CHEAP & EASY! Add Bluetooth to a Vintage Hifi Console Stereo - KRC-86B
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- Опубліковано 3 чер 2018
- This is the final part of our RCA Stereo Orthophonic Console service. I'll show you how to add bluetooth to any old console like this. Here's what you need:
5V Power Supply: bit.ly/2LXU9IB
KRC-86B CSR8630 Bluetooth Receiver Module: bit.ly/2kNa7ct
Phono Preamp: amzn.to/2LVPZkI
PART 1: • 1958 RCA Console (Firs...
PART 2: • RCA Console Amp - 1st ...
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Awesome video! I'm wondering what your opinion would be about using a similar 110VAC/9VDC isolated module like that as pedal power in a custom pedal board? Too much noise being SMPS vs a linear regulated supply?
Great restoration Brad well done and thank you for sharing your knowledge!
Loved how you did that! I’ve been wanting to add a Bluetooth connection to my old Sony amp for years, I may even go as far as trying to add to my old car too. I’ve been following, listening and learning from you and uncle Doug as well. Keep up the great job. Kudos! Joe Boyd
Brilliant Brad! Pretty cool if you ask me, and the bonus blue tooth was a real surprise!
You do excellent work. I’m not a Bluetooth fan, but seeing this great console restored has been very enjoyable. I think you made a great choice with the Technics table. Easy to service, and PMount cartridges will likely be available, with many options, for many years to come.
Again, Brad, another project nicely done. I like the way you are advocating the dovetailing of digital technology with older models; it sort of sidesteps the term 'obsolete', as it allows the best current utilization of both. I think we'd all be better off to view more projects along these lines...IMHO.
Here's the thing...if the latest generation can't find an excuse to spend money revamping these old consoles, if they can't find a good reason to keep them in their homes and apartments, taking up space they could otherwise use for stashing their tidepods or Apple products, we'll ensure all this stuff ends up at the dump.
On the one hand, I begrudgingly agree, with the caveat that I wish they could appreciate tube technology on its own merits, but I know that's too much to ask. On the other hand, I can see how this marriage could well be utilized in newer projects, and to that end, it piques my interest...keep up the good work.
What Hollywood actress changed out world?
The conclusion of the EPIC TRILOGY!
This is great, I may be doing this to an old Eico HF-81 I just restored.
Thank you,Sir!!! Very nice work!!!
Nice. New meets very old and works great.
Thanks, this video is just what I was looking for
Nice video! I have a 1991 Sony all analog/transistor Stereo HiFi amplifier I might try this on.
"EN" is usually for "ENABLE", which you could use to power the device on and off, instead of using a switch on the power supply.
The retrofitting of a Bluetooth module in this stereo reminded me of Retro Radio Farm's work. They restore old radios to working order, and when you buy them, you have an option to have Bluetooth added to it.
I'm tempted to do this with my mono portable turntable.
TP4 cartridge....must be a Technics turntable. That's a hell of a lot easier on records than the original TT. Great video. I use old phone chargers for isolated power supplies for Bluetooth modules, but at just a couple of bucks, your solution make a lot of sense.
Excellent! Thank you.
I've got a similar BT board coming in. I looked to make sure it's not an amplified BT board though, My plan is this. I'm wiring the BT L/R to my reel to reel preamp input lines and that's it.
Hopefully the recorder can then record what I send from my phone and record to tape, or just listen to the paused recording as it's passed through the preamp. And extending the LED to a front panel area, hopefully there is an old chassis screw I can replace with the led? But should look cool.
But I've first gotta recap and replace the 8 transistors on the preamp, as there 40 years old now. Heads look like new.
Akai 4000 DS reel to reel
I was wondering if you were going to wire the speakers in stereo to eliminate the extra cab thing. Glad you did.
Yeah, unlikely she'll ever get the speaker cab extension. Also, it solved the issue of one channel being quieter than the other.
"It's definitely gonna work, I'm pretty sure" Lol, Luv ya man.
i love it,, i think about the old timers who built this kinda stuff and wonder what they would make of the blue tooth mod.
This is really cool. I have what you call a console, we call it a "Radiogram" here in England. Mine is an old HMV model, it was my great uncles, then my grandmothers, it's just something that was always there. The lid hasn't been opened in 20 years and it's been used as a stand for a 1990s HiFi system since 1994. There's probably one of those "yo dawg, I put a hifi on yo hifi because I hear you like hifi" memes in there somewhere :D
Cool project
You "made provision for the sound of the future."
Wild..
You said "Installed in the Rear" in my best Bevis & Butthead voices 'hu hu hu a hu hu hu a hu"
huhuhuhuhuh....aaaahuhuhuhuh
Great job man 👍
Well done Brad
I am converting a 1937 Philco AM radio to be a blue tooth speaker and I am just going to sell the tube chassis and electronics to someone that needs it for their radio and use a Bluetooth receiver and little solid state amp board. The Bluetooth board is from Parts express (more expensive but no soldering required) and it runs on 12 volts (I pick up the 12 volt wall wart power supplies from my local church operated second hand store for 20 cents each, lol.) The link won't work for whatever reason but go to Parts Express and search for Sure Electronics AA-AB41136 Bluetooth 4.0 Audio Receiver Board aptX +EDR 12 VDC It has RCA jacks for the out put and screw terminals for the power. Cool video thanks for sharing!
Good One Brad!
You can take a cheap BT speaker apart and use the board from it. Just follow the same wiring as the cheap speaker to mount it. You can also get BT transmitters and receivers that work well.
Nice work! I followed your lead (no pun intended) and purchased the PS and board. The board came with a 470uF electrolytic, but I don't see where you used it. Can it be disregarded? Thanks.
The Guitologist+ I would love to see you make a mini amp using a class d amp. you can get a 100w @10% THD mono block for $10 or so and use a Altoids container and add your goodies. or use one in a case you picked up that was gutted. Just a idea.
That. Is. Awesome!
Pretty slick
Hey Brad! So did you wire each OT independently? so the secondaries aren't tied to each other in any way?
I have this exact same console amp with no cabinet. I want to get it working and build a cabinet for it.
Hi,from the InL and InR and Agd can i connect an aux input like rca?
You are the greatest!😉
Could you use batteries instead of AC to power the BT?
Question. Are there components available to connect a turntable via Bluetooth or WiFi wirelessly to a stereo amp located in another room.
You're a damn wizard, Brad. How do you feel about doing a music install on a school-bus conversion? Vintage component stereo with turntable, and that bluetooth witchcraft, and a basic recording and video editing station. Might make for an interesting few videos.
Which tap of the transformer did you use to drive the speaker? Sock used yellow, but after splitting the speakers into two (doubling the impedance), I'm suspecting the green would be a better match.
Hi Brad ,Mate love you videos,your a a very knowledgeable guy and a good bloke aswell,i have an AWA 25watt tube P.A amp that runs a pair of RCA 7027a output tubes and pre amp consists of a pair of 12ax7's. I want to convert this to a guitar amp. Is there any chance i could email you some pics and a schematic to get your thoughts on it.? Oh also i live in Australia so any help would be appreciated. Thanks,Matt.
the "EN" connector on the bluetooth is an "Enable" circuit. allows an on / off switch..
Brad, this was a fantastic video. On behalf of myself and David Koresh we thank you. Very useful.
An enemy of the state if probably a friend of mine.
I was going to do that but rectify the 6.3v rail and use that instead
A nice resto-mod!
So you don't any whiney sounding noises in your audio from that switching power supply?
You guys with your niche hobbies, I'm getting sucked in and smarter! Hahaha thanks,
A bit confused. On the board AGND (for OUTL, OUTR) and GND (for VCC) are the Same common. They are Connected together on the board. So, how does having a separate isolated power supply help?
Maybe I missed it but have you asked the client if she has the second speaker?
EN is usually enable
How can i converted my phono turntable to stereo
I was thinking of doing this to a Sony Shelf system I have laying around I was thinking of converting the 30 pin iphone dock and have a Bluetooth module installed in it's place since no one uses ipod docks anymore I checked the service manual and the power for the dock is 5V which is good so I don't have to worry about power I'll just have the shelf System power it would this work is my main question
You should be able to get a plug that will work with that dock and solder the power leads and audio leads and have a working receiver. Good idea! And you get get the older docking stations at thrift stores for nothing.
Great test music ;)
Your record was close and handy. :D
What song is it? I looked in your UA-cam channel and didn't seem to find it.
Cool song by Peter Tosh - "Ketchy Shuby" .. Jamaican patois for catch some shovin' (love making).
What I like about the old consoles, at least until the mid-60's they were made of solid furniture grade hardwood and they just look good when they're refinished.
easy to refinish too
Did you use the capacitor that came with the bluetooth board and if so where is it installed?
I didn't need it. It's for power smoothing if your power supply has ripple.
How do you know how to add a Bluetooth Circuit board to a 1930s radio and has blown tubes and I need a new plug
I’m actually about to try to do the same thing to my SHP-8, wondering if you could answer a few questions about this for me? I’m pretty new to all of it
1. Where is the pre amp connected to?
2. Do the speakers have to be hooked up in stereo?
3. How did you hook up the new turntable to the old connection? Just go through Bluetooth receiver and hook old turntable wires to it?
4. How does it select between Bluetooth and the record?
5. Any other tips appreciated
Nice but you forgot to show us how you hooked up the power supply did you do it directly into the main power supply or do you have two plugs for that one system
Same question!
So what was wrong with that low sound level amp channel?
From the video it looks like you didn't supply any power to the preamp. Just curious about that.
what happened to the changer?
So I can add bluetooth on a set of studio monitors? Great stuff.
yep
With that board you could technically add bluetooth to anything. Even an old set of PC speakers, heh.
could you have powered the bluetooth off the 5v supply from the rectifier tube?
Yes, but you will have to do something to mitigate noise and add a voltage regulator. Basically you'll have to build a small circuit with regulator and some filtering. The thing here was for me, I was already ordering the bluetooth modules so I figured I'd try out these cheap 5V supplies rather than spending time building circuits. It's hard to justify not spending the $2.40. My time is worth more than that.
Ever try wiring a guitar with a Bluetooth transmitter? Admittedly, probably would be useless for live or recording,but would be cool to practice on tge go without an i rig or vox amplug or etc.
Two questions do you know how to get a battery out of Bluetooth Star Wars tie fighter So I have no idea where to find the opening
No clue.
I wish i could send you my Mesa Boobie DC-3 , nobody can seem to figure out the volume problems :( i have the amp cranked and its almost bedroom volume. They replaced the optical switches and went through the amp but they cant figure it out...150$ for not fixing the issue
Peter Tosh, right on
Where can I get some of your original music?
Google “electric tooth syndrome “
Hey, that was a cool one!
I wonder............can audio be transmitted through that blue tooth? ...Like maybe to a set of Blue tooth speakers? ....I would think so, but didn't see it here.
Thanks for the cool video. It's definitely food for thought.
IPushHard it's a receiver. You can build your own powered Bluetooth speakers with readily available modules and some old tv speakers.
Listening to vinyl from the turntable through Bluetooth removes the tube amplifier from the audio path.
Perhaps the ability to pipe vinyl audio to Bluetooth headphones would be a worthy cause.
For people (like me) who consider the tube amplifier to be the most desirable piece of technology in this console, though, allowing people to play their iPhones or other sources through the tube amplifier is the obvious choice.
I suspect adding a Bluetooth sending unit might require less easily-reversible modifications to the console in order to intercept audio headed to the amplifier and sent it instead to the Bluetooth unit. Then there would be the consideration that you would be running the tubes for hours without actually using them...
Well gents, I DERPED.
Yeah, its a receiver. I got that from the video. Derp.
But I'm not understanding this second reply.
Why would the tubes be removed from the audio path if transmitting Blue tooth audio. Couldnt the transmitter be integrated somewhere near the consoles audio out?...thus after the tubes?
...and as far as having the tubes on for hours? ...naw. Just have everything programmed to shut off after xxxx amount of time... via Blue tooth of course.
That last part was a joke. : )
Why not extend the wires to the LED and put the light that somewhere inconspicuous but visible on the front? I built my own Bluetooth module for my Acura MDX using a similar module and I wish I could see the LEDs sometimes but not really the end of the world.
Adam Payne I keep thinking all the different ways a piece of junk fiber optics cable (an old SPDIF cable or something) could be used to pipe that light to where it’s visible by the user. You could drill the smallest hole, nearly invisible when it’s not lit up.
beautiful, however you didn't say why the one channel was so much lower in volume and how you fixed it...
It was fixed when I rewired the output for stereo. The mismatch was due to the original wiring of the output from the factory. RCA intended you to buy the second extension speaker cabinet for full functionality, apparently.
RCA engineers were bell ends for thinking that way. Should have been stereo in the single cabinet, when you expanded the system, then the switch would make the speakers mono in that cabinet and run the other channel to the extension cabinet. What a waste of that stereo amp as I bet this was a very expensive system, yet most operated in mono, even with stereo records.
I think it was an economic decision. When the purchaser bought just the one unit without the extension cab, everything sounded great...so long as they were playing the old mono records. The minute they tried a new stereo record, they quickly discovered they needed the extension cabinet. CHA-CHING! $$$$
ótimo
I am confused, is there a DAC on the Bluetooth receiver as well ?
Bluetooth is digital and tubes are analog ...
I think its a Bluetooth receiver/controller - he points out the audio connection point on the BT board.
A lot of times I just take the 5V from the heater supply.
Just a few extra mA isn't gonna hurt.
That was what I had planned at first, but I watched other videos of people doing that and they ended up with noise issues they had to solve. For $2.40, I'd rather save my time and get one of these. Just made more sense to me.
The Guitologist . Noise issues? I would just use a low drop linear regulator with some rectifier diodes (probably shottky). That will do the job just fine
Well yeah, that should solve the noise issues. What I mean is you can't just grab 5V off the rectifier, it'll be noisy.
Not to mention being a few hundred volts above ground.....
Russell Hltn . I don't see how. There are ways to ground that properly
LN-BT02 is the unit I use
Brad. Why did you use the phono input for the bluetooth and not one of the other two, tape or tuner. I would think that the phono input would be for phono only. Thanks.
The inputs are identical. There was no RIAA preamp on the phono input. See the other videos in this series. I show the schematic of the inputs.
No RIAA? That's interesting.
So what does the 'pause' do ? I mean it can't be lifting the arm, right ?
haha...that would be cool. No, I'm not sure what those controls do other than allow you to control the playback and pause and volume of the device streaming to bluetooth from the receiving end.
Right, so really it's just a mute I guess. Full control WOULD be fun though :)
mordokch I know some Bluetooth devices can remotely pause the source (in this video the source is his phone), so the Bluetooth standards do contain that functionality somewhere.
Sure but when the source is vinyl it's gonna require some physical engineering to get it to be able to pause, ie by lifting the tone arm. I'm sure bluetooth could handle the command, but something has to be there to act on it. I'm sure someone will bring out a bluetooth deck sooner or later, but it will probably be a bit crap as they seem to be now.
Is there a video missing? As you have already selected the turntable
I had some video talking about the turntable but it didn't really add anything of value. It was just "hey look, a modern turntable", so I cut it.
Did you have to modify phono stage? Ceramic / Crystal cartridges have different output to MM (moving magnet) or does replacement turntable use a ceramic?
Surprised you didn't use a project box for the circuit & transformer and tidied up the cabling as the finished item looks a bit scrappy
I would gone with a REVOX B790 which plays albums the way the master was cut.
Was the track you were playing over Bluetooth one of yours (I noticed it said Electric Tooth Syndrome)? Sounded very Tool influenced and would love to hear more!
Hey Chris. Yeah, that was an ETS track called "Ecclesiastes". It's the final track on this album: ua-cam.com/video/oFvTTVGfg1w/v-deo.htmlm4s
Have you considered 3d printing parts? Like for the turntable, the dry and cracked rubber parts could be scanned with a 3d scanner then printed using long lasting plastics and rubber like filaments. while expensive, I imagine the investment of a printer and a scanner would be made up if you used it enough.
Joe Montgomery I thought the principle which is bringing 3D printing prices down to affordable levels for regular people was growing sales volumes, allowing economics of scale, along with the number of different brands competing for market share keeps pushing the price lower and lower.
As cool as what you describe would be (and I hope we get there someday), I don’t think most people really appreciate all the technical considerations taken into account to successfully produce a physical part which works and has a decent lifespan. Especially when the required properties are more than just shape and rigidity (such as the amount of grip and the amount of elasticity needed for a replacement pinch roller).
Also some of these wheels are of the size and weight that I would have serious concern how the 3D printed parts I come in contact with (which are virtually weightless in comparison) would perform, when weight and inertia-influenced performance would have to be so different.
When a part can do its job properly by simply being reasonably rigid and being a certain shape, the exact plastic you reproduce it with isn’t as critical. But when a part has to be a certain strength, a certain shape, with a certain amount of grip, AND with a certain amount of elasticity, I don’t know that we have even invented materials that can be sent through a 3D printer and still be strong, bouncy, AND elastic. Surely such a technology would be protected by patents, keeping its price out of the reach of dabblers for decades.
Bluetooth trancievers optimally run at 5 VDC @ 2 - 2.4 Amps.
What was the volume imbalance caused by?
Not entirely sure. Had something to do with the way the output was wired from the factory. Rewiring the output in just straight up stereo with the two speaker pairs in this one cabinet solved the issue.
I thought the factory wiring for speaker output looked retarded. It was the pioneering days of stereo though
They obviously wanted to sell you the other speaker cab for full stereo functionality. They figured you'd never notice the lack of stereo if you were using Mono records anyway.
The Guitologist I had a feeling... any time new consumer technology is implemented in a way that makes zero sense from a technical perspective, it almost always has to do with driving sales.
So what did you do, just come off the 2 output transformers for left/right and bypass averything after the transformers ?
THEN--- STEREO "THE SOUND OF THE FUTURE!" NOW---- BLUETOOTH " BEAMING SOUND INTO AROUND & THRU YOUR CRANIUM" CHEERS BRAD ;-P
Next week, I'll show you how to implant the board directly into your medulla.
Yeah. Definitely the way to go. Otherwise, you end up with something akin to spark plug noise in an old car.
Wow that is too old an amplifier without the PCB.
I'm adding Bluetooth to my RCA 'GLOBE TROTTER' portable aluminum cased portable tube radio. They say the first portable radio...
Cheap and Easy? Which part was easy?
Well, you do have to solder. :D
My question is...and this is a mystery to me, WTF is 'COM' AND How is it wired up?
Call Uncle Doug ;)
I bet this is more secure than Alexa.
Why go through all this complicated stuff. Just by a Bluetooth adapter with its own power cord and rca cord and just plug the rca cable into left and right Aux iput in the old amp. That’s it!
😔 AC 💡but guessing no need, silent🤦♀️🤷♀️
LOL.. But if you want REAL HI-FI.. Very nice addition Brad.!! AA++++. Simple Blue Tooth installation.!! This RCA Amp circuit was not built correctly on the output to get the STEREO on the stock 4 speakers.. What a huge failure by RCA. You need an external speaker to get True Stereo or just get Brad to wire it correctly..!!
Are you telling us that at no point did you plug in your guitar and seriously WAIL....IN STEREO!!
Thanks for the inspirationthough, I've got an old radio that could have a new life with Bluetooth.
Not clear
EN = Bluetooth Connection Indicator
maybe you could get prepared and reshoot this vid
NC is normally closed girl hands!!!!! A mans hands tell so much about a person.... Great video very informative ....You still get a thumbs up:)..... Trim those nails and change the oil in your lawnmower.......Bahahaha
I'm a guitar player, dude. I fingerpick and grow my nails for that purpose. I'm continually stunned I have to explain that to an audience that supposedly also plays guitar.
I'll take hifi over a wife any day.
Looks like a big mess to me
PETER TOSH!!!!!