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filament supply

  1. Dandy

    Bias supply for Dynaco ST70 replacement power transformer?

    As my mains voltage is 240V and the original Dynaco ST70 is under-rated, I would like to replace it with a massive PT that I have from an unknown 6L6 organ amplifier. It is the exact chassis size and has the right windings for B+, 5V and 6.3V but no winding for the 55V bias supply. There is a...
    • Dandy
    • Thread
    • dynaco st70 filament supply power transformer
    • Replies: 38
    • Forum: Tube Audio
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