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pio capacitors

  1. Carbsandcaps

    Replacing capacitors in between triodes?

    I’m re-capping a fisher tube amp using pio coupling caps and I’m wondering what about the small caps between the stages of a tube. They’re usually ceramic discs so if I’m replacing the rest of the caps in the signal path shouldn’t I replace these with pio’s? Obviously cost is a factor here but a...
  2. cecilk

    Paper In Oil Caps: Replace On Sight Or Keep?

    I'm working on a cool old tube guitar amp from the 50's that uses paper in oil caps (silver ones labeled "JCP-C-Oil" and yellow ones labeled "NCC"). (The circuit is similar to a Vibro Champ manufactured in Japan for the "Noble" brand) The amp exhibits gnarly signal distortion when I run a clean...
    • cecilk
    • Thread
    • leakage paper caps pio pio capacitors
    • Replies: 33
    • Forum: Tube Audio
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