Hey guys, been away for a while. After a couple shitty years I'm getting the call to start some building again
I picked this amp up recently and it's virtually stock except the negative feedback resistor and a replaced tube socket.
I'm going to recap the amp and replace the crappy socket, and add a PPIMV, probably in the spot where the polarity switch resides. Any issues with that location? I'll be using shielded wire of course.
Mark
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That's a nice looking amp so clean inside , I agree with the master volume makes them more useable. I think I would play the amp with original caps for a while and see how it sounds, I only change what's needed for me the more original amps are the better.
lovetone wrote:That's a nice looking amp so clean inside , I agree with the master volume makes them more useable. I think I would play the amp with original caps for a while and see how it sounds, I only change what's needed for me the more original amps are the better.
It's really not a good idea to leave the original filter caps in there. They're a good 45 years old if their original. You can bring it up on a variac and see if it draws excessive current or test them with an ESR meter. However even if their still good they *will* fail at some point and when they do, that could cost you your PT. Better safe than sorry IMO. Having to replace a PT and filter caps will harm the value of the amp a lot more than just replacing the caps, not mention being much more expensive.
