I have this exact amplifier but the box doesn't show the bass boost remote control on the front and inside the box there isn't the control at all and the amp doesn't have the plug in location on it as shown in your video
The model number of the product in this video is Pioneer GM-D8704. Please be sure of the model number of your particular amplifier. The model number should be shown on the box, and on the top of the amp, and on the bottom of the amplifier on a label. The model number of the product in this video is GM-D8704. The product featured in this video is the North American version of the product. Pioneer GM-D8704 produced for North America has a bass boost remote control in the box, and a port for the bass boost remote control on the side of the amp. A similar previous model of amplifier was Pioneer GM-D8604. You can see it here: ua-cam.com/video/aqmu9yZov1M/v-deo.html The GM-D8604 did not have the wired bass boost remote control, and had no port of the side of the amplifier for the bass boost remote. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@pioneerelectronics I do have the 8704 just checked the box but I'm based in the UK 🇬🇧. Maybe thats my issue. My GM-D9701 came with the bass boost but unfortunately not the GM-D8704
So my question would be, is there a noticeable sound quality difference between the GM-DX874 and this, GM-D8704? If so, why would Pioneer make seemingly the same amp (other than a few internals) for a LIMITED time, and not continue making the better of the two? I'm so confused right now...lol please enlighten me.
I agree. You are confused. Pioneer does not say the GM-DX874 is available for a LIMITED time. In your confused state, you added the word time to the word limited. Pioneer offers many products that build upon a great design and offer expanded capabilities or performance. These products are labeled as LIMITED (with no mention of time) and are offered at selected retailers in the US. The Pioneer GM-D8704 is a great amp. Compact, clean and powerful. The Pioneer GM-DX874 is a far superior amplifier. The Pioneer GM-DX874 uses Pioneer designed and manufactured high quality acoustic elements within the audio signal chain of the amplifier. For example: Pioneer brand Audio Capacitors for higher audio quality and additional stability in the power supply. The use of these Pioneer brand audio components delivers more stable power, greater headroom with better transient response and reliability. The two amplifiers are built around the same board layout. This is true, and it's simply a reality of manufacturing efficiency. The difference in the high quality audio grade components used is what makes a great amplifier into something special. Details like these aren’t shown in a simple spec chart. For example: how hard can the amp hit a single note? And, how fast can it recover, to hit a 2nd note just as hard? This is where high end audio grade components make the GM-DX874 shine. If you want a visual difference in the amplifiers to help with your confusion, the top panel is milled from aluminum for excellent heat dispersion, lower magnetic properties, and show grade cosmetics. That and the gold plated RCA's for a more reliable connection over time. Gold doesn't oxidize like other metals. GM-D8704 is an excellent amplifier but does not have these higher end features. By the way, it's only a matter of time until any product is discontinued and replaced by a new product with a new design. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Yes, it can handle them with proper wiring. However, I think you'll be much better off with a Pioneer GM-D9705 amplifier. You can learn more about Pioneer GM-D9705 here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html If you want to use the Pioneer GM-D8704, you can and it will work and be very reliable. The GM-D8704 can handle 1 ohm operation all day long. You can run the mids and tweeters from the "A" channel, and the subwoofer from the "B" channel. No problem. The concern is that you'll need separate hardware crossovers for the mids and separate hardware crossovers for the tweeters because they will need to be on the same channel If you try to mix the mids and woofer on the same channel, you'll still need separate crossovers. . This can be done, without any question. However, it's not easily adjustable from that point. I recommend to use the Pioneer GM-D9705. It's an excellent and reliable 5 channel amplifier. This way you can run the tweeters on the "A" channel. All of the mids on the "B" channel at 2 ohms. And the subwoofer wired at 2 ohms on the subwoofer channel. All will be easily adjustable. You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Price is beyond my budget unfortunately for 9705. I am planning to buy A class D in another 6 months time so will divert my DVC there. Many thanks for your reply :)
Do what works best for you. The amplifier's gain control is designed to be used to balance the input coming from the in-dash receiver. I recommend to set all of the in-dash receiver audio settings to zero. For example, Bass Boost, Equalizer, subwoofer output etc... Set them all to zero. Turn the amplifier bass boost to zero. Then turn up the volume on your in-dash receiver and set the gain control so that you can not hear any distortion coming from any of the speakers in the system. It should be loud but no distortion. Depending upon what Kenwood radio you have, the best setting may be somewhere between Normal and H or even closer to 6.5. When you've got the amplifier gain control set, go back and slowly and carefully readjust the audio settings on the in-dash receiver. The best audio settings for you may be different than what they were when you started the gain set process. You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
@@MegaDevsta 3 ohm subwoofers will work great with the Pioneer GM-D8704. The GM-D8701 will operate safely down to 1 ohm. You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@MegaDevsta 3 ohm speakers will work great with the Pioneer GM-D8704 amplifier. You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
You can find more videos about Pioneer amplifiers in this playlist: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Why does it deliver less power 125 watt at 1 ohm impedance and more power i.e. 150 watt at 2 ohm impedance? Dose it internally regulates the output voltage depending upon the load? Or may be it has a current limiting mechanism?
The amp regulates the output voltage depending upon the load impedance. The Pioneer GM-D8704 can operate safely and reliably at 1 ohm, it's designed at a 2 ohm "sweet spot" for best performance. You can find more videos on Pioneer's UA-cam Channel here: www.youtube.com/@pioneerelectronics
LPF means Low Pass Filter or low frequencies pass through. This is a subwoofer crossover. HPF means High Pass Filter and high frequencies pass through. This is a midrange crossover. Both the "A" Channel and the "B" Channel on Pioneer GM-D8704 can be used with a LPF or subwoofer crossover, or it can be set up as a HPF or mid range crossover. The crossover frequencies are selectable on a dial from 40Hz to 500Hz. You can see that very clearly here: ua-cam.com/video/E-VbUBAGwAI/v-deo.html Depending upon how you choose to set up the channel you choose HPF or LPF and then choose a crossover frequency for that channel. For example, one possible way to set up this amp is to use the "A" Channel for a pair of door speakers. On the "A" Channel choose HPF and set the crossover frequency at 80Hz. And bridge the "B" Channel for a subwoofer. On the "B" channel choose LPF and set the crossover frequency at 80Hz. You can find more videos about Pioneer Amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Can I connect a rockford fosgate P3SD4-12, 4 OHM DVC, in parallel 2 ohm configuration BRIDGED on channel B ? How much power will it deliver in that case?
The Pioneer DM-D8704 is designed to operate from 1 to 8 ohms load. When bridging the Pioneer GM-D8704, the amplifier sees 1/2 of the bridged circuit impedance. For example, if the circuit has a nominal impedance of 2 ohms, the amplifier will see a 1 ohm load in bridged configuration. You can expect about 250 watts to the "B" channel in this this configuration. You can find a copy of the owner's manual for this product here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual102620.pdf
Hi. Recently I brought this amplifier. I connected the pioneer speaker TS - A1600C to channel A of the amplifier. I encountered a problem when I set the gain to H or higher, the speaker and tweeter will start to have a hissing/static noise when I turned my Headunit volume to 0. Is that normal? As such, I have to turn the amplifier gain lower than H to prevent this irritating hissing or static noise to be heard, resulting my speaker sound softer. What can I do? Thank you
Clearly noticeable noise like what you are describing is not normal operation. This can be from a number of different reasons including installation issues, in-dash receiver issues, wiring issues, and noise created by the vehicle itself. What is the vehicle? What is the in-dash receiver? What is the output voltage of the RCA's on the in-dash receiver? I recommend to do some trouble shooting. With the vehicle off, disconnect the RCA cables from the amplifier. Now switch the vehicle on and power up the amp. Do you still hear the noise? If not, you know the noise is not created by the amp. If you still hear the noise, check the power and ground connections and the speaker connections. It's possible there is a problem with the amplifier. First be sure to check the amplifier's connections for power and ground. The power cable to the battery and ground cable. Both of these connections need to be with the same type of heave gauge cable. The ground connection needs to be made directly to the metal body or frame of the vehicle. Be sure to remove paint in the connection area to get a good ground. Next, are the RCA cables high quality, and not frayed with poor grounding at the connections on each end? Are you running the RCA cables together with the power cable from the battery? This can cause noise from the magnetic field created by the power cable from the battery. Is the noise coming from the receiver? An amplifier will amplifier all of the signal it receives from the in-dash receiver. That includes noise in the signal from the receiver. I recommend to turn all of the boost settings to 0. For example, bass boost, EQ, speaker level settings, all to zero. This will give you the cleanest signal available to send to the amplifier. What is the music source? If you are using Bluetooth from a phone, turn down the phone volume to 50% or so. Do you hear a difference?
@@pioneerelectronics hi. I followed all the steps mentioned by you, and discovered the Subwoofer is creating the noise when it is plug into the amplifier and when the gain is set to H or Normal. The noise disappeared when I set the gain lower than H or plug out the active sub woofer cable from the output. The whole audio set up is done by a local audio workshop. The installer connected the active subwoofer to the output of the amplifier, front speaker to ch A, coaxial to Ch B. May I know is the connection done correctly? What are some possible cause and solution to solve the noise problem?
@@chinweelim8299 What is the in-dash receiver? What is the output voltage of the RCA's on the in-dash receiver? The Pioneer GM-D8704 has RCA outputs that can be used to connect a separate amplifier. This is a proper connection. Full range speakers connected to the "A" channel and the "B" channel also sounds like normal installation. I recommend to check the ground connection of both of the amplifiers. The ground connection needs to be made to metal in the body or frame of the vehicle. There can be no paint at the ground connection to make sure of a clean connection. Here are a few possibilities: 1. Since plugging in the powered subwoofer is causing the noise, I recommend to ground both amplifiers in the same location. To the same bolt or screw. If they are already grounded to the same location, change the ground to different locations to see if there is a difference in the noise. 2. Change the RCA cables from the GM-D8704 to the powered subwoofer. 3. Ground the outer shield of the RCA cables from the Pioneer GM-D8704 to the powered subwoofer. This can often remove ground noise. Get a different powered subwoofer. One that's not causing a noise issue.
The Pioneer GM-D8704 a great sound quality amp. When you compare amplifier specs, please be sure to compare the same testing measurement systems among different amplifiers. The CEA-2006 tested standard S/N ratio is 75 dBA weighted reference (1 watt into 4 ohms) This is shown on the outside of the amp packaging and in the owner's manual. The S/N ratio is 95dB as measured in (IFH-A Network) You can find this information listed in the owner's manual. You can download a copy of the owner's manual here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual102620.pdf An even better sound quality amp is the GM-DX874 seen here: www.pioneerelectronics.com/PUSA/Car/Amplifiers/GM+Digital+Series/GM-DX874 The Pioneer GM-D8704 is a great amp. Compact, clean and powerful. The Pioneer GM-DX874 is a far superior amplifier. The Pioneer GM-DX874 uses Pioneer designed and manufactured high quality acoustic elements within the audio signal chain of the amplifier. For example: Pioneer brand Audio Capacitors for higher audio quality and additional stability in the power supply. The use of these Pioneer brand audio components delivers more stable power, greater headroom with better transient response and reliability. The two amplifiers are built around the same board layout. This is true, and it's simply a reality of manufacturing efficiency. The difference in the high quality audio grade components used is what makes a great amplifier into something special. Details like these aren’t shown in a simple spec chart. For example: how hard can the amp hit a single note? And, how fast can it recover, to hit a 2nd note just as hard? This is where high end audio grade components make the GM-DX874 shine. If you want a visual difference in the amplifiers to help see a difference, the top panel is milled from aluminum for excellent heat dispersion, lower magnetic properties, and show grade cosmetics. That and the gold plated RCA's for a more reliable connection over time. Gold doesn't oxidize like other metals. GM-D8704 is an excellent amplifier but does not have these higher end features. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
I have got a question, this amplifier can handle high input, but it has only got RCA inputs, and the negatives are usually common, how can you connect a high input, where you cannot use a common negative???
The Pioneer GM-D8704 ships with Speaker Level to RCA adapters seen here: ua-cam.com/video/E-VbUBAGwAI/v-deo.html The amplifier will adjust to the input signal taken directly from the speaker connection. You can find the owner's manual for the Pioneer GM-D8704 here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual110818.pdf If you want to convert the speaker level input to RCA input with an external adapter many are available. Here is one option: www.crutchfield.com/shopsearch/speaker_to_rca_converter.html Another option is to get an in-dash receiver with RCA outputs and you don't need to have this discussion. Many are available. Here is one possibility: ua-cam.com/video/0UgoK9v_KcM/v-deo.html You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Which one should I buy Rockford fosgate r2 500.4 or this one to run 2pair ovals and 1pair mids with clean output? One pair oval is 125rms and another is 60watt rms and mids are 100watt rms . Please give the best suggestions because Rockford is a bit expensive than 8704 it has better SNR and if I should invest in x874 but it is hi-res audio amp
I recommend the Pioneer GM-D8704. It's a great amplifier. Clean and powerful, and very flexible in it's design for installation. In an application like you have described above, it will be extremely reliable and should provide many years of great service. If you play Hi-Res audio files like FLAC or DSD, I recommend spending a little more for the Pioneer GM-DX874. As you mentioned this amp is Hi-Res Audio certified. The Pioneer GM-D8704 is a great amp. The Pioneer GM-DX874 is a far superior amplifier. The Pioneer GM-DX874 uses Pioneer designed and manufactured high quality acoustic elements within the audio signal chain of the amplifier. For example: Pioneer brand Audio Capacitors for higher audio quality and additional stability in the power supply. The use of these Pioneer brand audio components delivers more stable power, greater headroom with better transient response and reliability. The two amplifiers are built around the same board layout. This is true, and it's simply a reality of manufacturing efficiency. The difference in the high quality audio grade components used is what makes a great amplifier into something special. Details like these aren’t shown in a simple spec chart. For example: how hard can the amp hit a single note? And, how fast can it recover, to hit a 2nd note just as hard? This is where high end audio grade components make the GM-DX874 shine. In addition, the top panel is milled from aluminum for excellent heat dispersion, lower magnetic properties, and show grade cosmetics. That and the gold plated RCA's for a more reliable connection over time. Gold doesn't oxidize like other metals. GM-D8704 is an excellent amplifier but does not have these higher end features. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@deckerdotto6035 Thank you for your response Deckerd but I've talked to some installers and they told me that nowadays pioneer amps are as good as they were before and these new model they will surely trip or will go in protection mode that's why I'm confused because they told me Rockford is a bit pricier but will be a trust worthy product.
I'm happy to help. The Pioneer GM-D8704 and GM-DX874 have been manufactured since 2018. These are not what anyone would call new or untested products. They are both excellent and reliable amplifiers. Fully capable of 1 ohm operation. Thousands and thousands of Pioneer amplifiers have been sold and installed world wide, with great success for many users. Maybe it's possible the installers you spoke with work at a store that sells rockford amps, and not Pioneer amplifiers. So, they get paid to sell and install rockford amps, and not Pioneer. Or maybe it's possible the installers are confused about Pioneer amplifier models. Pioneer has 2 different lines of amplifiers. The entry level GM-A series amplifiers. These are less expensive, lower power class A/B amps. Then there is Pioneer's GM-D series of amplifiers like the GM-D8704/GM-DX874. These are affordably priced Class-D high current amplifiers with great installation flexibility and 1 ohm operation. The idea that Pioneer GM-D8704 will go into protection mode when properly installed is simply uninformed. Please take a look at this video about the GM-D8704: ua-cam.com/video/U-ZXuKtagXE/v-deo.html and this one: ua-cam.com/video/KDIi5j3bFj4/v-deo.html
Hi @pioneerelectronics, I would like to advice with you and get A short answer for how exactly to connect my sp's(incl' the sub). So when using 4 or 2 sp's + sub - how should I connect it? there is A & B and I really dont know what sp to connect and the Sub woofer. Also from the multimedia...I know from home theater systems at home that there is ZONE A & B when you have 2 set's of spekers, if 2.1 or 5.1. Also, which cables do you recommand to use that combine low-reasonable price with fair quality? Amazon or eBay or Aliexpress prefered. Thanks for your help!
You asked for a short answer. Connect your speakers to the "A" Channel. Connect your subwoofer to the "B" channel. I recommend using 12 gauge speaker wire. You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
I believe I have a faulty amp. On channel b with my sub connected as mono bridged with low pass filter on I only get a muffled mess. I only get clean bass through if I turn my lpf switch to off but then I'm also getting high frequencies through my sub. Is it possible for the lpf to be faulty?
It's possible for any product to be faulty. However, before you assume that, please be more specific with your question. What is the model number of your Pioneer amplifier? If you are switching on the LPF on channel "B" what is the selected crossover frequency for the LPF on channel "B"? If it's very low for example 40Hz, this may be normal operation. When a crossover is working correctly with an LPF set to, for example: 80Hz, you should only be hearing low frequency "muffled" sounds. That's what 80zHz and lower sounds like. You should be hearing high frequencies through other speakers in your vehicle at the same time. The high frequencies are where much of the detail in the music is heard. Are you using a subwoofer output from your in-dash receiver? If so, do you also have an LPF on the in-dash receiver? What crossover frequency?
@@pioneerelectronics thanks for the reply. Model number is gm-d8704 as in the video. My stereo doesn't have an inbuilt low pass filter. With the low pass filter on the amp turned on and set to any frequency between 40 and 500hz does not really change the sound coming through the sub, maybe just the slightest. and neither does turning the gain all the way up or down. Tested also a brand new sub to see whether it was a faulty sub which reacted the same way. The subwoofer is only vibrating and no excursion is seen or felt. Unless I turn the low pass filter off and then it fully pumps like normal with the exception that high frequencies also come through. And the channel b on the amp is connected through the rear rca output of the stereo and not a subwoofer rca output.
@@motok1d To be certain, I recommend to check the Input A/B switch to see if this effects the sound in a significant way. If not, from what you've described, it may in fact be a faulty amplifier. If this is a new product, I recommend to contact the Pioneer Authorized Dealer where it was purchased. If you need to have the product serviced, you can contact Pioneer Customer Support for help finding a service center. You can contact Pioneer in the US here: www.pioneerelectronics.com/PUSA/Support or by calling in the US 1-800-421-1404.
That's correct. Use the Speaker level to RCA input adapter included with the product shown here: ua-cam.com/video/E-VbUBAGwAI/v-deo.html The amplifier will adjust to the input signal. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Please be more specific with your question. The Pioneer GM-D8704 is an amplifier designed to operate a speaker or subwoofer that does not have it's own built-in amplifier such as the Pioneer TS-A3000LB seen in this Pioneer unboxing video: ua-cam.com/video/WkbRBGtW9yM/v-deo.html A powered subwoofer is a subwoofer built into an enclosure that has it's own amplifier also built into the subwoofer. In most cases, you can not add an amplifier to a powered subwoofer because the powered subwoofer already has it's own amplifier. You can learn more about Pioneer powered subwoofers here: ua-cam.com/video/RFb9Qpt9Obo/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here; ua-cam.com/users/pioneerelectronics
This video was made for the North American market. Other areas of the world may have slightly different products. Are you sure you have the Pioneer GM-D8704? The model number is printed on the top plate of the amplifier and on a serial number label on the bottom of the amp. Or do you have Pioneer GM-D8604? 8604 does not have a Bass Boost. You can see it here: ua-cam.com/video/aqmu9yZov1M/v-deo.html You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
The Bass Boost knob controls the Bass Output of the "B" Channel. It does not effect the "A" Channel. The Bass Boost is centered at 60Hz and can add 0 to 18dB boost to those frequencies. The LPF settings you choose for the "B" Channel are very important for the overall operation of the Bass Boost Remote. One possible set up for the Pioneer GM-D8704 is to use the "A" Channel to operate door speakers using the HPF on the "A" Channel. And to Bridge the "B" channel to a subwoofer and use the LPF and the Bass Boost Remote to control the subwoofer output. You can find more information about how crossovers effect the output of your speakers here: ua-cam.com/video/WvJXYh6vk_0/v-deo.html You can find more videos about Pioneer Amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
The Pioneer GM-DX874 is a higher end version of the Pioneer GM-D8704. The inputs and outputs, switches and set up are the same between the amp in the video above and the Pioneer GM-DX874, but that's where the similarities end. The Pioneer GM-DX874 uses Pioneer designed and manufactured high quality acoustic elements within the audio signal chain of the amplifier. For example: Pioneer brand Audio Capacitors for higher audio quality and additional stability in the power supply. The use of these Pioneer brand audio components for power, headroom, and reliability is the difference. The top panel is milled from aluminum for excellent heat dispersion, lower magnetic properties, and show grade cosmetics. That and the gold plated RCA's. GM-D8704 is an excellent amplifier but does not have these features. You can find more information about the Pioneer GM-DX874 here: www.pioneerelectronics.com/PUSA/Car/Amplifiers/GM+Digital+Series/GM-DX874 You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Class FD is Pioneer's designation of a Full Range Class D amplifier. Many mono Class D amplifiers play a very limited output range, for example Class D Pioneer GM-D9701 seen here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html Pioneer Class D mono amplifiers are designed to play with subwoofers, and so can have a limited output range of approximately 20Hz to 2500Hz, and work perfectly well for that application. Pioneer Class FD or Full Range Class D will play from 20Hz to 20,000Hz or higher, and can be used with both full range speakers as well as subwoofers. You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Yes. 4 speakers on the "A" Channel and 4 speakers on the "B" Channel. I recommend speakers that are each 4 ohm rated or higher. This will give you flexibility in your wiring for the speakers. You can learn more about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
The Pioneer GM-D8704 is 2 ohm stable. It should be no problem. You can find the owner's manual for the Pioneer GM-D8704 here: www.pioneerelectronics.com/PUSA/Car/Amplifiers/GM+Digital+Series/GM-D8704#manuals
Yes the Pioneer GM-D8704 could run the two Pioneer subwoofer though it may be underpowered for this type of operation. One subwoofer bridged on the amplifiers "A" Channel and one subwoofer bridged on the amplifiers "B" channel. A better choice would be the Pioneer GM-D8701 seen here: ua-cam.com/video/-Uq25Goo0sU/v-deo.html or the Pioneer GM-D9701 seen here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here; ua-cam.com/users/pioneerelectronics
Yes, the Pioneer GM-D8704 will work great with the TS-W312D4 on channel "A" or channel "B" on the amplifier, or on each channel. You could also use the Pioneer GM-D8701 seen here: ua-cam.com/video/-Uq25Goo0sU/v-deo.html You can learn more about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@pioneerelectronics I hope to connect one 312D4 subwoofer and two pioneer 650w 6x9 speakers.What is the best way to connect these, and should the wires for the subwoofer be connected in a Series or Parallel ?
@@chamaralakshan4349 I recommend to use the amplifiers "A" channel for the 6x9 speakers. Wire these speakers in stereo. One speaker on the left output and one speaker on the right output of the "A" channel. For the subwoofer use the "B" channel. The amplifier's bass boost knob effects the "B" channel only. You can download the owner's manual for the TS-A301D4 here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/TRD1505A.pdf You can download the owner's manual for the GM-D8704 here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual102620.pdf I recommend to present the amplifier with a 2 ohm bridged circuit on the "B" channel. Use the parallel wiring diagram in the manual. You can learn more about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
I recommend between 8 gauge and 4 gauge depending upon the length of the run from the battery to the amplifier. For a short run, of 15 feet or less, you can go with 8 gauge. For a longer run of up to 24 feet, use 6 gauge and for a longer run, out to to 35 feet use 4 gauge. Please be sure to install an 80 amp fuse on the power wire within 12 inches of the vehicles battery. And to use ground cable of the same gauge as the power cable. You can learn more about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Deckerd Otto thanks a lot for the recommendation I was also thinking about 8gauge. Car is very small.. probably will be under 10 feet for sure. I’m planning to run as 4 channel for D series 6.5 in front a A series 6.5 in back (can’t fit D series in back unfortunately)
Yes the Pioneer GM-D8704 could run the two JBL subwoofers. One subwoofer bridged on the amplifiers "A" Channel and one subwoofer bridged on the amplifiers "B" channel. A better choice would be the Pioneer GM-D8701 seen here: ua-cam.com/video/-Uq25Goo0sU/v-deo.html or the Pioneer GM-D9701 seen here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here; ua-cam.com/users/pioneerelectronics
Yes, the GM-D8704 would be a great choice for those speakers. You might also consider Pioneer GM-D9705 if you are looking to run a subwoofer in your system, now or in the future. It has similar power and a subwoofer channel. You can see it here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Yes you can. The Pioneer GM-D8704 is designed to operate with a range of 1 ohm to 8 ohms on any given channel. You can find the Owner's manual here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual102620.pdf and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Please be more specific with your question. What is the model number of your Pioneer amplifier? If you have GM-D8704, what gain control is causing the issue? Input A or input B? What speakers are connected to the Pioneer GM-D8704 amp? What is the overall ohm load shown to the amp on the "A" Channel and on the "B" channel? What is the volume level when the amp goes into protection? Common issues that put the amp into self- protection mode are a poor ground connection, or low voltage at the power connection on the amp. Are you measuring 14.4 volts at the amp while playing music? Also a dead short across a speaker connection. For example speaker terminals touching metal in the vehicle's door. You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@Bighotwheelhunter The Pioneer GM-D8704 is a 4 channel amplifier. That means an "A" channel and a "B" channel. One possible way to wire this amp is with a pair of speakers on the "A" Channel and a second pair of speakers on the "B" channel. What is your setup? What speakers are on the "A" channel? What speakers are on the "B" channel? What is the impedance of the speakers? Are you bridging the output? When you turn up the volume if the voltage is dropping below 12 this could be the reason the amp is shutting down.
It's a very good amplifier and very flexible in it's design. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
I GOT THIS BADBOY LAST WEEK!!! Using it to push 2 10" DVC Shallow Mount Fozzys in sealed box tuned to 45Hz and 50Hz
Just ordered one. I can’t wait for it to get here
You can find more videos on Pioneer amplifiers here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html
Getting mine on tuesday, two of em with two TS300S4's to complement my existing dual 10" kickers.
I have this exact amplifier but the box doesn't show the bass boost remote control on the front and inside the box there isn't the control at all and the amp doesn't have the plug in location on it as shown in your video
The model number of the product in this video is Pioneer GM-D8704. Please be sure of the model number of your particular amplifier. The model number should be shown on the box, and on the top of the amp, and on the bottom of the amplifier on a label. The model number of the product in this video is GM-D8704. The product featured in this video is the North American version of the product. Pioneer GM-D8704 produced for North America has a bass boost remote control in the box, and a port for the bass boost remote control on the side of the amp. A similar previous model of amplifier was Pioneer GM-D8604. You can see it here: ua-cam.com/video/aqmu9yZov1M/v-deo.html The GM-D8604 did not have the wired bass boost remote control, and had no port of the side of the amplifier for the bass boost remote. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@pioneerelectronics I do have the 8704 just checked the box but I'm based in the UK 🇬🇧. Maybe thats my issue. My GM-D9701 came with the bass boost but unfortunately not the GM-D8704
The product may be different in the European region. You can find support from Pioneer in Europe here: www.pioneer-car.eu/eur/support
So my question would be, is there a noticeable sound quality difference between the GM-DX874 and this, GM-D8704? If so, why would Pioneer make seemingly the same amp (other than a few internals) for a LIMITED time, and not continue making the better of the two? I'm so confused right now...lol please enlighten me.
I agree. You are confused. Pioneer does not say the GM-DX874 is available for a LIMITED time. In your confused state, you added the word time to the word limited. Pioneer offers many products that build upon a great design and offer expanded capabilities or performance. These products are labeled as LIMITED (with no mention of time) and are offered at selected retailers in the US.
The Pioneer GM-D8704 is a great amp. Compact, clean and powerful. The Pioneer GM-DX874 is a far superior amplifier. The Pioneer GM-DX874 uses Pioneer designed and manufactured high quality acoustic elements within the audio signal chain of the amplifier. For example: Pioneer brand Audio Capacitors for higher audio quality and additional stability in the power supply. The use of these Pioneer brand audio components delivers more stable power, greater headroom with better transient response and reliability. The two amplifiers are built around the same board layout. This is true, and it's simply a reality of manufacturing efficiency. The difference in the high quality audio grade components used is what makes a great amplifier into something special. Details like these aren’t shown in a simple spec chart. For example: how hard can the amp hit a single note? And, how fast can it recover, to hit a 2nd note just as hard? This is where high end audio grade components make the GM-DX874 shine.
If you want a visual difference in the amplifiers to help with your confusion, the top panel is milled from aluminum for excellent heat dispersion, lower magnetic properties, and show grade cosmetics. That and the gold plated RCA's for a more reliable connection over time. Gold doesn't oxidize like other metals. GM-D8704 is an excellent amplifier but does not have these higher end features.
By the way, it's only a matter of time until any product is discontinued and replaced by a new product with a new design.
You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Can this amp handle 4 Mids & a dual coil Subwoofer & TS-20 ??
Mids - Pioneer 650 Pro (2pairs)
Subwoofer : Pioneer DVC
Yes, it can handle them with proper wiring. However, I think you'll be much better off with a Pioneer GM-D9705 amplifier. You can learn more about Pioneer GM-D9705 here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html If you want to use the Pioneer GM-D8704, you can and it will work and be very reliable. The GM-D8704 can handle 1 ohm operation all day long. You can run the mids and tweeters from the "A" channel, and the subwoofer from the "B" channel. No problem. The concern is that you'll need separate hardware crossovers for the mids and separate hardware crossovers for the tweeters because they will need to be on the same channel If you try to mix the mids and woofer on the same channel, you'll still need separate crossovers. . This can be done, without any question. However, it's not easily adjustable from that point. I recommend to use the Pioneer GM-D9705. It's an excellent and reliable 5 channel amplifier. This way you can run the tweeters on the "A" channel. All of the mids on the "B" channel at 2 ohms. And the subwoofer wired at 2 ohms on the subwoofer channel. All will be easily adjustable. You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Price is beyond my budget unfortunately for 9705.
I am planning to buy A class D in another 6 months time so will divert my DVC there.
Many thanks for your reply :)
When I set gain at normal my kenwood stereo gets loud at 27 and when I set the gain at h it gets loud at 30 do I leave it at normal or h
Do what works best for you. The amplifier's gain control is designed to be used to balance the input coming from the in-dash receiver. I recommend to set all of the in-dash receiver audio settings to zero. For example, Bass Boost, Equalizer, subwoofer output etc... Set them all to zero. Turn the amplifier bass boost to zero. Then turn up the volume on your in-dash receiver and set the gain control so that you can not hear any distortion coming from any of the speakers in the system. It should be loud but no distortion. Depending upon what Kenwood radio you have, the best setting may be somewhere between Normal and H or even closer to 6.5. When you've got the amplifier gain control set, go back and slowly and carefully readjust the audio settings on the in-dash receiver. The best audio settings for you may be different than what they were when you started the gain set process. You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
What would happen when hooking up some JBL's that are 3 ohms?
I would like to know also
@@MegaDevsta 3 ohm subwoofers will work great with the Pioneer GM-D8704. The GM-D8701 will operate safely down to 1 ohm. You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Thanks for the reply! What about 3 ohm car speakers (JBL)
@@MegaDevsta 3 ohm speakers will work great with the Pioneer GM-D8704 amplifier. You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Thanks a lot .. this is awesome information ... I have learned a lot ...
You can find more videos about Pioneer amplifiers in this playlist: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Why does it deliver less power 125 watt at 1 ohm impedance and more power i.e. 150 watt at 2 ohm impedance? Dose it internally regulates the output voltage depending upon the load? Or may be it has a current limiting mechanism?
The amp regulates the output voltage depending upon the load impedance. The Pioneer GM-D8704 can operate safely and reliably at 1 ohm, it's designed at a 2 ohm "sweet spot" for best performance.
You can find more videos on Pioneer's UA-cam Channel here: www.youtube.com/@pioneerelectronics
Hi nice video, what are the cut off of the subwoofer and mid range frequency?
LPF means Low Pass Filter or low frequencies pass through. This is a subwoofer crossover. HPF means High Pass Filter and high frequencies pass through. This is a midrange crossover. Both the "A" Channel and the "B" Channel on Pioneer GM-D8704 can be used with a LPF or subwoofer crossover, or it can be set up as a HPF or mid range crossover. The crossover frequencies are selectable on a dial from 40Hz to 500Hz. You can see that very clearly here: ua-cam.com/video/E-VbUBAGwAI/v-deo.html Depending upon how you choose to set up the channel you choose HPF or LPF and then choose a crossover frequency for that channel. For example, one possible way to set up this amp is to use the "A" Channel for a pair of door speakers. On the "A" Channel choose HPF and set the crossover frequency at 80Hz. And bridge the "B" Channel for a subwoofer. On the "B" channel choose LPF and set the crossover frequency at 80Hz. You can find more videos about Pioneer Amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Can I connect a rockford fosgate P3SD4-12, 4 OHM DVC, in parallel 2 ohm configuration BRIDGED on channel B ? How much power will it deliver in that case?
The Pioneer DM-D8704 is designed to operate from 1 to 8 ohms load. When bridging the Pioneer GM-D8704, the amplifier sees 1/2 of the bridged circuit impedance. For example, if the circuit has a nominal impedance of 2 ohms, the amplifier will see a 1 ohm load in bridged configuration.
You can expect about 250 watts to the "B" channel in this this configuration.
You can find a copy of the owner's manual for this product here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual102620.pdf
Hi. Recently I brought this amplifier. I connected the pioneer speaker TS - A1600C to channel A of the amplifier. I encountered a problem when I set the gain to H or higher, the speaker and tweeter will start to have a hissing/static noise when I turned my Headunit volume to 0. Is that normal? As such, I have to turn the amplifier gain lower than H to prevent this irritating hissing or static noise to be heard, resulting my speaker sound softer. What can I do? Thank you
Clearly noticeable noise like what you are describing is not normal operation. This can be from a number of different reasons including installation issues, in-dash receiver issues, wiring issues, and noise created by the vehicle itself.
What is the vehicle?
What is the in-dash receiver? What is the output voltage of the RCA's on the in-dash receiver?
I recommend to do some trouble shooting.
With the vehicle off, disconnect the RCA cables from the amplifier. Now switch the vehicle on and power up the amp. Do you still hear the noise? If not, you know the noise is not created by the amp. If you still hear the noise, check the power and ground connections and the speaker connections. It's possible there is a problem with the amplifier.
First be sure to check the amplifier's connections for power and ground. The power cable to the battery and ground cable. Both of these connections need to be with the same type of heave gauge cable. The ground connection needs to be made directly to the metal body or frame of the vehicle. Be sure to remove paint in the connection area to get a good ground.
Next, are the RCA cables high quality, and not frayed with poor grounding at the connections on each end? Are you running the RCA cables together with the power cable from the battery? This can cause noise from the magnetic field created by the power cable from the battery.
Is the noise coming from the receiver? An amplifier will amplifier all of the signal it receives from the in-dash receiver. That includes noise in the signal from the receiver. I recommend to turn all of the boost settings to 0. For example, bass boost, EQ, speaker level settings, all to zero. This will give you the cleanest signal available to send to the amplifier.
What is the music source? If you are using Bluetooth from a phone, turn down the phone volume to 50% or so. Do you hear a difference?
@@pioneerelectronics hi. I followed all the steps mentioned by you, and discovered the Subwoofer is creating the noise when it is plug into the amplifier and when the gain is set to H or Normal. The noise disappeared when I set the gain lower than H or plug out the active sub woofer cable from the output. The whole audio set up is done by a local audio workshop.
The installer connected the active subwoofer to the output of the amplifier, front speaker to ch A, coaxial to Ch B. May I know is the connection done correctly?
What are some possible cause and solution to solve the noise problem?
@@chinweelim8299 What is the in-dash receiver? What is the output voltage of the RCA's on the in-dash receiver?
The Pioneer GM-D8704 has RCA outputs that can be used to connect a separate amplifier. This is a proper connection. Full range speakers connected to the "A" channel and the "B" channel also sounds like normal installation.
I recommend to check the ground connection of both of the amplifiers. The ground connection needs to be made to metal in the body or frame of the vehicle. There can be no paint at the ground connection to make sure of a clean connection.
Here are a few possibilities:
1. Since plugging in the powered subwoofer is causing the noise, I recommend to ground both amplifiers in the same location. To the same bolt or screw. If they are already grounded to the same location, change the ground to different locations to see if there is a difference in the noise.
2. Change the RCA cables from the GM-D8704 to the powered subwoofer.
3. Ground the outer shield of the RCA cables from the Pioneer GM-D8704 to the powered subwoofer. This can often remove ground noise.
Get a different powered subwoofer. One that's not causing a noise issue.
this amp has good power for speakers bit is this amp good for a Sq build ? what is Is the real signal to noise ratio. Will it have noticeable noise?
The Pioneer GM-D8704 a great sound quality amp.
When you compare amplifier specs, please be sure to compare the same testing measurement systems among different amplifiers.
The CEA-2006 tested standard S/N ratio is 75 dBA weighted reference (1 watt into 4 ohms) This is shown on the outside of the amp packaging and in the owner's manual.
The S/N ratio is 95dB as measured in (IFH-A Network)
You can find this information listed in the owner's manual. You can download a copy of the owner's manual here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual102620.pdf
An even better sound quality amp is the GM-DX874 seen here: www.pioneerelectronics.com/PUSA/Car/Amplifiers/GM+Digital+Series/GM-DX874
The Pioneer GM-D8704 is a great amp. Compact, clean and powerful. The Pioneer GM-DX874 is a far superior amplifier. The Pioneer GM-DX874 uses Pioneer designed and manufactured high quality acoustic elements within the audio signal chain of the amplifier. For example: Pioneer brand Audio Capacitors for higher audio quality and additional stability in the power supply. The use of these Pioneer brand audio components delivers more stable power, greater headroom with better transient response and reliability. The two amplifiers are built around the same board layout. This is true, and it's simply a reality of manufacturing efficiency. The difference in the high quality audio grade components used is what makes a great amplifier into something special. Details like these aren’t shown in a simple spec chart. For example: how hard can the amp hit a single note? And, how fast can it recover, to hit a 2nd note just as hard? This is where high end audio grade components make the GM-DX874 shine. If you want a visual difference in the amplifiers to help see a difference, the top panel is milled from aluminum for excellent heat dispersion, lower magnetic properties, and show grade cosmetics. That and the gold plated RCA's for a more reliable connection over time. Gold doesn't oxidize like other metals. GM-D8704 is an excellent amplifier but does not have these higher end features. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
I bought it used. But didn't get the remote. is there a place i can buy the bass knob?
Are you in the North American region? Or in the US. Please respond.
I have got a question, this amplifier can handle high input, but it has only got RCA inputs, and the negatives are usually common, how can you connect a high input, where you cannot use a common negative???
The Pioneer GM-D8704 ships with Speaker Level to RCA adapters seen here: ua-cam.com/video/E-VbUBAGwAI/v-deo.html The amplifier will adjust to the input signal taken directly from the speaker connection. You can find the owner's manual for the Pioneer GM-D8704 here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual110818.pdf If you want to convert the speaker level input to RCA input with an external adapter many are available. Here is one option: www.crutchfield.com/shopsearch/speaker_to_rca_converter.html Another option is to get an in-dash receiver with RCA outputs and you don't need to have this discussion. Many are available. Here is one possibility: ua-cam.com/video/0UgoK9v_KcM/v-deo.html You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Which one should I buy Rockford fosgate r2 500.4 or this one to run 2pair ovals and 1pair mids with clean output? One pair oval is 125rms and another is 60watt rms and mids are 100watt rms . Please give the best suggestions because Rockford is a bit expensive than 8704 it has better SNR and if I should invest in x874 but it is hi-res audio amp
I recommend the Pioneer GM-D8704. It's a great amplifier. Clean and powerful, and very flexible in it's design for installation. In an application like you have described above, it will be extremely reliable and should provide many years of great service. If you play Hi-Res audio files like FLAC or DSD, I recommend spending a little more for the Pioneer GM-DX874. As you mentioned this amp is Hi-Res Audio certified. The Pioneer GM-D8704 is a great amp. The Pioneer GM-DX874 is a far superior amplifier. The Pioneer GM-DX874 uses Pioneer designed and manufactured high quality acoustic elements within the audio signal chain of the amplifier. For example: Pioneer brand Audio Capacitors for higher audio quality and additional stability in the power supply. The use of these Pioneer brand audio components delivers more stable power, greater headroom with better transient response and reliability. The two amplifiers are built around the same board layout. This is true, and it's simply a reality of manufacturing efficiency. The difference in the high quality audio grade components used is what makes a great amplifier into something special. Details like these aren’t shown in a simple spec chart. For example: how hard can the amp hit a single note? And, how fast can it recover, to hit a 2nd note just as hard? This is where high end audio grade components make the GM-DX874 shine.
In addition, the top panel is milled from aluminum for excellent heat dispersion, lower magnetic properties, and show grade cosmetics. That and the gold plated RCA's for a more reliable connection over time. Gold doesn't oxidize like other metals. GM-D8704 is an excellent amplifier but does not have these higher end features. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@deckerdotto6035 Thank you for your response Deckerd but I've talked to some installers and they told me that nowadays pioneer amps are as good as they were before and these new model they will surely trip or will go in protection mode that's why I'm confused because they told me Rockford is a bit pricier but will be a trust worthy product.
I'm happy to help. The Pioneer GM-D8704 and GM-DX874 have been manufactured since 2018. These are not what anyone would call new or untested products. They are both excellent and reliable amplifiers. Fully capable of 1 ohm operation. Thousands and thousands of Pioneer amplifiers have been sold and installed world wide, with great success for many users. Maybe it's possible the installers you spoke with work at a store that sells rockford amps, and not Pioneer amplifiers. So, they get paid to sell and install rockford amps, and not Pioneer. Or maybe it's possible the installers are confused about Pioneer amplifier models. Pioneer has 2 different lines of amplifiers. The entry level GM-A series amplifiers. These are less expensive, lower power class A/B amps. Then there is Pioneer's GM-D series of amplifiers like the GM-D8704/GM-DX874. These are affordably priced Class-D high current amplifiers with great installation flexibility and 1 ohm operation. The idea that Pioneer GM-D8704 will go into protection mode when properly installed is simply uninformed. Please take a look at this video about the GM-D8704: ua-cam.com/video/U-ZXuKtagXE/v-deo.html and this one: ua-cam.com/video/KDIi5j3bFj4/v-deo.html
Hi @pioneerelectronics, I would like to advice with you and get A short answer for how exactly to connect my sp's(incl' the sub). So when using 4 or 2 sp's + sub - how should I connect it? there is A & B and I really dont know what sp to connect and the Sub woofer. Also from the multimedia...I know from home theater systems at home that there is ZONE A & B when you have 2 set's of spekers, if 2.1 or 5.1. Also, which cables do you recommand to use that combine low-reasonable price with fair quality? Amazon or eBay or Aliexpress prefered. Thanks for your help!
You asked for a short answer. Connect your speakers to the "A" Channel. Connect your subwoofer to the "B" channel. I recommend using 12 gauge speaker wire. You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
I believe I have a faulty amp. On channel b with my sub connected as mono bridged with low pass filter on I only get a muffled mess. I only get clean bass through if I turn my lpf switch to off but then I'm also getting high frequencies through my sub. Is it possible for the lpf to be faulty?
It's possible for any product to be faulty. However, before you assume that, please be more specific with your question. What is the model number of your Pioneer amplifier?
If you are switching on the LPF on channel "B" what is the selected crossover frequency for the LPF on channel "B"? If it's very low for example 40Hz, this may be normal operation.
When a crossover is working correctly with an LPF set to, for example: 80Hz, you should only be hearing low frequency "muffled" sounds. That's what 80zHz and lower sounds like. You should be hearing high frequencies through other speakers in your vehicle at the same time. The high frequencies are where much of the detail in the music is heard.
Are you using a subwoofer output from your in-dash receiver? If so, do you also have an LPF on the in-dash receiver? What crossover frequency?
@@pioneerelectronics thanks for the reply. Model number is gm-d8704 as in the video. My stereo doesn't have an inbuilt low pass filter. With the low pass filter on the amp turned on and set to any frequency between 40 and 500hz does not really change the sound coming through the sub, maybe just the slightest. and neither does turning the gain all the way up or down. Tested also a brand new sub to see whether it was a faulty sub which reacted the same way. The subwoofer is only vibrating and no excursion is seen or felt. Unless I turn the low pass filter off and then it fully pumps like normal with the exception that high frequencies also come through. And the channel b on the amp is connected through the rear rca output of the stereo and not a subwoofer rca output.
@@motok1d To be certain, I recommend to check the Input A/B switch to see if this effects the sound in a significant way. If not, from what you've described, it may in fact be a faulty amplifier. If this is a new product, I recommend to contact the Pioneer Authorized Dealer where it was purchased. If you need to have the product serviced, you can contact Pioneer Customer Support for help finding a service center. You can contact Pioneer in the US here: www.pioneerelectronics.com/PUSA/Support or by calling in the US 1-800-421-1404.
Is a line output converter not needed if using the provided RCA adapters?
That's correct. Use the Speaker level to RCA input adapter included with the product shown here: ua-cam.com/video/E-VbUBAGwAI/v-deo.html The amplifier will adjust to the input signal. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Thanks for the nice video. Can i connect this amp to a powered sub-woofer?
Please be more specific with your question. The Pioneer GM-D8704 is an amplifier designed to operate a speaker or subwoofer that does not have it's own built-in amplifier such as the Pioneer TS-A3000LB seen in this Pioneer unboxing video: ua-cam.com/video/WkbRBGtW9yM/v-deo.html A powered subwoofer is a subwoofer built into an enclosure that has it's own amplifier also built into the subwoofer. In most cases, you can not add an amplifier to a powered subwoofer because the powered subwoofer already has it's own amplifier. You can learn more about Pioneer powered subwoofers here: ua-cam.com/video/RFb9Qpt9Obo/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here; ua-cam.com/users/pioneerelectronics
I recently bought this amp (exact same model), but it didn't came with bass boost remote and neither has connection port for it. How is it possible?
This video was made for the North American market. Other areas of the world may have slightly different products. Are you sure you have the Pioneer GM-D8704? The model number is printed on the top plate of the amplifier and on a serial number label on the bottom of the amp. Or do you have Pioneer GM-D8604? 8604 does not have a Bass Boost. You can see it here: ua-cam.com/video/aqmu9yZov1M/v-deo.html You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
@@deckerdotto6035 www.amazon.de/-/en/Pioneer-GM-D8704-4-2-channel-power-amplifier/dp/B07MFB7YSC/ref=sr_1_1?dchild=1&keywords=Pioneer+GM-D8604&qid=1610990026&sr=8-1
Does this bass boost knob control strictly bass output of the amp or does it control the high output?
The Bass Boost knob controls the Bass Output of the "B" Channel. It does not effect the "A" Channel. The Bass Boost is centered at 60Hz and can add 0 to 18dB boost to those frequencies. The LPF settings you choose for the "B" Channel are very important for the overall operation of the Bass Boost Remote. One possible set up for the Pioneer GM-D8704 is to use the "A" Channel to operate door speakers using the HPF on the "A" Channel. And to Bridge the "B" channel to a subwoofer and use the LPF and the Bass Boost Remote to control the subwoofer output. You can find more information about how crossovers effect the output of your speakers here: ua-cam.com/video/WvJXYh6vk_0/v-deo.html You can find more videos about Pioneer Amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
@@deckerdotto6035 thank you!
Why can't I find any videos or reviews or much info for the gm-dx874
The Pioneer GM-DX874 is a higher end version of the Pioneer GM-D8704. The inputs and outputs, switches and set up are the same between the amp in the video above and the Pioneer GM-DX874, but that's where the similarities end. The Pioneer GM-DX874 uses Pioneer designed and manufactured high quality acoustic elements within the audio signal chain of the amplifier. For example: Pioneer brand Audio Capacitors for higher audio quality and additional stability in the power supply. The use of these Pioneer brand audio components for power, headroom, and reliability is the difference. The top panel is milled from aluminum for excellent heat dispersion, lower magnetic properties, and show grade cosmetics. That and the gold plated RCA's. GM-D8704 is an excellent amplifier but does not have these features. You can find more information about the Pioneer GM-DX874 here: www.pioneerelectronics.com/PUSA/Car/Amplifiers/GM+Digital+Series/GM-DX874 You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
Whats Class FD?
Class FD is Pioneer's designation of a Full Range Class D amplifier. Many mono Class D amplifiers play a very limited output range, for example Class D Pioneer GM-D9701 seen here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html Pioneer Class D mono amplifiers are designed to play with subwoofers, and so can have a limited output range of approximately 20Hz to 2500Hz, and work perfectly well for that application. Pioneer Class FD or Full Range Class D will play from 20Hz to 20,000Hz or higher, and can be used with both full range speakers as well as subwoofers. You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
This amp possible connection of 4mid and 4 tweeters thanks
Yes. 4 speakers on the "A" Channel and 4 speakers on the "B" Channel. I recommend speakers that are each 4 ohm rated or higher. This will give you flexibility in your wiring for the speakers. You can learn more about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Deckerd Otto can you give diagrams to install or i put parallel on both channel to 2ohms stable thanks
The Pioneer GM-D8704 is 2 ohm stable. It should be no problem. You can find the owner's manual for the Pioneer GM-D8704 here: www.pioneerelectronics.com/PUSA/Car/Amplifiers/GM+Digital+Series/GM-D8704#manuals
Deckerd Otto thanks but the quality of music is no diffirent for 4ohms and 2ohms connection
The Pioneer GM-D8704 will deliver more power at 2 ohms, than it will at 4 ohms. Sound quality will be very nearly the same.
can this amps can run two pioneer 2000watts subwoofers
Yes the Pioneer GM-D8704 could run the two Pioneer subwoofer though it may be underpowered for this type of operation. One subwoofer bridged on the amplifiers "A" Channel and one subwoofer bridged on the amplifiers "B" channel. A better choice would be the Pioneer GM-D8701 seen here: ua-cam.com/video/-Uq25Goo0sU/v-deo.html or the Pioneer GM-D9701 seen here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here; ua-cam.com/users/pioneerelectronics
Is this amplifier compatible with the TS-W312D4 subwoofer?
Yes, the Pioneer GM-D8704 will work great with the TS-W312D4 on channel "A" or channel "B" on the amplifier, or on each channel.
You could also use the Pioneer GM-D8701 seen here: ua-cam.com/video/-Uq25Goo0sU/v-deo.html
You can learn more about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html
You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@pioneerelectronics I hope to connect one 312D4 subwoofer and two pioneer 650w 6x9 speakers.What is the best way to connect these, and should the wires for the subwoofer be connected in a Series or Parallel ?
@@chamaralakshan4349 I recommend to use the amplifiers "A" channel for the 6x9 speakers. Wire these speakers in stereo. One speaker on the left output and one speaker on the right output of the "A" channel.
For the subwoofer use the "B" channel. The amplifier's bass boost knob effects the "B" channel only.
You can download the owner's manual for the TS-A301D4 here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/TRD1505A.pdf
You can download the owner's manual for the GM-D8704 here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual102620.pdf
I recommend to present the amplifier with a 2 ohm bridged circuit on the "B" channel. Use the parallel wiring diagram in the manual.
You can learn more about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html
You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
What gauge power cable is recommended for this amp?
I recommend between 8 gauge and 4 gauge depending upon the length of the run from the battery to the amplifier. For a short run, of 15 feet or less, you can go with 8 gauge. For a longer run of up to 24 feet, use 6 gauge and for a longer run, out to to 35 feet use 4 gauge. Please be sure to install an 80 amp fuse on the power wire within 12 inches of the vehicles battery. And to use ground cable of the same gauge as the power cable. You can learn more about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Deckerd Otto thanks a lot for the recommendation I was also thinking about 8gauge. Car is very small.. probably will be under 10 feet for sure. I’m planning to run as 4 channel for D series 6.5 in front a A series 6.5 in back (can’t fit D series in back unfortunately)
Does this amps can Play two jbl 1100 watts subwoofers
Yes the Pioneer GM-D8704 could run the two JBL subwoofers. One subwoofer bridged on the amplifiers "A" Channel and one subwoofer bridged on the amplifiers "B" channel. A better choice would be the Pioneer GM-D8701 seen here: ua-cam.com/video/-Uq25Goo0sU/v-deo.html or the Pioneer GM-D9701 seen here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here; ua-cam.com/users/pioneerelectronics
Thanks
Should run kappa 60csx ?
Yes, the GM-D8704 would be a great choice for those speakers. You might also consider Pioneer GM-D9705 if you are looking to run a subwoofer in your system, now or in the future. It has similar power and a subwoofer channel. You can see it here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html You can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics
harga power pioneer GM-d8704
You can find more videos about Pioneer amplifiers here: ua-cam.com/video/99Hfmc8QxVc/v-deo.html and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
Hi, this was very helpful to me, during my installation. Can use 6 ohms on this amplifier? Thanks.
Yes you can. The Pioneer GM-D8704 is designed to operate with a range of 1 ohm to 8 ohms on any given channel. You can find the Owner's manual here: www.pioneerelectronics.com/StaticFiles/Manuals/Car/GM-D8704_DX874_OwnersManual102620.pdf and you can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@pioneerelectronics hi, can i use bandpass on this amplifier, if so how? 8 thanks.
It goes into protect mode when the gain is on h
Please be more specific with your question. What is the model number of your Pioneer amplifier? If you have GM-D8704, what gain control is causing the issue? Input A or input B? What speakers are connected to the Pioneer GM-D8704 amp? What is the overall ohm load shown to the amp on the "A" Channel and on the "B" channel? What is the volume level when the amp goes into protection? Common issues that put the amp into self- protection mode are a poor ground connection, or low voltage at the power connection on the amp. Are you measuring 14.4 volts at the amp while playing music? Also a dead short across a speaker connection. For example speaker terminals touching metal in the vehicle's door. You can find more videos on Pioneer's UA-cam Channel here: ua-cam.com/users/pioneerelectronics
@@pioneerelectronics it's the gain when I move it closer to normal it doesn't go in protect
@@pioneerelectronics it's the 8704 and it's hooked up to kicker 6.5 100rms I'm not doing 14 volts
@@pioneerelectronics when the alternator is charging it's around 14v and its drops down to 12v
@@Bighotwheelhunter The Pioneer GM-D8704 is a 4 channel amplifier. That means an "A" channel and a "B" channel. One possible way to wire this amp is with a pair of speakers on the "A" Channel and a second pair of speakers on the "B" channel. What is your setup? What speakers are on the "A" channel?
What speakers are on the "B" channel?
What is the impedance of the speakers?
Are you bridging the output?
When you turn up the volume if the voltage is dropping below 12 this could be the reason the amp is shutting down.
So this amp is basically god?
It's a very good amplifier and very flexible in it's design. You can find more videos about Pioneer amplifiers here: ua-cam.com/video/6h3b_c3Yxnk/v-deo.html and you can find more videos on Pioneer's You Tube Channel here: ua-cam.com/users/pioneerelectronics