Bias pot for a Peavy classic 30 or delta blues amp

[pbman1953]

Has anyone done one before?

Easy install?


Worth it? Or just buy the right tube set

[sluckey]

Both look straightforward on paper. Just replace R63 with a 50K pot and replace R64 with a 22K resistor.

[pbman1953]

Is it worth it to do it?

[sluckey]

That depends on how accessible R63 and R64 are. They are likely mounted on a board. This style pot would probably fit the board nicely and be easy to adjust if the board is easily accessible. I used this Bourns trimmer on an old Harvard. Or you could always drill a hole in the chassis for a panel mount pot.

I think it's worthwhile to have a bias adjustment ***IF*** it's not too difficult to actually install the mod. I can't make that call on those Peavys without seeing them.