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Stepped Attenuator to replace Potentiometer.

Hello: We have a set of Wolcott Monoblocks, for which I am researching replacing the volume pots with something like a DACT stepped attenuator for each mono block. The problem is that I can not seem to find a compatible attenuator that could replace the stock 25 meg ohm pots.

The circuitry is point-to-point wiring, powering eight 6ca7, two 6dw8, and two 12at7 tubes per side. It might be more of a hassle to mess with getting around the stock pots to substitute attenuators; however, I'm not an engineer and would therefore appreciate your informative advice and suggestions. Thank you.
somut

Showing 2 responses by albertporter

albertporter's avatar
albertporter
4,927 posts
 
What pot? How old is this Wolcott? I've been involved with this company for many years and there is no gain control I'm aware of.

Are you referring to the feedback control? If yes, that does not serve the same function.
albertporter's avatar
albertporter
4,927 posts
 
Now I understand, that's why I ask how old. I knew anything in the last 20 years had no volume pot.

Good call on the impedance issue, that's mandatory to maintain. I'm not qualified to tell you what to change to make it right. Have you tried to contact Wolcott audio for advice? Hank is very bright.
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