Tube Amp Archive

Thanks, I'll check and post those voltages when I get off work. The amp came with the 5 pin cable, but no footswitch, so I rigged one up with 2 SPST switches and an enclosure. The amp is too quiet to really tell if it's actually activating the reverb or tremolo though. There's no change in volume wh...

So I replaced the filter caps, replaced the power cord, and replaced the 12ax7s with 6eu7s. Now the amp is extremely quiet. When i have the volume dialed it's slightly audible. Any probable causes? Its clear and sounds good, just barely audible.

yes, that's the one

also the reverb is transformer driven

Thanks for all the info, I just got it in the mail and tried to get some sound out of it. I got nothing except for a slight hum and occasional squeaking noise when i rolled up the volume pot. The tubes all lit up and got warm except for the 2 preamp tubes. Upon closer inspection I realized the PO ha...

Hi, I recently bought an 1966 Epiphone Comet (Gibson GA-15RVT) on ebay. The seller described it as having a hum, and probably needing servicing (hasn't seen service in 48 years). I've built a few amp clones, but have never restored one before. I was thinking of replacing the two prong power cord and...