Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => EZ Board postings => Topic started by: Geezer on June 17, 2005, 08:16:00 pm
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Hoffman Amplifiers
> Tube Amp Building - Tweaks - Repairs
> another A/B/Y schematic
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jc
I only work on Fender's
Posts: 667
(1/30/04 7:32 pm)
another A/B/Y schematic
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This questions seems to come up every now and then so here is yet another A/B/Y
Edited by: jc at: 1/30/04 7:33 pm
boogielicious
Junior tube assistant
Posts: 51
(1/31/04 9:20 am)
Re: another A/B/Y schematic
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Thanks JC.
Scott
GroundhogKen
Forum Moderator
Posts: 2237
(1/31/04 10:56 am)
Re: another A/B/Y schematic
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The top picture's input jack looks funny to me. Is the sleeve carrying the signal? Or is it mislabeled?
I assume the idea is to have the battery circuit enabled when you plug a standard 1/4" plug into the stereo jack--the ring gets tied to the grounded sleeve.
Ken
jc
I only work on Fender's
Posts: 668
(1/31/04 11:20 am)
Re: another A/B/Y schematic
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I think you are right Ken. The top A/B is mislabelled. The S is on the wrong side of the jack. They have basically labelled the tip T & S.
It should look like this
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