I still have the stock ST-70 driver board from a mid sixties rig that I replaced the paper caps a couple of years ago and never got around to changing out the smaller 390 and 82 pF caps. I would like to do that today but the closest values I have in my stash would be to use either 510 pF or 330 pF for the 390 pF. For the 82 pF, closest I have are 100 pF or 50 pF.
I have already upgraded the power transformer, selenium rectifier, quad cap, bias caps etc. a couple years ago. Amp play great but... one channel plays a little softer than the other. I'll also go through the resistors and see if they are in good shape.
Should I just order the proper ones and be patient or can I make do with what I have.
I have already upgraded the power transformer, selenium rectifier, quad cap, bias caps etc. a couple years ago. Amp play great but... one channel plays a little softer than the other. I'll also go through the resistors and see if they are in good shape.
Should I just order the proper ones and be patient or can I make do with what I have.