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tone amplifier

  1. M

    Substitute tone pots

    I’m trying to find a new, currently-produced replacement for the tone pots on a 2225 PE-01 tone board. I suspect they’re the same pots used on multiple receiver models. 2-gang 100K linear pots with 11 detent positions. After much searching, I’ve found no drop-in replacement, and no...
    • Matt Giarra
    • Thread
    • alpha bourns knob marantz potentiometer pots tone amplifier
    • Replies: 6
    • Forum: Marantz Audio
  2. runningdog

    2245 P400 tone amplifier right channel not working

    The right channel of this 2245 P400 tone amplifier is not working. This after both channels were rebuilt with new caps and transistors. Here are some observations. When powered up there is a clean signal for a second or two until the voltages rise past correct levels to these levels. The output...
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