I don't comment or review online. But I have to in this case. I run Dali Rubicon 6's on Hegel H390 in a 450 sq. ft. dedicated music room. I listen to classical, jazz, rock and trance. My local dealer has allowed me to test several subwoofers. I tested two Dali's, two Bowers & Wilkins, two SVS's and one Klipsch. I paid per hour for a very inclined expert to deliver and help set up each of these for testing. Since my local dealer does not carry REL, I ordered a T9X and an S/510 to compare. Both of the REL's were significantly better than the rest, despite the price premium on Bower's and Wilkins and one SVS I tested. The expert from the local dealer agreed. The speed and the control are stunning on both REL's. Both had plenty of head room. I was surprised at the clear difference in every aspect. We are constantly bombarded with advertising that can make every product appear to be the best. REL is one of the rare companies who's founder and experts have spent their lives designing and producing products that are pre-eminent. I actually kept the T9X rather than the S/510. It's that good! John Hunter is obviously doing this out of passion and his success is well deserved. Congratulations REL, and thank you!
Thank you for sharing, and we are glad to hear that you are enjoying the performance of the T/9x in your system! If you have any questions about your REL then feel free to let us know and we will be happy to assist.
I have a Marantz Cinema 60, the new REL T7X comes in tomorrow. I was concerned about using an RCA cable due to audio latency. So in my case (for now), Single Sub, 3.1 system (L,C,R). So would I be hooking up the Red to right positive terminal, Yellow to left positive terminal, then black to ground? Thank you!
Thank you for reaching out. With a single T/7x, you are correct that the red wire can be connected to the right channel speakers' positive output terminal, the yellow wire to the left channel speakers' positive output terminal, and the black wire to a ground screw or chassis screw. You could then also run a basic RCA cable from the .1/LFE input on the subwoofer to the subwoofer output jack on the Cinema 60.
I have a pair of PS Audio d700 monoblocks class D amps and am using the high level inputs of my Sumiko s9 subs. On the advice of PS Audio I ran a cable from the amps connecting to the amp output and chassis ground.
I like my stereo T-5i REL's (and their cables) and my main speakers (and their cables) equidistant from each other - FROM the amplifier. This way each of the 4 runs is super close to each other in length, and bass support arrives (in time) with my main speakers- especially with the fact I own Magneplanar 1.7i's, where speed is key and the panels demand a quicker response time, imo. I feel time alignment is important here. I WILL try this arrangement this weekend to see if a greater soundspace is created with these 2 in-stereo connected subs, FROM my speakers only. Great tip though... can't hurt to try.
@@backrack01 Worse- I found that there was too much loss from the Maggies to the REL's. Sensitivity issues? But I moved them closer which wasn't bad. I think connector size might be the issue- I used bananas for the subs into the maggies, but it could be a question of bare wire for the subs and different cabling for the speakers. Closer to the speaker is key at all times tho, at the plane of the speaker or right behind. Upgraded to T-7x's a pair.
Worse. I moved up to the 7x's, but perhaps it was a connector issue as subs were louder, but challenging the low sensitivity speakers for share of the sound. Key to have them close- mine are right behind. I could see with bare wires or a change of speaker cabling could change that outcome.
I am not sure if that is the right advice, the voltage drops at peaks when bass is the strongest, you want the sub to make up for those drops, hence I think its better wiring the high level in near the amp.
So in theory i can add 4 subwoofers to the surround s and rear surrounds by tapping the high level to each speakers. Then run them as a full range speakers? 7 subs sounds like a good idea. I love rel product
Three subwoofers is the minimum number to form a true REL-3D system, though some customers will use an individual subwoofer assigned to each main speaker channel. Meaning in a 5.1 surround system they would use five High Level connected subwoofers, or in a 7.2 surround system they would use seven High Level connected subwoofers. It's up to you how far you want to expand your system past the first three units (front left and right, center, and rear left and right).
If I’m going to use Marantz amp10 with bi-amping the two front speakers, would that make any difference if connecting high level cable? The wiring itself doesn’t change on the amplifier end (red and yellow to L+ from sub1 and to R+ from sub2). The only thing is on the marant there is a selector for normal, bi-amp and btl). So would having it on bi-amp mode affect the wiring for the rels?
Thank you for reaching out. If you are bi-amping your main loudspeakers with the Marantz Amp10 then the wiring of each REL's High Level cable will remain the same, except that we recommend connecting the High Level cable to the outputs on the amplifier which are feeding the low-frequency drivers for your main loudspeakers.
So so so true, tried it and changed everything. I’m talking about the connection of REL to the right speaker! One problem though, can’t find a way to connect to the terminals on my Magnepan .7. Somehow I made it to connect them but they are not tide. Also I think that the bass is coming more from the right speaker that the sub is connected to the right speaker, unless I’m wrong. Would appreciate your help John.
Thank you for reaching out. There are a handful of possible reasons for the output of the subwoofer to be easily localized, and typically making adjustments to the tuning and placement of the subwoofer can help to alleviate this. For assistance with tuning and connection of the subwoofer in your system, please feel free to write in to contactus@rel.net and we will be happy to assist.
Hi John there is a guy on another UA-cam channel that believes that high level connection proposed by REL is the wrong way to go. What is proposing is to add an external active crossover and split the frequencies between the main speakers and the subs. I just hooked up my High level connectors of my 2 Rel T9i directly to my speakers and I am very satisfied with the REL solution. Your thought please
Thank you for reaching out. As long as the High Level cable is connected correctly depending on the type of amplifier that you are using (Class A/B, Class D, etc.) then there will be no risk of damage to the subwoofer by connecting using the High Level input. In our experience using the High Level connection results in significantly improved performance from REL subwoofers, though our subs can also be connected using a more conventional RCA connection if you prefer.
Thank you for reaching out. When connecting using the High Level input there will be no wires making contact with more than one amplifier terminal at a time. One wire will connect directly to one positive binding post, a second wire to the other positive binding post, and a third wire connected to a ground point. As a result, as long as you practice a normal amount of caution then there will be no risk of shorting your amplifier by using the High Level input connection.
Great video. I’ve got a pair of REL’s running off a pair of monoblocs. I’ve gained some additional speaker wire and was going to bi-wire from each monobloc (which has the additional speaker output posts for bi-wiring) to the LF and HF binding posts on the speakers. In this configuration what is the best practice for connecting the three wires of the high level REL cable to the speaker binding posts? Many thanks, Lee.
Thank you for reaching out. If you will be bi-wiring your main loudspeakers from the same set of monoblock power amplifiers, rather than bi-amping the speakers, then your High Level connections for the pair of REL subwoofers will remain the same. Theoretically it would be best to connect the High Level cables to the set of output terminals that are powering the low-frequency drivers on your speakers, though realistically both sets of output terminals on the amp are sending the exact same signal to your speakers so you could connect the High Level cable to either and get the same result.
Not sure I understood the last part about connecting a single REL to the speaker terminals. John said that an extension cable would be necessary for the speaker further away from the REL but the video was showing that the red and yellow REL wires are twisted together and connected to the same speaker. Maybe the footage is referring to a stereo pair of RELs and showing how to connect 1 REL to 1 speaker? Since bass is usually not different between left and right channel, can’t I just use this connection method even if I only have 1 REL and avoid the extension cable to the other speaker?
The bass freq isn't always balanced LR equally in all recordings. And if you crossover into higher frequencies, say 100Hz, you'll likely have even more localized independent (stereo) information, hence the concept of a stereo pair of subs. I'm running my pair this way now, but would like to try dual mono as I'm battling room issues that may be solved by summing the signal to both subs. In the ideal world, it seems that a stereo pair are ideal, if you think of the subs as extensions to your mains, making them true full range speakers. As other videos have pointed out, there are recordings that have stereo bass, and there can also be spatial information conveyed in the lower freq, so could have sound stage benefits to running a LR sub pair. That's what I've picked up so far. I still need to measure my system and room with a mic, and determine if I'll continue with the stereo pair, or switch to dual mono. Additionally, I may eventually try minidsp for integrating the subs. This would mean bypassing the high level connection in favor of the LFE input, and then configure minidsp to set crossover, phase, and time delay to lock it in even tighter with my mains.
Thank you for reaching out. As you noted sub-bass content is often centered in the stereo mix, meaning that it is common between the right and left channel, and as a result it is possible to connect a single subwoofer to one of either the right or left channel speaker and still get good results. This is not the most ideal option, since you will be missing low-frequency from the other speaker channel and some recordings do have stereo separation in the low-frequency range, though it can be done if you are using a single subwoofer in your system. That being said, with a single subwoofer setup it is typically more ideal to connect the High Level cable to the output terminals on your amplifier, so that the sub can receive signal from both the right and left channels.
I wasn’t sure either. I have 2 T Zeros and each is wired to my front pair of MA Radius 90s which are fed by expensive Chord Rumour 2 cables. The wiring is as described on the REL site. The critical step was to tune each REL separately then when turning both on, reduce the volume by about 3 clicks. On the bass mono v stereo thing, I believe that all vinyl has mono bass below about 60hz. However, the master tapes do not. This is why CDs and MQA streaming appears to be more directional in bass. Big scale recordings using mics such as symphony or organ music shows this.
@@RELAcoustics I'm still confused. I just received a REL T/X5 this week and hooked it up to the back of my integrated amplifier. Is that the best way using a single subwoofer? If not, can you include a diagram how I can hook up my REL sub to both my speakers?
Agree with Guy and Alan's comment below. I'm still a bit confused. Some more explanation/diagram on how to actually connect the (dual) subwoofers would be helpful.
If you have bridged power amplifiers that provide a balanced differential output, why would that cause any damage? Maybe because the high level inputs to the subs have one side connected to ground.
With a traditional Class A/B amplifier the negative output terminal/binding post references to ground, which means that the the subwoofer can be grounded if needed through it's black High Level wire to the negative output terminal or the negative binding post on the main loudspeakers. With a balanced/differential amplifier, the negative output terminals carry a positive voltage rather than referencing to ground. This means that if you connect the High Level cable to the binding posts on your speaker and experience a ground hum from the subwoofer there will be no way to achieve a ground connection through the High Level cable's black wire. As a result, with balanced/differential or Class D amplifiers it is typically best to connect the High Level cable to the amplifier's output terminals, so that a ground connection can be achieved if needed.
@@RELAcoustics Obviously if the power amp is placed near the speakers you could reach a chassis screw or ground post no? Or wire your own speakon connector which is easy to do.
@@ronaldwanders Speakon 4 way connector is the easiest thing to wire. I'd check the rel cable but its something like +1 to left channel hot, +2 to right channel hot and -1 to ground. -2 isn't used.
@@2002holland You are correct regarding the wiring for a REL High Level cable. In addition, if the system's power amp is placed near to the main loudspeakers then you can certainly connect the black wire to a ground screw on the power amp while connecting the red and yellow wires to the binding posts on the main loudspeakers.
If you are using a single REL subwoofer in a system with monoblock power amplifiers, then we recommend connecting the subwoofer to your preamp using it's Low Level input. We do not recommend connecting a single subwoofer to two monoblock power amplifiers at the same time, since this can result in significant ground hums and in a worst case can damage the subwoofer and/or the amplifier.
@@RELAcoustics I have a croft preamp which has the usual rca line level inputs and 1 pair of rca out puts to the power amps. Are you suggesting to split the rca output and have 1 rca cable to amp and the the other to the Sub?
I have a REL and have it connected up as advised. Sorry but it is not at all clear what is being described. A diagram would be most helpful in clarifying the upgrade.
Hi, I want to use the 3D subwoofer with my Kef R3 in a home theatre, My Q is : Would the Subwoofer play all the Hz of my speaker? or would it just play between 80hz - 20hz ( of course i would be using the LFE input also for the LFE signal ). Thank you,
Thank you for reaching out. When using the High Level input on a REL the subwoofer will receive a full-range signal from your amplifier, though you will then adjust it's crossover control so that it only produces output below where your main loudspeakers are naturally rolling off in their bass response in your room, ideally with as minimal overlap as possible.
I'm looking for information on how to connect two RELs to two stereo systems. None of them have a SUB input. I connected one with High Level and the other with Low Lewel to PreOut (Y RCA). Unfortunately, in the set with the LL connection I have humming noise in the speakers. Is there a way to connect one pair of RELs to two pairs speakers via HL?
Thank you for reaching out. In a 2-channel system, we recommend connecting both subwoofers in stereo using their High Level inputs, with one subwoofer connected to support right channel output and the second connected to support left channel output. For connection instructions specific to your application, please write in to contactus@rel.net and our team will be happy assist.
We did not understand each other. I have two stereo systems, i.e. two amplifiers, each with a separate pair of speakers. Yesterday I also sent this question by e-mail.
So just want to try one T9X before committing to 2 and need to connect it to speaker terminals on back of speakers. Am I correct in assuming that 1 positive Rel wire goes to each positive terminal on back of speakers and the ground wire can go to either speaker? I want to try it on a cheap Sony 2 channel STR- DH190 and a Denon X6700H. I understand how to connect to the Denon but it is not possible to connect to the Sony's outputs due to placement etc. Need to connect 1 Rel high level connector to 2 speakers via the speakers binding posts on the speakers themselves.
Thank you for reaching out. The Sony STR-DH190 is a Class A/B amplifier, which means that the black wire of the High Level cable can be connected to a negative binding post on one of either the left channel or right channel speaker. The red wire of the High Level cable will then connect to the positive binding post on the right channel speaker, and the yellow wire will connect to the positive binding post on the left channel speaker. With a single subwoofer, it will also likely be necessary to trim-back some of the black outer sheathing on the cable so that the individual wires can reach both your left channel and right channel speaker.
If you are connecting the powered sub to the power amp, aren’t you double powering the sub? Does this add load to the amp so that there is less capacity for the LR main speakers?
Thank you for reaching out. The High Level input on a REL subwoofer is designed with a significantly high impedance (approximately 150,000 ohms) which allows it to connect to the main speaker output terminals on an amplifier without placing any current load on the amp or drawing any power away from the main loudspeakers.
@@luke.boxall Thanks Luke I wasn’t sure if there were some kind of earthing problem between the name amplifiers and the REL subwoofers. I noticed that there is a special REL lead designed for that purpose, very expensive too, and I wondered why it was necessary
@@michaelwilliams4086 yes i saw that myself. DO NOT BUY IT! I have asked naim & REL and that lead is not approved by either company and does not solve the problem caused by connecting at the amp end. I have stripped back the high level cable and connected to amp ground. Both red and yellow and connected to right and left speakers respectivey - works perfectly
I have powered speakers that I would like to add a sub to but they only have an XLR input from the pre amp, is it possible to connect the prefered Hi input connection or am I stuck with an RCA from the amplitier. Speakers ATC SMC19As don't have a sub output.
Thank you for reaching out. Since you are using active/powered speakers in this system it will be best to connect a REL subwoofer using it's Low Level input to open outputs on your system's preamp. In order to use the High Level input on a REL subwoofer it will be necessary to have passive speakers with a separate amplifier powering them, so that the High Level cable can be connected to the amplifier's output terminals.
I have a StereoBox DS3, a Class-D amp from Pro-Ject and a stereo pair of Speaker 5 S2. I would like to connect a TX 5 subwoofer direct on the speakers. Can i cut off the black hose to connect red and yellow direct on the speakers (2 meters away from each other)? If it is possible, where i have to connect the black cable to ground it? Alter question is, what is the best crossover setting for the Pro-Ject speakers 5 s2? Thanx a lot
Since your StereoBox DS3 is a Class D amplifier, it will be best to connect the High Level cable to the binding posts on the amplifier itself, rather than connecting to the binding posts on the speakers. This way you will be able to achieve an electrical ground reference for the subwoofer, by connecting the black High Level wire to the amplifier's ground thumb screw.
Can you please do a video instruction on how to connect "high level" to Lyngdorf TDAI-3400 in the balanced differential setup? I have Lyngdorf stating in their manual to "NEVER" connect to a high level connection from their amp to the likes of REL S/812, yet REL is saying to me that it's ok to do this... So I would like to know "HOW" to do this whilst not voiding my warranty at Lyngdorf if I do connect it according to REL... Which is stated to connect via standard stereo main speakers, do Room Perfect correction, then connect your 2 x REL subs high level from binding posts to each high level in on the RELS (but do NOT connect the "Black" wire to the negative binding post for Lyngdorf or balanced differential amps, connect the "Black" wire to a chassis screw on the amp unit from each sub and connect the other wires as per normal... Or connect the coloured wires as normal leaving the "Black" wire off and connecting 2 standard RCA cables coming from each left and right's sub .1/LFE channel to an open RCA port on the back of the Lyngdorf unit), then you tune each sub by ear using the crossovers on the back of the subs (not the Lyngdorf software, that only would control the stereo speaker pair and subs would be turned "off" in Lyngdorf Room Perfect setup). Can you please show use a walkthrough of this setup with diagrams that is actually "Approved" by Lyngdorf so we know we're not going to void warranties etc...
Thank you for reaching out. Unfortunately we do not have a video about specifically connecting High Level to Lyngdorf balanced/differential amplifiers, though the instructions that you described are correct for connecting High Level to this type of amplifier. Specifically, as long as you do not connect the black wire of the High Level cable to a negative speaker terminal on the amplifier then there will be no risk of damaging the REL subwoofer or the Lyngdorf amplifier. For more information, here is a link to our video about connecting High Level to balanced/differential amplifiers: ua-cam.com/video/jDoY5sVT0XQ/v-deo.html We can look into collaborating with Lyngdorf to provide High Level connection instructions specific to their amplifiers, though as you noted Lyngdorf generally recommends against connecting High Level since it is possible to damage the amp or subwoofer if you do not follow the correct connection instructions. However, as long as you follow the connections outlined in the above link then there will be no risk of damage to the sub or the amplifier. If in doubt, you can always revert to using the Low Level input on your S/812, which would connect to the RCA preamp outputs on the TDAI-3400.
@@RELAcoustics is the XLR on the back of the REL 812 considered low level also? Could you connect from Lyngdorfs analog xlr out to the REL XLR low level input also if you want to use the subs crossovers? There wouldn't be any risk of damaging the amp or rel if connecting via XLR out to xlr in on subs is there because it's low level?
@@cr5721 The XLR inputs and outputs on the S/812 are for the .1/LFE channel, and bypass the subwoofer's crossover filter circuit. It is possible to connect from the subwoofer output on your Lyngdorf to the XLR .1/LFE input on the S/812, but only if a low-pass crossover can be set within the Lyngdorf to control the upper frequency response of the subwoofer. If not, then it will be best to connect to the RCA Low Level inputs on the S/812, or connect using the High Level input.
If you are using a Class A/B amplifier in your system then the black High Level wire can be connected to the negative binding post on either the left or right channel speaker. However, for a single subwoofer setup it is typically easier to connect the High Level cable to the output terminals on your amplifier, rather than to the speakers, so that you can more easily connect to both the left and right stereo channels.
I have a Technics SU G 700M 2 integrated amp. It is a Digital amp. When I connect the T9x subwoofer will the high level connection be the same as integrated amps that are not digital?
Thank you for reaching out. Since your Technics SU G700M2 is a Class D amplifier, special care must be taken when connecting the High Level cable for a REL subwoofer to it. For more information, here is a link to our video on connecting High Level to Class D amplifiers: ua-cam.com/video/3F5WTOu60hE/v-deo.html
This can work fine in some cases, though it will result in the subwoofer only receiving signal from one of either the left or right channel, rather than it receiving both left channel and right channel signal.
Thank you for reaching out. In most cases connecting the High Level cable to your main loudspeakers' binding posts rather than to the amplifier's output terminals will not specifically solve hum or interference. If you are experiencing hum or interference from your REL then at your earliest convenience please write in to contactus@rel.net and our team will be happy to assist as needed.
Hi I am not sure if I am asking the correct question but I will try the best. I have a pair of Stellar M1200 mono blocks and Martin Logan 60xt . In this video you explained that we could connect a single sub to the speakers instead of the amplifier. 1. So I should be able to connect the single REL sub to the Martin Logan Speakers provided that I use an extension to the speaker that further from the sub? 2. What is the difference between connecting it straight to to the mono blocks rather than the speakers, because the speakers are still getting the output from the mono blocks? 3. If the mono blocks have an grounding screw bu design should I be able to connect the sub direct to mono blocks ? .......................... Thanks in advance
Thank you for reaching out. Since you are using monoblock power amplifiers in this system it will be necessary to use a stereo pair of subwoofers in order to take advantage of the High Level input. In our experience connecting a single subwoofer High Level to two monoblocks at the same time will often result in a significant ground loop hum that can be near-impossible to eliminate, and in a worst-case-scenario can result in damage to the subwoofer and/or the amplifier. In addition, since your PS Audio M1200 monoblocks are class D amplifiers it will be best to connect the High Level cables for a pair of REL subwoofers to the output terminals on the amplifiers, rather than to the speaker's binding posts, so that a ground connection can be achieved if needed. If it is only possible to add a single subwoofer to your system at this time then we recommend connecting it to open outputs on your system's preamp, using the Low Level input on the REL.
Thank you very much for the response. Looks like I will have to use the Pre Amp then. When using the Preamp will I loose a lot of the qualities that are being passed to speakers? My Pre amp has an output that says "Passive output volume controlled. This can be used to connect an Subwoofer". If I connect the low level cable to one of the channel I will be getting mono signal from one of the channels. Is there a recommendation on which channel it should be Left or Right? Not sure if this is a silly question . Can I use stereo to mono converter and use that to pass the signal to subwoofer in that way I can the signal s from both the channels. Will this increase the subwoofer to produce better sound than using one connection from one of the channels ? Apologies for asking more questions.
@@senerathw Thank you for your response. Using the High Level input does offer improved performance from our subwoofers when possible to do so, though in your case it will be best to connect your REL using it's Low Level input to your preamp, so that it can safely receive both left channel and right channel signal. If your preamp has a mono subwoofer output jack, then you can use a single standard RCA-to-RCA cable for connecting to the REL's Low Level input. If your preamp has stereo outputs, then you can use an RCA y-cable so that both of these outputs can be connected in to the subwoofer's Low Level input.
How do you compensate for the delays of the electronics in the REL? This gonna be a filter, and then there’s can be an amplifier. I heard that older RELs have something like 23 ms of delay. I heard that new RELs have something closer to 13 ms of delay. So if you were to have a processor that can delay your main speakers from the sub pre-out, then you can truly time align your subwoofer and your mains. Hooking the subwoofer up to the high-level means that you will always have a small delay in the system, and they won’t actually be in phase. It may work fine for sustained low notes, but I don’t see how it helps the transients.
Thank you for watching. All current REL subwoofer models have at most 8ms of filter delay, with our Reference models having only 4ms of filter delay. This delay is so short that it is inaudible and imperceptible to the human ear, which allows the subwoofer to be time aligned with the main loudspeakers when using either the High Level or line level inputs.
My speakers sound best on the 4ohm tap from my valve amplifier, can I connect my two REL subs to the speaker binding posts or must they only be connected via the amplifier's 8ohm taps?
Thank you for reaching out. To get the best possible performance from the High Level input on a REL subwoofer we recommend connecting the red and yellow wires of the High Level cable to the 8 ohm positive output terminals on the amplifier, even if your main loudspeakers are being connected to the 4 ohm output terminals.
I just purchased a REL HT1003 MK11 subwoofer. I have a Parasound 5 channel power amplifier & a Marantz pramp/processor. Both these units have balanced outputs that I make use of. I am not sure if it is safe to use the REL Subwoofer cable with my preamp/ processor & power amplifier. Can anyone give me a definitive answer? I certainly don't want to damage my equipment. Thanks So Much!
Thank you for reaching out. Since the HT/1003 Mk.II exclusively features RCA line level inputs, it should be connected to the subwoofer output jack on your Marantz pre-processor. If your processor exclusively features XLR outputs, then it will be necessary to use an XLR-to-RCA converter or cable so that the XLR subwoofer output on the processor can feed into the RCA input on the subwoofer.
I have a same brand amplifiers. One integrated and one just a power amp. I can connect the two to bridge in mono. The rels do crazy things when connected to high level this way. Trust me.. I tried everything. I think it's in the design of the amplifiers when in mono.. Anyways.. is connecting to speakers a good idea? My speakers only have one pair of binding post. The amplifiers are a/b... unbalanced. IOTAVX stack.
Thank you for reaching out. When using two stereo amplifiers in their bridged monoblock configuration, we recommend treating them as balanced/differential amplifiers in terms of connecting the High Level cables for REL subwoofers. As a result, it will be best to connect the High Level cables to the amplifiers rather than to the binding posts on your main loudspeakers. In addition, in this case the black wires of the High Level cables should not be connected to a negative speaker terminal, and instead should be connected to a chassis screw on the corresponding amplifier. If you have any additional questions about connecting REL subwoofers in your system then at your earliest convenience please write in to contactus@rel.net and our team will be happy to assist.
What about if you have a tube amp? Is it okay to connect high level to the speaker in that case, and is it an upgrade vs connecting direct to the tube amp itself?
Thank you for reaching out. It is possible to connect the High Level cable for your REL subwoofer to the binding posts on your speaker, even if you are using a tube amplifier, though when doing so it will be important to make sure that: a). The negative speaker output terminals on your amplifier reference to electrical ground. b). The positive leads of your main speaker wire is connected to the 8 ohm positive output terminals on the amplifier. If these conditions are met then you can connect your High Level cables to the binding posts on the speakers themselves. If you have any additional questions about connecting High Level in your system then feel free to write in to contactus@rel.net and we will be happy to assist.
@@RELAcoustics Thanks for the response! Now what if it is a fully balanced tube amp where it does not meet condition a? How can I connect the REL to the speaker terminals in that case or is this not possible with that kind of amplifier? And if it is not possible to connect directly to the speaker, how would I connect them to the fully balanced tube amps? What is the recommended method for this?
@@shawnmathew825 Thank you for your response. If your tube amplifier is fully-balanced then we recommend connecting the High Level cable to the output terminals on the amplifier itself, rather than to the binding posts on your main loudspeakers. By connecting to the amplifier you will be able to more easily achieve a ground connection (through the black wire of the High Level cable) if needed, since a stable ground reference will not be possible on the speaker end of the system. For High Level connection instructions specific to your system, please provide the model of amplifier that you are using, and the number of subwoofers that you plan on using, and we will be happy to assist.
@@RELAcoustics Hi, if I am using this method to connect to the speaker terminals directly with tube amps, do I need connect my speaker cables to the 4-8 ohm tap? I read somewhere that the REL should be connected to the 4-8 tap when connecting to a tube amp, so I was wondering if I need to connect my speaker cables to that tap to get that same output in this instance since I am connecting to the speaker directly. P.S. my amp as 1-2, 2-4, 4-8 taps on the back.
@@shawnmathew825 Thank you for reaching out. You are correct that the positive (red and yellow) leads of the REL's High Level cable should be connected to the 8 ohm positive output terminals on the tube amplifier. Your main speaker wire can then be connected to the output terminals that match their impedance, even if these are different output terminals from the ones that the High Level cable is connected to.
Will connecting directly to the speaker impact crossover? Since now the amplifier is just sending the same signal to the speaker and sub so doesn’t the speaker just do the same frequency as the sub? Ex if I set my crossover at around 60hz, the sub will do below 60hz but the speaker will still do below 60hz as well? Wherein if the subs are connected to the amplifier it follows the actual crossover and the speakers wont play under 60hz? I’m quite new to this and would like to understand the difference between connecting directly to the amp instead.
Thank you for reaching out. REL subwoofers do not feature a high-pass filtered output, which means that the crossover filter on the subwoofer will only impact it's own output and will not impact the output or frequency response of your main loudspeakers. This will be the case whether you connect the High Level cable to your amplifiers output terminals or to the binding posts on your main loudspeakers. To get the best possible performance, we recommend setting the Crossover on your REL to below where your main loudspeakers naturally roll-off in their low-frequency extension in your room, with as minimal overlap as possible. If you have additional questions about subwoofer tuning in your system then feel free to write in to contactus@rel.net and we will be happy to assist.
@@RELAcoustics thank you for your response. I understand now. Just a follow up question if the speaker has 4 binding post for bi-wire what would be your recommendation on how to connect the Hi-level cables to it?
@@_superjab_ If you are bi-wiring or bi-amping your speakers, then we would recommend connecting the High Level cable to the binding posts which are driving your speakers' low-frequency drivers. If you are not bi-wiring or bi-amping, and instead have jumpers connected on your speakers' binding post, then you can connect the High Level wires to either the upper or lower binding posts.
Just bought 2 T9/i's and have them next to my front left & right speakers. Does Rel sell short Nutrix (sp?) cables, say 3 feet, I can use to connect the T9's to the speakers so I don't have to shorten the cables that came with my T9's?
Thank you for reaching out, and for supporting REL Acoustics. Unfortunately we do not have shorter lengths of the standard High Level cable available to purchase, though the High Level cable that comes supplied with your T/9i subwoofers can be trimmed to a shorter length if you wish. We do have different lengths available for the upgrade Bassline Blue High Level cable, and this version is available at 3 meter, 6 meter, and 10 meter lengths.
Thanks!! I just looked at the baselines & on REL's site. The baseline comes with 3 spade connectors. Can REL supply them with just 2 spades for those of us who are using dual REL's?
@@LS-ti6jo Unfortunately we are not able to offer custom lengths or termination options for the Bassline Blue cables. If you are using a pair of RELs, then you can simply place one spade on top of the other and then tighten down the binding post onto both, or re-terminate the cable so that both the red and yellow wires feed into a single spade.
You can connect the High Level cable for older ST III REL models to the binding posts on a speaker, though this is only possible when powering the speakers using a Class A/B amplifier. If you are using a Class D or Balanced/Differential amplifier then it will be best to connect the High Level cable to the output terminals on the amplifier itself.
Thank you for reaching out. Here is a link to an article from our website which describes High Level connection to balanced/differential power amplifiers: rel.net/blog/2015-07-23/how-to/how-to-connect-a-rel-to-a-balanced-amp/
This may have already been asked but I have two subs, and want to set them up as a 'stereo pair' with one sub behind the left speaker and the other sub behind the right speaker. For cable length reasons I want to attach them to the speaker terminals rather than the amplifier terminals (high level, obviously). Am I correct that the left sub connects to the left speaker and the right sub to the right speaker? At each speaker, the twisted red+yellow wires attach to the positive speaker terminal, and the black goes to the negative? The video above shows just one sub, hence my question. Thanks (it's a regular class A/B amp, for stereo listening, not AV)
Thank you for reaching out. Since you are using a Class A/B amplifier in this system, it is possible to connect the High Level cables for your REL subwoofers to the binding posts on the corresponding main loudspeaker, rather than connecting to the amplifier's output terminals. This will result in the right channel subwoofer being connected to the right channel speaker, and the left channel subwoofer being connected to the left channel speaker. With both subs, twist together the red and yellow wires and connect to the positive binding post on the corresponding speaker, and connect the black wire to the corresponding negative terminal.
@@RELAcoustics Hi, I have speaker wires with speakON NL2FX ends which I think were made for a Benchmark amp. Could I use these to connect my Rel amps to the speaker bindings without issue, or will it not work because there are not technically 3 wires?
@@claytonwinters9797 Since these SpeakOn-terminated cables use 2-conductor wire, they will likely not perform correctly if used for sending signal to a REL subwoofer. The High Level input for REL subwoofers uses a three-conductor cable.
I have a NAD C368 Class D amp, what would be the best method of connecting my REL subs up for stereo listening, do I apply the same method as adamhindle9215? Thanks.
Hi REL, I want to connect a pair of S510s to an active pair of ATC SCM 40A speakers driven by a Benchmark HPA4 preamplifier. What sort of connection do you advise to use?
Thank you for contacting us. From what I can see online, it appears that your Benchmark HPA4 preamp has both XLR and RCA pre-outs available. As a result, we recommend connecting from the XLR pre-outs to the inputs on your ATC SCM 40A speakers, and then connecting from the RCA pre-outs to the Low Level input on each of the S/510 subwoofers. We hope that this helps, but if you have any additional questions then feel free to let us know and we will be happy to assist.
@@RELAcoustics Many thanks for your quick reply. I understand that connecting to the low-level inputs of the RELs is the only way (since the ATC SCM 40A does not have a banana, spade or bare wire input, only a XLR input). But the standing problem is that the Benchmark HPA4 only has one pair of RCA pre-outs. How can I connect a pair of REL S/510 then?
@@OrlandoBisacchiCoelho He said to try the XLR outputs of the pre to the active ATC speakers and then use the high level RCA's of the HPA4 to the subs. The REL subs don't have an XLR output unless the S/510's are different... I own an HPA4 for over a year now and this should be real simple. But, you will not be enjoying the time-alignment that John is speaking above here, because active speakers without secondary outputs don't have provisions to do so. You'll have to make do with what the ATC speakers provide, which btw, is great as those speakers are wonderful.
@@TheGlotz69 and @REL Acoustics thanks for your reply. The problem is not how to connect the Benchmark HPA4 to the ATC SCM 40A pair. The question is how to connect any signal to the *pair* of REL S510s. The HPA4 has one pair (L/R) of (unbalanced) RCA outputs. Is the REL low-level input mono? *If* that is the case I can connect the single RCA Left output of the HPA4 to the RCA input of the LEFT S510 and connect the single RCA Right output of the HPA4 to the RCA input of the RIGHT S510. Will that work and be safe?
@@OrlandoBisacchiCoelho This connection can be made using a pair of RCA cables, with one cable ran from the right channel RCA pre-out on your Benchmark HPA4 to one of the Low Level input jacks on the right channel S/510, and the second cable ran from the left channel RCA pre-out to one of the Low Level input jacks on the left channel S/510. The XLR pre-outs on the HPA4 will then be used for connecting to your ATC active speakers.
Thank you for reaching out. With all of our High Level compatible subwoofers it is possible to connect High Level to a power amplifier while simultaneously connecting using the .1/LFE input to the sub-out on an AV receiver.
@@RELAcoustics okay thanks. Yesterday it started humming. I disconnected the rca from the lfe input and the high level and the humming continues. If I disconnect the Neutrik from the rel if it disappears when I reconnect it it appears even though nothing is connected to the other end. I reconnected everything again, turn on the amp, turn on the rel and all good. I turn off the amp and the noise comes back. I turn it on and off again and it hasn't done it anymore. What can be?
@@Cloud13. Thank you for your response, and we are sorry to hear about the hum which you are experiencing. When you have a chance, please write in to contactus@rel.net with a brief description of your system and the hum you're experiencing and our service team will be happy to assist with troubleshooting and providing resolution options as needed.
Hi so I have a rel stygian , it has only high level in, but my onkyo tx be 545 only has rca outputs for sub and the 7 channel Audio out, how would I connect this to my amp ? I’m having a nightmare
Thank you for reaching out. Since your REL Stygian exclusively features a High Level input, we recommend connecting it to the front left and front right speaker output terminals on your Onkyo AVR. These will be the exact same output terminals on the receiver as your main speaker wire is connected to.
@@RELAcoustics hi thanks for the quick reply , my problem is I’m using 7 speaker set up allready so all the terminals already have wires hooked up, can I just connect it to one that’s being being used and it will share it or what? As I know my onkyo is putting out around 100 watts per channel so will it not effect my front right speakers if I do that?
@@Uey233 The High Level cable should ideally be connected to the exact same front left and front right channel speaker output terminals on the amplifier as your main speaker wire is connected to, meaning that these output terminals will be shared with both the High Level cable and your main speaker wire. Since the Stygian was one of the first REL subwoofer models produced, it used an XLR plug for it's High Level cable. Soon after the Stygian this was changed to the NL4/SpeakOn plug found on all current REL models, though otherwise the High Level connections are exactly the same.
@@RELAcoustics brilliant thanks for the help, is it worth getting a cable for my stygian I’ve seen a xlr to single rca , could i use that and then hook up to the subwoofer line out on my onkyo amp rather than get a xlr high level ?
Thank you for reaching out. REL subwoofers can be connected to Naim amplifiers, though the best method for doing so will depend on the specific model of Naim amplifier, model of subwoofer, and the number of subwoofers that you are using in the system. When you have a chance, please write in to contactus@rel.net and we will be happy to assist with connection instructions specific to your system.
Hi.. I'm using a naim 5si.. proac anniversary tablette.. would like to know how to connect a single REL sub to my system.. thanks so much! Sam from Singapore
Thank you for reaching out. Since your Krell KSA-100S is a Class A amplifier, the negative speaker terminals on the amp do reference to ground and as a result the black wire of the High Level cable can be connected either to one of these negative speaker terminals or to a negative binding post on your main loudspeakers. If you are using a single subwoofer then we recommend connecting it's High Level cable to the output terminals on the amp itself so that it can more easily draw signal from both the left and right channels. If you are using a pair of subwoofers, then you have the option of either connecting the High Level cable to the amplifier's output terminals or to the binding posts on the corresponding main loudspeaker.
@@urbantone Thank you for your response, and yes these connections are correct. If anything else comes up or if you have any additional questions then feel free to let us know and we will be happy to assist.
Thank you for reaching out. It is possible to connect a REL subwoofer to the Naim NAP 300DR using the High Level input, though due to the output stage design of this amp it is not possible to make this connection using the standard High Level cable which is supplied with the subwoofer. Instead, we recommend using the Naim version of our Bassline Blue cable, which is built with additional resistance added to the cable which allows it to safely be connected directly to the NAP 300DR's output terminals. Alternatively, you could use the stock High Level cable and connect to the binding posts on the main loudspeakers, rather than to the amplifier's output terminals, though this is usually easiest when using a stereo pair of subwoofers. For more information on connecting High Level to Naim amplifiers, feel free to write in to contactus@rel.net and we will be happy to assist.
@@hawkmoon369 The following connections can be used when wiring a stereo pair of S/812 to your Naim NAP-300R using the Naim Bassline Blue cable: - Connect both the red and yellow wires of the right channel subwoofer's High Level cable to the right channel positive output terminal on the amplifier. - Connect the black wire of the right channel subwoofer's High Level cable to the right channel negative output terminal. - Connect both the red and yellow wires of the left channel subwoofer's High Level cable to the left channel positive output terminal on the amplifier. - Connect the black wire of the left channel subwoofer's High Level cable to the left channel negative output terminal.
So in regard to the caveat you mention with the balanced differential operation….. I have an Audio research ref 75se and a stereo pair of S510’s. Am I in the “no-go” camp of not being able to try this setup of connecting to the speakers instead? Thanks.
@@ronaldwanders thanks for your reply. 🙂I am doing just this at the moment. What I’m trying to figure out is if I can try to connect the subs at the speakers, like John is describing in the posted video, with my given equipment. Thus, the caveat mentioned.
Thank you for reaching out. Unfortunately, with the Audio Research REF-75se we do not recommend connecting the High Level cables to the binding posts on your main loudspeakers. With this amplifier it will be best to connect the High Level cable to the amplifier's output terminals.
I don't comment or review online. But I have to in this case. I run Dali Rubicon 6's on Hegel H390 in a 450 sq. ft. dedicated music room. I listen to classical, jazz, rock and trance. My local dealer has allowed me to test several subwoofers. I tested two Dali's, two Bowers & Wilkins, two SVS's and one Klipsch. I paid per hour for a very inclined expert to deliver and help set up each of these for testing. Since my local dealer does not carry REL, I ordered a T9X and an S/510 to compare. Both of the REL's were significantly better than the rest, despite the price premium on Bower's and Wilkins and one SVS I tested. The expert from the local dealer agreed. The speed and the control are stunning on both REL's. Both had plenty of head room. I was surprised at the clear difference in every aspect. We are constantly bombarded with advertising that can make every product appear to be the best. REL is one of the rare companies who's founder and experts have spent their lives designing and producing products that are pre-eminent. I actually kept the T9X rather than the S/510. It's that good! John Hunter is obviously doing this out of passion and his success is well deserved. Congratulations REL, and thank you!
Thank you for sharing, and we are glad to hear that you are enjoying the performance of the T/9x in your system! If you have any questions about your REL then feel free to let us know and we will be happy to assist.
Always appreciate wisdom from John
I have a Marantz Cinema 60, the new REL T7X comes in tomorrow. I was concerned about using an RCA cable due to audio latency. So in my case (for now), Single Sub, 3.1 system (L,C,R). So would I be hooking up the Red to right positive terminal, Yellow to left positive terminal, then black to ground? Thank you!
Thank you for reaching out. With a single T/7x, you are correct that the red wire can be connected to the right channel speakers' positive output terminal, the yellow wire to the left channel speakers' positive output terminal, and the black wire to a ground screw or chassis screw. You could then also run a basic RCA cable from the .1/LFE input on the subwoofer to the subwoofer output jack on the Cinema 60.
I have a pair of PS Audio d700 monoblocks class D amps and am using the high level inputs of my Sumiko s9 subs. On the advice of PS Audio I ran a cable from the amps connecting to the amp output and chassis ground.
I like my stereo T-5i REL's (and their cables) and my main speakers (and their cables) equidistant from each other - FROM the amplifier. This way each of the 4 runs is super close to each other in length, and bass support arrives (in time) with my main speakers- especially with the fact I own Magneplanar 1.7i's, where speed is key and the panels demand a quicker response time, imo. I feel time alignment is important here. I WILL try this arrangement this weekend to see if a greater soundspace is created with these 2 in-stereo connected subs, FROM my speakers only. Great tip though... can't hurt to try.
How did it go for u?
How did you find it? I connected my twin T9/x subs and it works very well indeed!
@@backrack01 Worse- I found that there was too much loss from the Maggies to the REL's. Sensitivity issues? But I moved them closer which wasn't bad. I think connector size might be the issue- I used bananas for the subs into the maggies, but it could be a question of bare wire for the subs and different cabling for the speakers. Closer to the speaker is key at all times tho, at the plane of the speaker or right behind. Upgraded to T-7x's a pair.
Worse. I moved up to the 7x's, but perhaps it was a connector issue as subs were louder, but challenging the low sensitivity speakers for share of the sound. Key to have them close- mine are right behind. I could see with bare wires or a change of speaker cabling could change that outcome.
I am not sure if that is the right advice, the voltage drops at peaks when bass is the strongest, you want the sub to make up for those drops, hence I think its better wiring the high level in near the amp.
So in theory i can add 4 subwoofers to the surround s and rear surrounds by tapping the high level to each speakers. Then run them as a full range speakers? 7 subs sounds like a good idea. I love rel product
Three subwoofers is the minimum number to form a true REL-3D system, though some customers will use an individual subwoofer assigned to each main speaker channel. Meaning in a 5.1 surround system they would use five High Level connected subwoofers, or in a 7.2 surround system they would use seven High Level connected subwoofers. It's up to you how far you want to expand your system past the first three units (front left and right, center, and rear left and right).
If I’m going to use Marantz amp10 with bi-amping the two front speakers, would that make any difference if connecting high level cable? The wiring itself doesn’t change on the amplifier end (red and yellow to L+ from sub1 and to R+ from sub2). The only thing is on the marant there is a selector for normal, bi-amp and btl). So would having it on bi-amp mode affect the wiring for the rels?
Thank you for reaching out. If you are bi-amping your main loudspeakers with the Marantz Amp10 then the wiring of each REL's High Level cable will remain the same, except that we recommend connecting the High Level cable to the outputs on the amplifier which are feeding the low-frequency drivers for your main loudspeakers.
So so so true, tried it and changed everything.
I’m talking about the connection of REL to the right speaker!
One problem though, can’t find a way to connect to the terminals on my Magnepan .7.
Somehow I made it to connect them but they are not tide.
Also I think that the bass is coming more from the right speaker that the sub is connected to the right speaker, unless I’m wrong.
Would appreciate your help John.
Thank you for reaching out. There are a handful of possible reasons for the output of the subwoofer to be easily localized, and typically making adjustments to the tuning and placement of the subwoofer can help to alleviate this.
For assistance with tuning and connection of the subwoofer in your system, please feel free to write in to contactus@rel.net and we will be happy to assist.
@@RELAcoustics many thanks guys
I have my 2 quake 100 attached to my system and with them on its a "WOW" what a difference and when they are off "OH" something missing top job
Hi John there is a guy on another UA-cam channel that believes that high level connection proposed by REL is the wrong way to go. What is proposing is to add an external active crossover and split the frequencies between the main speakers and the subs. I just hooked up my High level connectors of my 2 Rel T9i directly to my speakers and I am very satisfied with the REL solution. Your thought please
Thank you for reaching out. As long as the High Level cable is connected correctly depending on the type of amplifier that you are using (Class A/B, Class D, etc.) then there will be no risk of damage to the subwoofer by connecting using the High Level input. In our experience using the High Level connection results in significantly improved performance from REL subwoofers, though our subs can also be connected using a more conventional RCA connection if you prefer.
I don't have the best speaker cables so I'm gonna wait on this one LOL
It really works utub! Try it and you’ll see :)
Don't you short out the amplify if you're running both channels and connected to one terminal both wireless are touching
Thank you for reaching out. When connecting using the High Level input there will be no wires making contact with more than one amplifier terminal at a time. One wire will connect directly to one positive binding post, a second wire to the other positive binding post, and a third wire connected to a ground point. As a result, as long as you practice a normal amount of caution then there will be no risk of shorting your amplifier by using the High Level input connection.
Great video. I’ve got a pair of REL’s running off a pair of monoblocs. I’ve gained some additional speaker wire and was going to bi-wire from each monobloc (which has the additional speaker output posts for bi-wiring) to the LF and HF binding posts on the speakers. In this configuration what is the best practice for connecting the three wires of the high level REL cable to the speaker binding posts? Many thanks, Lee.
Thank you for reaching out. If you will be bi-wiring your main loudspeakers from the same set of monoblock power amplifiers, rather than bi-amping the speakers, then your High Level connections for the pair of REL subwoofers will remain the same. Theoretically it would be best to connect the High Level cables to the set of output terminals that are powering the low-frequency drivers on your speakers, though realistically both sets of output terminals on the amp are sending the exact same signal to your speakers so you could connect the High Level cable to either and get the same result.
Not sure I understood the last part about connecting a single REL to the speaker terminals. John said that an extension cable would be necessary for the speaker further away from the REL but the video was showing that the red and yellow REL wires are twisted together and connected to the same speaker. Maybe the footage is referring to a stereo pair of RELs and showing how to connect 1 REL to 1 speaker?
Since bass is usually not different between left and right channel, can’t I just use this connection method even if I only have 1 REL and avoid the extension cable to the other speaker?
The bass freq isn't always balanced LR equally in all recordings. And if you crossover into higher frequencies, say 100Hz, you'll likely have even more localized independent (stereo) information, hence the concept of a stereo pair of subs.
I'm running my pair this way now, but would like to try dual mono as I'm battling room issues that may be solved by summing the signal to both subs.
In the ideal world, it seems that a stereo pair are ideal, if you think of the subs as extensions to your mains, making them true full range speakers.
As other videos have pointed out, there are recordings that have stereo bass, and there can also be spatial information conveyed in the lower freq, so could have sound stage benefits to running a LR sub pair.
That's what I've picked up so far. I still need to measure my system and room with a mic, and determine if I'll continue with the stereo pair, or switch to dual mono. Additionally, I may eventually try minidsp for integrating the subs. This would mean bypassing the high level connection in favor of the LFE input, and then configure minidsp to set crossover, phase, and time delay to lock it in even tighter with my mains.
Thank you for reaching out. As you noted sub-bass content is often centered in the stereo mix, meaning that it is common between the right and left channel, and as a result it is possible to connect a single subwoofer to one of either the right or left channel speaker and still get good results. This is not the most ideal option, since you will be missing low-frequency from the other speaker channel and some recordings do have stereo separation in the low-frequency range, though it can be done if you are using a single subwoofer in your system. That being said, with a single subwoofer setup it is typically more ideal to connect the High Level cable to the output terminals on your amplifier, so that the sub can receive signal from both the right and left channels.
I wasn’t sure either. I have 2 T Zeros and each is wired to my front pair of MA Radius 90s which are fed by expensive Chord Rumour 2 cables. The wiring is as described on the REL site. The critical step was to tune each REL separately then when turning both on, reduce the volume by about 3 clicks.
On the bass mono v stereo thing, I believe that all vinyl has mono bass below about 60hz. However, the master tapes do not. This is why CDs and MQA streaming appears to be more directional in bass. Big scale recordings using mics such as symphony or organ music shows this.
@@RELAcoustics I'm still confused. I just received a REL T/X5 this week and hooked it up to the back of my integrated amplifier. Is that the best way using a single subwoofer? If not, can you include a diagram how I can hook up my REL sub to both my speakers?
Agree with Guy and Alan's comment below. I'm still a bit confused. Some more explanation/diagram on how to actually connect the (dual) subwoofers would be helpful.
If you have bridged power amplifiers that provide a balanced differential output, why would that cause any damage? Maybe because the high level inputs to the subs have one side connected to ground.
With a traditional Class A/B amplifier the negative output terminal/binding post references to ground, which means that the the subwoofer can be grounded if needed through it's black High Level wire to the negative output terminal or the negative binding post on the main loudspeakers. With a balanced/differential amplifier, the negative output terminals carry a positive voltage rather than referencing to ground. This means that if you connect the High Level cable to the binding posts on your speaker and experience a ground hum from the subwoofer there will be no way to achieve a ground connection through the High Level cable's black wire. As a result, with balanced/differential or Class D amplifiers it is typically best to connect the High Level cable to the amplifier's output terminals, so that a ground connection can be achieved if needed.
@@RELAcoustics Obviously if the power amp is placed near the speakers you could reach a chassis screw or ground post no? Or wire your own speakon connector which is easy to do.
@@ronaldwanders Speakon 4 way connector is the easiest thing to wire. I'd check the rel cable but its something like +1 to left channel hot, +2 to right channel hot and -1 to ground. -2 isn't used.
@@2002holland You are correct regarding the wiring for a REL High Level cable. In addition, if the system's power amp is placed near to the main loudspeakers then you can certainly connect the black wire to a ground screw on the power amp while connecting the red and yellow wires to the binding posts on the main loudspeakers.
What’s best way to connect single sub to pair of mono blocks.?
If you are using a single REL subwoofer in a system with monoblock power amplifiers, then we recommend connecting the subwoofer to your preamp using it's Low Level input. We do not recommend connecting a single subwoofer to two monoblock power amplifiers at the same time, since this can result in significant ground hums and in a worst case can damage the subwoofer and/or the amplifier.
@@RELAcoustics I have a croft preamp which has the usual rca line level inputs and 1 pair of rca out puts to the power amps. Are you suggesting to split the rca output and have 1 rca cable to amp and the the other to the Sub?
I have a REL and have it connected up as advised. Sorry but it is not at all clear what is being described. A diagram would be most helpful in clarifying the upgrade.
Agree!
There are a series of videos on the REL web site how to connect my REL
@@andrewcrossley2448 thanks! I'll check them out.
Hi, I want to use the 3D subwoofer with my Kef R3 in a home theatre, My Q is : Would the Subwoofer play all the Hz of my speaker? or would it just play between 80hz - 20hz ( of course i would be using the LFE input also for the LFE signal ). Thank you,
Thank you for reaching out. When using the High Level input on a REL the subwoofer will receive a full-range signal from your amplifier, though you will then adjust it's crossover control so that it only produces output below where your main loudspeakers are naturally rolling off in their bass response in your room, ideally with as minimal overlap as possible.
I'm looking for information on how to connect two RELs to two stereo systems. None of them have a SUB input. I connected one with High Level and the other with Low Lewel to PreOut (Y RCA). Unfortunately, in the set with the LL connection I have humming noise in the speakers. Is there a way to connect one pair of RELs to two pairs speakers via HL?
Thank you for reaching out. In a 2-channel system, we recommend connecting both subwoofers in stereo using their High Level inputs, with one subwoofer connected to support right channel output and the second connected to support left channel output.
For connection instructions specific to your application, please write in to contactus@rel.net and our team will be happy assist.
We did not understand each other. I have two stereo systems, i.e. two amplifiers, each with a separate pair of speakers.
Yesterday I also sent this question by e-mail.
So just want to try one T9X before committing to 2 and need to connect it to speaker terminals on back of speakers. Am I correct in assuming that 1 positive Rel wire goes to each positive terminal on back of speakers and the ground wire can go to either speaker? I want to try it on a cheap Sony 2 channel STR- DH190 and a Denon X6700H. I understand how to connect to the Denon but it is not possible to connect to the Sony's outputs due to placement etc. Need to connect 1 Rel high level connector to 2 speakers via the speakers binding posts on the speakers themselves.
Thank you for reaching out. The Sony STR-DH190 is a Class A/B amplifier, which means that the black wire of the High Level cable can be connected to a negative binding post on one of either the left channel or right channel speaker. The red wire of the High Level cable will then connect to the positive binding post on the right channel speaker, and the yellow wire will connect to the positive binding post on the left channel speaker.
With a single subwoofer, it will also likely be necessary to trim-back some of the black outer sheathing on the cable so that the individual wires can reach both your left channel and right channel speaker.
If you are connecting the powered sub to the power amp, aren’t you double powering the sub? Does this add load to the amp so that there is less capacity for the LR main speakers?
Thank you for reaching out. The High Level input on a REL subwoofer is designed with a significantly high impedance (approximately 150,000 ohms) which allows it to connect to the main speaker output terminals on an amplifier without placing any current load on the amp or drawing any power away from the main loudspeakers.
Is it possible to use the standard high-level cable supplied with REL subwoofers to connect to Naim power amplifiers e.g. the NAP 250
I use this method with my naim Supernait 3 & Hicap DR no problems
@@luke.boxall Thanks Luke
I wasn’t sure if there were some kind of earthing problem between the name amplifiers and the REL subwoofers.
I noticed that there is a special REL lead designed for that purpose, very expensive too, and I wondered why it was necessary
@@michaelwilliams4086 yes i saw that myself. DO NOT BUY IT! I have asked naim & REL and that lead is not approved by either company and does not solve the problem caused by connecting at the amp end. I have stripped back the high level cable and connected to amp ground. Both red and yellow and connected to right and left speakers respectivey - works perfectly
Rel do make a cable for naim amps.
How can I use stereo pair using bassline blue naim cable connected to the amp terminals. This would probably sound better.
I have powered speakers that I would like to add a sub to but they only have an XLR input from the pre amp, is it possible to connect the prefered Hi input connection or am I stuck with an RCA from the amplitier. Speakers ATC SMC19As don't have a sub output.
Thank you for reaching out. Since you are using active/powered speakers in this system it will be best to connect a REL subwoofer using it's Low Level input to open outputs on your system's preamp. In order to use the High Level input on a REL subwoofer it will be necessary to have passive speakers with a separate amplifier powering them, so that the High Level cable can be connected to the amplifier's output terminals.
I have a StereoBox DS3, a Class-D amp from Pro-Ject and a stereo pair of Speaker 5 S2. I would like to connect a TX 5 subwoofer direct on the speakers. Can i cut off the black hose to connect red and yellow direct on the speakers (2 meters away from each other)? If it is possible, where i have to connect the black cable to ground it? Alter question is, what is the best crossover setting for the Pro-Ject speakers 5 s2? Thanx a lot
Since your StereoBox DS3 is a Class D amplifier, it will be best to connect the High Level cable to the binding posts on the amplifier itself, rather than connecting to the binding posts on the speakers. This way you will be able to achieve an electrical ground reference for the subwoofer, by connecting the black High Level wire to the amplifier's ground thumb screw.
@@RELAcoustics thanx a lot
Can you please do a video instruction on how to connect "high level" to Lyngdorf TDAI-3400 in the balanced differential setup? I have Lyngdorf stating in their manual to "NEVER" connect to a high level connection from their amp to the likes of REL S/812, yet REL is saying to me that it's ok to do this... So I would like to know "HOW" to do this whilst not voiding my warranty at Lyngdorf if I do connect it according to REL... Which is stated to connect via standard stereo main speakers, do Room Perfect correction, then connect your 2 x REL subs high level from binding posts to each high level in on the RELS (but do NOT connect the "Black" wire to the negative binding post for Lyngdorf or balanced differential amps, connect the "Black" wire to a chassis screw on the amp unit from each sub and connect the other wires as per normal... Or connect the coloured wires as normal leaving the "Black" wire off and connecting 2 standard RCA cables coming from each left and right's sub .1/LFE channel to an open RCA port on the back of the Lyngdorf unit), then you tune each sub by ear using the crossovers on the back of the subs (not the Lyngdorf software, that only would control the stereo speaker pair and subs would be turned "off" in Lyngdorf Room Perfect setup).
Can you please show use a walkthrough of this setup with diagrams that is actually "Approved" by Lyngdorf so we know we're not going to void warranties etc...
Thank you for reaching out. Unfortunately we do not have a video about specifically connecting High Level to Lyngdorf balanced/differential amplifiers, though the instructions that you described are correct for connecting High Level to this type of amplifier. Specifically, as long as you do not connect the black wire of the High Level cable to a negative speaker terminal on the amplifier then there will be no risk of damaging the REL subwoofer or the Lyngdorf amplifier. For more information, here is a link to our video about connecting High Level to balanced/differential amplifiers: ua-cam.com/video/jDoY5sVT0XQ/v-deo.html
We can look into collaborating with Lyngdorf to provide High Level connection instructions specific to their amplifiers, though as you noted Lyngdorf generally recommends against connecting High Level since it is possible to damage the amp or subwoofer if you do not follow the correct connection instructions. However, as long as you follow the connections outlined in the above link then there will be no risk of damage to the sub or the amplifier. If in doubt, you can always revert to using the Low Level input on your S/812, which would connect to the RCA preamp outputs on the TDAI-3400.
@@RELAcoustics is the XLR on the back of the REL 812 considered low level also? Could you connect from Lyngdorfs analog xlr out to the REL XLR low level input also if you want to use the subs crossovers? There wouldn't be any risk of damaging the amp or rel if connecting via XLR out to xlr in on subs is there because it's low level?
@@cr5721 The XLR inputs and outputs on the S/812 are for the .1/LFE channel, and bypass the subwoofer's crossover filter circuit. It is possible to connect from the subwoofer output on your Lyngdorf to the XLR .1/LFE input on the S/812, but only if a low-pass crossover can be set within the Lyngdorf to control the upper frequency response of the subwoofer. If not, then it will be best to connect to the RCA Low Level inputs on the S/812, or connect using the High Level input.
If you connect a single REL at the speaker terminals, on which channel would you connect the ground?
If you are using a Class A/B amplifier in your system then the black High Level wire can be connected to the negative binding post on either the left or right channel speaker. However, for a single subwoofer setup it is typically easier to connect the High Level cable to the output terminals on your amplifier, rather than to the speakers, so that you can more easily connect to both the left and right stereo channels.
I have a Technics SU G 700M 2 integrated amp. It is a Digital amp. When I connect the T9x subwoofer will the high level connection be the same as integrated amps that are not digital?
Thank you for reaching out. Since your Technics SU G700M2 is a Class D amplifier, special care must be taken when connecting the High Level cable for a REL subwoofer to it. For more information, here is a link to our video on connecting High Level to Class D amplifiers: ua-cam.com/video/3F5WTOu60hE/v-deo.html
what would happen if you connect a single sub to only one speaker?
This can work fine in some cases, though it will result in the subwoofer only receiving signal from one of either the left or right channel, rather than it receiving both left channel and right channel signal.
I wonder if this method will also resolve subwoofer hum?
Thank you for reaching out. In most cases connecting the High Level cable to your main loudspeakers' binding posts rather than to the amplifier's output terminals will not specifically solve hum or interference. If you are experiencing hum or interference from your REL then at your earliest convenience please write in to contactus@rel.net and our team will be happy to assist as needed.
Hi I am not sure if I am asking the correct question but I will try the best. I have a pair of Stellar M1200 mono blocks and Martin Logan 60xt . In this video you explained that we could connect a single sub to the speakers instead of the amplifier. 1. So I should be able to connect the single REL sub to the Martin Logan Speakers provided that I use an extension to the speaker that further from the sub? 2. What is the difference between connecting it straight to to the mono blocks rather than the speakers, because the speakers are still getting the output from the mono blocks? 3. If the mono blocks have an grounding screw bu design should I be able to connect the sub direct to mono blocks ? .......................... Thanks in advance
Thank you for reaching out. Since you are using monoblock power amplifiers in this system it will be necessary to use a stereo pair of subwoofers in order to take advantage of the High Level input. In our experience connecting a single subwoofer High Level to two monoblocks at the same time will often result in a significant ground loop hum that can be near-impossible to eliminate, and in a worst-case-scenario can result in damage to the subwoofer and/or the amplifier. In addition, since your PS Audio M1200 monoblocks are class D amplifiers it will be best to connect the High Level cables for a pair of REL subwoofers to the output terminals on the amplifiers, rather than to the speaker's binding posts, so that a ground connection can be achieved if needed.
If it is only possible to add a single subwoofer to your system at this time then we recommend connecting it to open outputs on your system's preamp, using the Low Level input on the REL.
Thank you very much for the response. Looks like I will have to use the Pre Amp then. When using the Preamp will I loose a lot of the qualities that are being passed to speakers? My Pre amp has an output that says "Passive output volume controlled. This can be used to connect an Subwoofer". If I connect the low level cable to one of the channel I will be getting mono signal from one of the channels. Is there a recommendation on which channel it should be Left or Right?
Not sure if this is a silly question . Can I use stereo to mono converter and use that to pass the signal to subwoofer in that way I can the signal s from both the channels. Will this increase the subwoofer to produce better sound than using one connection from one of the channels ? Apologies for asking more questions.
@@senerathw Thank you for your response. Using the High Level input does offer improved performance from our subwoofers when possible to do so, though in your case it will be best to connect your REL using it's Low Level input to your preamp, so that it can safely receive both left channel and right channel signal.
If your preamp has a mono subwoofer output jack, then you can use a single standard RCA-to-RCA cable for connecting to the REL's Low Level input. If your preamp has stereo outputs, then you can use an RCA y-cable so that both of these outputs can be connected in to the subwoofer's Low Level input.
@@RELAcoustics Thank you very much for the advice.
rel t-x and tube amps ???
How do you compensate for the delays of the electronics in the REL? This gonna be a filter, and then there’s can be an amplifier. I heard that older RELs have something like 23 ms of delay. I heard that new RELs have something closer to 13 ms of delay. So if you were to have a processor that can delay your main speakers from the sub pre-out, then you can truly time align your subwoofer and your mains. Hooking the subwoofer up to the high-level means that you will always have a small delay in the system, and they won’t actually be in phase. It may work fine for sustained low notes, but I don’t see how it helps the transients.
Thank you for watching. All current REL subwoofer models have at most 8ms of filter delay, with our Reference models having only 4ms of filter delay. This delay is so short that it is inaudible and imperceptible to the human ear, which allows the subwoofer to be time aligned with the main loudspeakers when using either the High Level or line level inputs.
@@RELAcoustics Great info, thanks! Makes sense now.
@@daniellivingston7050 Glad we could help! If anything else comes up then feel free to reach out and we will be happy to assist.
My speakers sound best on the 4ohm tap from my valve amplifier, can I connect my two REL subs to the speaker binding posts or must they only be connected via the amplifier's 8ohm taps?
Thank you for reaching out. To get the best possible performance from the High Level input on a REL subwoofer we recommend connecting the red and yellow wires of the High Level cable to the 8 ohm positive output terminals on the amplifier, even if your main loudspeakers are being connected to the 4 ohm output terminals.
@@RELAcoustics thank you for your help and quick response.
I just purchased a REL HT1003 MK11 subwoofer.
I have a Parasound
5 channel power amplifier & a Marantz pramp/processor.
Both these units have balanced outputs that I make use of.
I am not sure if it is safe to use the REL Subwoofer cable with my preamp/ processor & power amplifier.
Can anyone give me a definitive answer?
I certainly don't want to damage my equipment.
Thanks So Much!
Thank you for reaching out. Since the HT/1003 Mk.II exclusively features RCA line level inputs, it should be connected to the subwoofer output jack on your Marantz pre-processor. If your processor exclusively features XLR outputs, then it will be necessary to use an XLR-to-RCA converter or cable so that the XLR subwoofer output on the processor can feed into the RCA input on the subwoofer.
I have a same brand amplifiers. One integrated and one just a power amp. I can connect the two to bridge in mono. The rels do crazy things when connected to high level this way. Trust me.. I tried everything. I think it's in the design of the amplifiers when in mono..
Anyways.. is connecting to speakers a good idea? My speakers only have one pair of binding post. The amplifiers are a/b... unbalanced. IOTAVX stack.
Thank you for reaching out. When using two stereo amplifiers in their bridged monoblock configuration, we recommend treating them as balanced/differential amplifiers in terms of connecting the High Level cables for REL subwoofers. As a result, it will be best to connect the High Level cables to the amplifiers rather than to the binding posts on your main loudspeakers. In addition, in this case the black wires of the High Level cables should not be connected to a negative speaker terminal, and instead should be connected to a chassis screw on the corresponding amplifier.
If you have any additional questions about connecting REL subwoofers in your system then at your earliest convenience please write in to contactus@rel.net and our team will be happy to assist.
What about if you have a tube amp? Is it okay to connect high level to the speaker in that case, and is it an upgrade vs connecting direct to the tube amp itself?
Thank you for reaching out. It is possible to connect the High Level cable for your REL subwoofer to the binding posts on your speaker, even if you are using a tube amplifier, though when doing so it will be important to make sure that:
a). The negative speaker output terminals on your amplifier reference to electrical ground.
b). The positive leads of your main speaker wire is connected to the 8 ohm positive output terminals on the amplifier.
If these conditions are met then you can connect your High Level cables to the binding posts on the speakers themselves. If you have any additional questions about connecting High Level in your system then feel free to write in to contactus@rel.net and we will be happy to assist.
@@RELAcoustics Thanks for the response!
Now what if it is a fully balanced tube amp where it does not meet condition a? How can I connect the REL to the speaker terminals in that case or is this not possible with that kind of amplifier?
And if it is not possible to connect directly to the speaker, how would I connect them to the fully balanced tube amps? What is the recommended method for this?
@@shawnmathew825 Thank you for your response. If your tube amplifier is fully-balanced then we recommend connecting the High Level cable to the output terminals on the amplifier itself, rather than to the binding posts on your main loudspeakers. By connecting to the amplifier you will be able to more easily achieve a ground connection (through the black wire of the High Level cable) if needed, since a stable ground reference will not be possible on the speaker end of the system.
For High Level connection instructions specific to your system, please provide the model of amplifier that you are using, and the number of subwoofers that you plan on using, and we will be happy to assist.
@@RELAcoustics Hi, if I am using this method to connect to the speaker terminals directly with tube amps, do I need connect my speaker cables to the 4-8 ohm tap? I read somewhere that the REL should be connected to the 4-8 tap when connecting to a tube amp, so I was wondering if I need to connect my speaker cables to that tap to get that same output in this instance since I am connecting to the speaker directly. P.S. my amp as 1-2, 2-4, 4-8 taps on the back.
@@shawnmathew825 Thank you for reaching out. You are correct that the positive (red and yellow) leads of the REL's High Level cable should be connected to the 8 ohm positive output terminals on the tube amplifier. Your main speaker wire can then be connected to the output terminals that match their impedance, even if these are different output terminals from the ones that the High Level cable is connected to.
Will connecting directly to the speaker impact crossover? Since now the amplifier is just sending the same signal to the speaker and sub so doesn’t the speaker just do the same frequency as the sub? Ex if I set my crossover at around 60hz, the sub will do below 60hz but the speaker will still do below 60hz as well? Wherein if the subs are connected to the amplifier it follows the actual crossover and the speakers wont play under 60hz? I’m quite new to this and would like to understand the difference between connecting directly to the amp instead.
Thank you for reaching out. REL subwoofers do not feature a high-pass filtered output, which means that the crossover filter on the subwoofer will only impact it's own output and will not impact the output or frequency response of your main loudspeakers. This will be the case whether you connect the High Level cable to your amplifiers output terminals or to the binding posts on your main loudspeakers.
To get the best possible performance, we recommend setting the Crossover on your REL to below where your main loudspeakers naturally roll-off in their low-frequency extension in your room, with as minimal overlap as possible. If you have additional questions about subwoofer tuning in your system then feel free to write in to contactus@rel.net and we will be happy to assist.
@@RELAcoustics thank you for your response. I understand now. Just a follow up question if the speaker has 4 binding post for bi-wire what would be your recommendation on how to connect the Hi-level cables to it?
@@RELAcoustics btw I have a Mcintosh MA252 and 2 rel T/7is. Thinking of upgrading my speakers to Sonus fabers with 4 speaker binding posts.
@@_superjab_ If you are bi-wiring or bi-amping your speakers, then we would recommend connecting the High Level cable to the binding posts which are driving your speakers' low-frequency drivers. If you are not bi-wiring or bi-amping, and instead have jumpers connected on your speakers' binding post, then you can connect the High Level wires to either the upper or lower binding posts.
Just bought 2 T9/i's and have them next to my front left & right speakers. Does Rel sell short Nutrix (sp?) cables, say 3 feet, I can use to connect the T9's to the speakers so I don't have to shorten the cables that came with my T9's?
Thank you for reaching out, and for supporting REL Acoustics. Unfortunately we do not have shorter lengths of the standard High Level cable available to purchase, though the High Level cable that comes supplied with your T/9i subwoofers can be trimmed to a shorter length if you wish.
We do have different lengths available for the upgrade Bassline Blue High Level cable, and this version is available at 3 meter, 6 meter, and 10 meter lengths.
@@RELAcoustics Thx.
Thanks!!
I just looked at the baselines & on REL's site. The baseline comes with 3 spade connectors. Can REL supply them with just 2 spades for those of us who are using dual REL's?
@@LS-ti6jo Unfortunately we are not able to offer custom lengths or termination options for the Bassline Blue cables. If you are using a pair of RELs, then you can simply place one spade on top of the other and then tighten down the binding post onto both, or re-terminate the cable so that both the red and yellow wires feed into a single spade.
Will this method work for older Rel's such as Stadium III, Stentor etc?
You can connect the High Level cable for older ST III REL models to the binding posts on a speaker, though this is only possible when powering the speakers using a Class A/B amplifier. If you are using a Class D or Balanced/Differential amplifier then it will be best to connect the High Level cable to the output terminals on the amplifier itself.
@@RELAcoustics - Many Thanks!
If you have a balanced power amp and a preamp how would I connect please?
Thank you for reaching out. Here is a link to an article from our website which describes High Level connection to balanced/differential power amplifiers: rel.net/blog/2015-07-23/how-to/how-to-connect-a-rel-to-a-balanced-amp/
This may have already been asked but I have two subs, and want to set them up as a 'stereo pair' with one sub behind the left speaker and the other sub behind the right speaker. For cable length reasons I want to attach them to the speaker terminals rather than the amplifier terminals (high level, obviously). Am I correct that the left sub connects to the left speaker and the right sub to the right speaker? At each speaker, the twisted red+yellow wires attach to the positive speaker terminal, and the black goes to the negative? The video above shows just one sub, hence my question. Thanks (it's a regular class A/B amp, for stereo listening, not AV)
Thank you for reaching out. Since you are using a Class A/B amplifier in this system, it is possible to connect the High Level cables for your REL subwoofers to the binding posts on the corresponding main loudspeaker, rather than connecting to the amplifier's output terminals. This will result in the right channel subwoofer being connected to the right channel speaker, and the left channel subwoofer being connected to the left channel speaker. With both subs, twist together the red and yellow wires and connect to the positive binding post on the corresponding speaker, and connect the black wire to the corresponding negative terminal.
@@RELAcoustics excellent, many thanks
@@RELAcoustics Hi, I have speaker wires with speakON NL2FX ends which I think were made for a Benchmark amp. Could I use these to connect my Rel amps to the speaker bindings without issue, or will it not work because there are not technically 3 wires?
@@claytonwinters9797 Since these SpeakOn-terminated cables use 2-conductor wire, they will likely not perform correctly if used for sending signal to a REL subwoofer. The High Level input for REL subwoofers uses a three-conductor cable.
I have a NAD C368 Class D amp, what would be the best method of connecting my REL subs up for stereo listening, do I apply the same method as adamhindle9215? Thanks.
Hi REL, I want to connect a pair of S510s to an active pair of ATC SCM 40A speakers driven by a Benchmark HPA4 preamplifier. What sort of connection do you advise to use?
Thank you for contacting us. From what I can see online, it appears that your Benchmark HPA4 preamp has both XLR and RCA pre-outs available. As a result, we recommend connecting from the XLR pre-outs to the inputs on your ATC SCM 40A speakers, and then connecting from the RCA pre-outs to the Low Level input on each of the S/510 subwoofers.
We hope that this helps, but if you have any additional questions then feel free to let us know and we will be happy to assist.
@@RELAcoustics Many thanks for your quick reply. I understand that connecting to the low-level inputs of the RELs is the only way (since the ATC SCM 40A does not have a banana, spade or bare wire input, only a XLR input). But the standing problem is that the Benchmark HPA4 only has one pair of RCA pre-outs. How can I connect a pair of REL S/510 then?
@@OrlandoBisacchiCoelho He said to try the XLR outputs of the pre to the active ATC speakers and then use the high level RCA's of the HPA4 to the subs. The REL subs don't have an XLR output unless the S/510's are different... I own an HPA4 for over a year now and this should be real simple. But, you will not be enjoying the time-alignment that John is speaking above here, because active speakers without secondary outputs don't have provisions to do so. You'll have to make do with what the ATC speakers provide, which btw, is great as those speakers are wonderful.
@@TheGlotz69 and @REL Acoustics thanks for your reply. The problem is not how to connect the Benchmark HPA4 to the ATC SCM 40A pair. The question is how to connect any signal to the *pair* of REL S510s. The HPA4 has one pair (L/R) of (unbalanced) RCA outputs. Is the REL low-level input mono? *If* that is the case I can connect the single RCA Left output of the HPA4 to the RCA input of the LEFT S510 and connect the single RCA Right output of the HPA4 to the RCA input of the RIGHT S510. Will that work and be safe?
@@OrlandoBisacchiCoelho This connection can be made using a pair of RCA cables, with one cable ran from the right channel RCA pre-out on your Benchmark HPA4 to one of the Low Level input jacks on the right channel S/510, and the second cable ran from the left channel RCA pre-out to one of the Low Level input jacks on the left channel S/510.
The XLR pre-outs on the HPA4 will then be used for connecting to your ATC active speakers.
can i connect my rel via lfe to an av receiver and via high input to a stereo amplifier at the same time? turning off one or the other of course
Thank you for reaching out. With all of our High Level compatible subwoofers it is possible to connect High Level to a power amplifier while simultaneously connecting using the .1/LFE input to the sub-out on an AV receiver.
@@RELAcoustics okay thanks. Yesterday it started humming. I disconnected the rca from the lfe input and the high level and the humming continues. If I disconnect the Neutrik from the rel if it disappears when I reconnect it it appears even though nothing is connected to the other end. I reconnected everything again, turn on the amp, turn on the rel and all good. I turn off the amp and the noise comes back. I turn it on and off again and it hasn't done it anymore. What can be?
@@Cloud13. Thank you for your response, and we are sorry to hear about the hum which you are experiencing. When you have a chance, please write in to contactus@rel.net with a brief description of your system and the hum you're experiencing and our service team will be happy to assist with troubleshooting and providing resolution options as needed.
@@RELAcoustics ok thanks!
Hi so I have a rel stygian , it has only high level in, but my onkyo tx be 545 only has rca outputs for sub and the 7 channel Audio out, how would I connect this to my amp ? I’m having a nightmare
Thank you for reaching out. Since your REL Stygian exclusively features a High Level input, we recommend connecting it to the front left and front right speaker output terminals on your Onkyo AVR. These will be the exact same output terminals on the receiver as your main speaker wire is connected to.
@@RELAcoustics hi thanks for the quick reply , my problem is I’m using 7 speaker set up allready so all the terminals already have wires hooked up, can I just connect it to one that’s being being used and it will share it or what? As I know my onkyo is putting out around 100 watts per channel so will it not effect my front right speakers if I do that?
@@RELAcoustics sorry I mean it’s xlr on my rel stygian is that the same setup ?
@@Uey233 The High Level cable should ideally be connected to the exact same front left and front right channel speaker output terminals on the amplifier as your main speaker wire is connected to, meaning that these output terminals will be shared with both the High Level cable and your main speaker wire.
Since the Stygian was one of the first REL subwoofer models produced, it used an XLR plug for it's High Level cable. Soon after the Stygian this was changed to the NL4/SpeakOn plug found on all current REL models, though otherwise the High Level connections are exactly the same.
@@RELAcoustics brilliant thanks for the help, is it worth getting a cable for my stygian I’ve seen a xlr to single rca , could i use that and then hook up to the subwoofer line out on my onkyo amp rather than get a xlr high level ?
can I connect the subwoofer to a naim amp?
Thank you for reaching out. REL subwoofers can be connected to Naim amplifiers, though the best method for doing so will depend on the specific model of Naim amplifier, model of subwoofer, and the number of subwoofers that you are using in the system.
When you have a chance, please write in to contactus@rel.net and we will be happy to assist with connection instructions specific to your system.
Hi.. I'm using a naim 5si.. proac anniversary tablette.. would like to know how to connect a single REL sub to my system.. thanks so much!
Sam from Singapore
How about a class A
I have a Kell Ksa 100S
Thank you for reaching out. Since your Krell KSA-100S is a Class A amplifier, the negative speaker terminals on the amp do reference to ground and as a result the black wire of the High Level cable can be connected either to one of these negative speaker terminals or to a negative binding post on your main loudspeakers. If you are using a single subwoofer then we recommend connecting it's High Level cable to the output terminals on the amp itself so that it can more easily draw signal from both the left and right channels. If you are using a pair of subwoofers, then you have the option of either connecting the High Level cable to the amplifier's output terminals or to the binding posts on the corresponding main loudspeaker.
@@RELAcoustics thank you sir i have connected the yellow to the black and these to negative ksa100S to 2 rel T9i is this okay?
@@urbantone Thank you for your response, and yes these connections are correct. If anything else comes up or if you have any additional questions then feel free to let us know and we will be happy to assist.
Is it OK to connect the rel to naim nap 300dr amp .
Thank you for reaching out. It is possible to connect a REL subwoofer to the Naim NAP 300DR using the High Level input, though due to the output stage design of this amp it is not possible to make this connection using the standard High Level cable which is supplied with the subwoofer. Instead, we recommend using the Naim version of our Bassline Blue cable, which is built with additional resistance added to the cable which allows it to safely be connected directly to the NAP 300DR's output terminals. Alternatively, you could use the stock High Level cable and connect to the binding posts on the main loudspeakers, rather than to the amplifier's output terminals, though this is usually easiest when using a stereo pair of subwoofers.
For more information on connecting High Level to Naim amplifiers, feel free to write in to contactus@rel.net and we will be happy to assist.
@@RELAcoustics How do I use a stereo pair of s 812 subs using the bassline blue naim amp cable connected to the naim 300dr amp terminals.
@@RELAcoustics thanks for reply
@@hawkmoon369 The following connections can be used when wiring a stereo pair of S/812 to your Naim NAP-300R using the Naim Bassline Blue cable:
- Connect both the red and yellow wires of the right channel subwoofer's High Level cable to the right channel positive output terminal on the amplifier.
- Connect the black wire of the right channel subwoofer's High Level cable to the right channel negative output terminal.
- Connect both the red and yellow wires of the left channel subwoofer's High Level cable to the left channel positive output terminal on the amplifier.
- Connect the black wire of the left channel subwoofer's High Level cable to the left channel negative output terminal.
@@RELAcoustics Thanks perfect I will start off with one than add the second at later date.
So in regard to the caveat you mention with the balanced differential operation….. I have an Audio research ref 75se and a stereo pair of S510’s. Am I in the “no-go” camp of not being able to try this setup of connecting to the speakers instead? Thanks.
@@ronaldwanders thanks for your reply. 🙂I am doing just this at the moment. What I’m trying to figure out is if I can try to connect the subs at the speakers, like John is describing in the posted video, with my given equipment. Thus, the caveat mentioned.
@@ronaldwanders thanks. Luckily, it all sounds glorious as is. Enjoy!
Thank you for reaching out. Unfortunately, with the Audio Research REF-75se we do not recommend connecting the High Level cables to the binding posts on your main loudspeakers. With this amplifier it will be best to connect the High Level cable to the amplifier's output terminals.