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Fender Musicmaster Bass/Vibro Champ swap

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  • Fender Musicmaster Bass/Vibro Champ swap

    I want to put the power amp section of my MM Bass amp into my Vibro-Champ chassis to make it a 12 watt VC, and convert the MM Bass to a 5F2 single ended, except maybe with a EL34 instead of a 6V6.

    So I will have to swap output trasformers, and take the interstage transformer from the MMB to use in the VC.

    Here's the question: Can I leave the original power transformers in their respective chassis? The PT in the VC is giving approx. 390 volts B+, the PT in the MMB is giving about 290 volts . I assume I can use the hotter B+ in the VC with the MMB power amp section. Can I build a 5F2 in the MMB chassis using the lower voltage MMB transformer? I don't mind sticking with a solid state rectifier since SE class A amps don't "sag" anyway.

    (If the voltage is too low for an EL34 I can stick with a 6v6 in the 5F2, I just thought for the purpose I have in mind I'd like to try a EL34 to see what that sounds like.)
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