ampage Tube Amps / Music Electronics	For current discussions, please visit Music Electronics Forum.

ampage archive

Vintage threads from the first ten years

previous: joe Thanks, Jim! Can you tell me what ... -- 1/12/2000 4:55 PM

Re: Fender Twin S/F vs B/F

1/12/2000 5:50 PM
Troy	Re: Fender Twin S/F vs B/F Joe: BF'ing involves changing a few resistors in the phase inverter, converting the bias balance pot to a straight bias adjustment, and removing the suppression caps on the power tubes. I don't think I've left anything out, but?? There may be some websites that give you this information or you could buy Gerald Weber's book "Desktop Reference to Vintage Amps" and it has the conversion in there. If you don't know how to do it, you may be better off taking it to a qualified tech (you could hurt yourself (shock)). Troy

1/12/2000 5:50 PM

Troy

Re: Fender Twin S/F vs B/F

Joe: BF'ing involves changing a few resistors in the phase inverter, converting the bias balance pot to a straight bias adjustment, and removing the suppression caps on the power tubes. I don't think I've left anything out, but?? There may be some websites that give you this information or you could buy Gerald Weber's book "Desktop Reference to Vintage Amps" and it has the conversion in there. If you don't know how to do it, you may be better off taking it to a qualified tech (you could hurt yourself (shock)).

Troy

Replies:

joe Are these changes "do-able" with th... -- 1/12/2000 6:46 PM