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Mystery Caps in my amp??? need help

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  • Mystery Caps in my amp??? need help

    I have a Garnet Rebel II that seems to have two extra caps not on the schematic. They appear original, but in bad shape and need replacing, they also seem to be in a strange section of the preamp. I may have it wrong. Any help clearing this up would be greatly appreciated! Below is a photo of the actual amp and where it appears the extra 100 uF caps are. The one circled in green is the only such cap I can find on the schematic. Thanks for any help in advance!


  • #2
    First off they are 100 pF (picofarad) caps not uF (microfarad).

    They were added to either reduce the possibility of radio signals from entering the pre-amp, or to reduce the possibility of high frequency oscillations in the tube stage. At that value, they will have a minimal effect on the audio portion of the signal.

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    • #3
      Hey Bill thanks a million. I'm still a bit wonky o the pF/uF measurements. It's been driving me crazy! Does it seem like I have them marked at the right place on the schematic?

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