Hello good community, I am in a problem, since the stepped potentiometer that comes from stock in my Burson Soloist ha-160 died and I have to change it, the truth is I do not know what type of potentiometer I should put on it, I tried to contact the manufacturer and they told me that no longer have a spare. I have read that it is possible to put an ALPS Blue but the truth is I have no idea, the Burson comes with a cable to connect 3 pins to it, I will upload photos so that you can guide me, I would greatly appreciate them and also what recommendation would you give me.
Attachments
How has it died? Could it just need some contact cleaner?
Burson HA-160 stepped attenuator maintenance - Burson Audio
Burson HA-160 stepped attenuator maintenance - Burson Audio
He died precisely because of a bad cleaning, now I was thinking about putting an ALPS potentiometer on it.
I put a conventional 3-pin 10k linear potentiometer on the volume knob, the minimum stop continues to sound when it shouldn't, as I go up I hear only one side of the hearing aid precisely the left, reaching in the middle levels both are heard and When reaching high volume levels, only one side of the hearing aid is heard again, in this case the right side.
That suggests your pot. connections are incorrect, for some reason. Perhaps it's the common problem when using Burson's products, of not having a proper signal ground for the pot(s). Draw the circuit(s), including any changes or omissions you have made for either channel and compare with the basic volume pot. arrangements and notes in this comprehensive article: Potentiometers (Beginners' Guide to Pots)
Better still, take a pic. or copy of your sketch and post it here (there are instructions at the "insert image" icon for attaching images permanently here) so that we can understand the problem and suggest a solution.
Maybe Burson use shunt volume control, and the series resistors are on the pcb. 3 pin connector is enough in this case.
Mrtoxico - I sent you an e-mail too, but based on description in post #4 are you sure you do not have a balance adjustment pot instead of volume pot ?
I am in the exact same situation as Mrtoxico! I'm looking to replace the stepped attenuator in my Burson Soloist (mk1) with a blue velvet ALPS pot, to make the volpot more usable with my more sensitive headphones (the jump in volume between each step is too big with the stepped attenuator).
I also emailed Burson, and was told they couldn't order the parts to make the replacement ALPS pot for the original Soloist. So I am now looking to find one (or make one?) myself.
If it helps, here are the only pictures I can find of the replacement volpot that Burson made/sold (it's from a sales ad):
SOLD: Burson Soloist Headphone Amplifier / Pre Amplifier - Stereo, Home Cinema, Headphones Components - StereoNET International
I can find what looks to be the right PCB, along with the RK27 volpot, but I'm having a hard time finding a version with the drop-down 3 pin (white) sockets, like the one pictured in the sales ad.
Any help would be much appreciated!
I also emailed Burson, and was told they couldn't order the parts to make the replacement ALPS pot for the original Soloist. So I am now looking to find one (or make one?) myself.
If it helps, here are the only pictures I can find of the replacement volpot that Burson made/sold (it's from a sales ad):
SOLD: Burson Soloist Headphone Amplifier / Pre Amplifier - Stereo, Home Cinema, Headphones Components - StereoNET International
I can find what looks to be the right PCB, along with the RK27 volpot, but I'm having a hard time finding a version with the drop-down 3 pin (white) sockets, like the one pictured in the sales ad.
Any help would be much appreciated!
After some searching, I think I got it (mind you, I have no prior experience in DIY audio):
- Get an ALPS RK27 stereo log pot;
- Get a PCB board like this one: 1pc PCB for ALPS RK27 RK16 Potentiometer 3pin / 4pin Stereo Tinned|Terminals| - AliExpress
- Get some JST HX 2.5mm 3-pin male connectors, like so: JSTXH-3M | JST XH Connector, 2.5mm pitch, 3 pin, Male, Pkg/5
- Solder the ALPS pot in place, and solder one JST HX connector in the "IN" portion of the PCB.
I would then have a complete ALPS volpot module that I could drop in my amp (there's already a wire in the amp with the female 3-pin, currently connected to the stepped attenuator). Is this correct? I am missing anything?
The only question left: which resistance to choose for the ALPS pot? I've tried finding what Burson used in their own Soloist mk1 ALPS module, but I can't find anything.
Would I be fine with a 10k pot? Is there any chance it could be 'incompatible' with the specific design of my amp?
Any help is appreciated! 🙂
- Get an ALPS RK27 stereo log pot;
- Get a PCB board like this one: 1pc PCB for ALPS RK27 RK16 Potentiometer 3pin / 4pin Stereo Tinned|Terminals| - AliExpress
- Get some JST HX 2.5mm 3-pin male connectors, like so: JSTXH-3M | JST XH Connector, 2.5mm pitch, 3 pin, Male, Pkg/5
- Solder the ALPS pot in place, and solder one JST HX connector in the "IN" portion of the PCB.
I would then have a complete ALPS volpot module that I could drop in my amp (there's already a wire in the amp with the female 3-pin, currently connected to the stepped attenuator). Is this correct? I am missing anything?
The only question left: which resistance to choose for the ALPS pot? I've tried finding what Burson used in their own Soloist mk1 ALPS module, but I can't find anything.
Would I be fine with a 10k pot? Is there any chance it could be 'incompatible' with the specific design of my amp?
Any help is appreciated! 🙂