Tube Amp Archive

I think the problem was in the preamp tube from the vibrato channel and so replacing it with the tube from the normal channel fixed the issue. i think the normal channel most likely just has a bad volume pot and so the bad tube, that was originally in the vibrato channel exhibits the same problems a...

So I was thinking about it, and it seemed to be that the signal was shorting to output, and bypassing the tone controls, as until the volume knob reached about 2 1/2 the tone controls did not effect it and the signal sounded very muddy. The normal channel as I had mentioned previously was behaving n...

Thanks, I have some Deoxit Fader Lube on the way. I was poking around a bit more and it seems that the previous owner may have tried to do this to it. Who knows. There is a mod suggested by Torres and Mike Thompson. It involves: 1. Change the plate resistors from 100k to 220k. Bypass the one on the ...

I recently acquired a '66 Super Reverb, it sounded great in the shop, however upon getting it home and checking it out I noticed that the Normal Channel passes signal only when the volume is turned to upwards of 4, the taper which would normally be spread across that entire range seems to between 4-...