Hey all,
For the life of me I can't recall what goes where when installing a trim pot attached to the bias supply with the resistor to ground before the trim pot, as shown in the picture below.
Usually on a Marshall the wiper and "end" of the pot are grounded and the other terminal goes to the resistor of the bias supply.
EDIT: Nevermind. Had my head screwed on backwards seven ways till Sunday. Thanks.
Tweed Bassman Bias Pot Wiring
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Tweed Bassman Bias Pot Wiring
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Re: Tweed Bassman Bias Pot Wiring
Just don't load your output tubes in until you confirm a bias voltage range atleast 4 volts above what your looking for and that it's stable when yanking all the bias circuit parts and wires around !
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Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!