Hi Myles,
Bias, bias, bias.....yet another question...
How much "lee-way, free board, etc." is there when setting the bias (before you damage something, that is). And how much of a change in bias is really significant? Fender gives a bias spec of 30ma for the new Pro Reverb. I am reading through Dan Torres's "Inside Tube Amps" book and his chart gives a bias setting of 25.7ma (voltage of 465, class A/B, 6L6 tube). The lower the ma, the colder the bias, correct? Is 5ma or so either way going to make any difference I can hear? (or damage the tubes/amp?). Dan suggests setting the bias "by ear", that is, set the bias, play through it for a few minutes, then reset/adjust til it sounds right. This makes sense to me, but I don't know the min/max I can go with the adjustment before something is damaged. I have Svetlana 6L6's in now, an upgrade from the stock Sovteks (I noticed an improvement right away).
Thanks Myles,
best regards.