Behringer A500 - Buzz at Full Volume

Nadraw · 25th May 2011, 08:28 PM

I have seen other postings (whether on this site or others) with folks who have had this same problem. But of course, now I cannot find them… regardless, I have a very specific question that hopefully somebody can help me out with.

I have a Behringer A500 reference amp that has acquired a “buzz” when the volume knobs are cranked all the way up to full. From what I remember reading, this particular problem has something to do with the pots causing issues elsewhere in the amp (or something, I am clueless). I have tried cleaning them, but no change.

I sincerely don’t care to even have the ability to adjust the volume. The application I use the amp for I am running it wide open and bridged. My thought was to just remove, or bypass the pot all together. So, my question… Can I do that? If so, the pots have a black, white and red wire attached. Which do I jump to run it wide open? I have attached pics of the pot.

Tekko · 25th May 2011, 08:49 PM

Join the white and brown wire. Thew black one is ground.

nigelwright7557 · 25th May 2011, 09:56 PM

Red is input and white is output so join these two together.
Leave the black floating.

25th May 2011, 08:28 PM	#1
Nadraw diyAudio Member Join Date: May 2011	Behringer A500 - Buzz at Full Volume I have seen other postings (whether on this site or others) with folks who have had this same problem. But of course, now I cannot find them… regardless, I have a very specific question that hopefully somebody can help me out with. I have a Behringer A500 reference amp that has acquired a “buzz” when the volume knobs are cranked all the way up to full. From what I remember reading, this particular problem has something to do with the pots causing issues elsewhere in the amp (or something, I am clueless). I have tried cleaning them, but no change. I sincerely don’t care to even have the ability to adjust the volume. The application I use the amp for I am running it wide open and bridged. My thought was to just remove, or bypass the pot all together. So, my question… Can I do that? If so, the pots have a black, white and red wire attached. Which do I jump to run it wide open? I have attached pics of the pot.

25th May 2011, 09:56 PM	#3
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	Red is input and white is output so join these two together. Leave the black floating. __________________ http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software.

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25th May 2011, 08:49 PM	#2
Tekko diyAudio Member Join Date: Jan 2005	Join the white and brown wire. Thew black one is ground.

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