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JCM 800 low gain input as resonance control - too much wire lead?

Discussion in 'The Workbench' started by BobVigo, May 18, 2021.

  1. BobVigo

    BobVigo Member

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    I never use the Low Gain input on my JCM 800 clone and rather than drill an additional hole in the chassis, I'm thinking of using the hole there for a resonance control.

    Thing is I'd be running a lot of length of wire across the chassis. I have some shielded wiring I can use but even with that, will the length of wire introduce a lot of noise?
     
  2. Pete Farrington

    Pete Farrington Active Member

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    The resonance control uses the speaker output signal. Putting that next to a high gain input seems problematic.
     
    Guitar-Rocker, tschrama and neikeel like this.
  3. JP2036

    JP2036 Well-Known Member

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    Bad idea.
    There's a way to hardwire it to the speaker out fulltime so no pot is needed.
    Friedman does it on his mods.
    Noticeable improvement.
    Mr. Farrington or others could help.
     
  4. BobVigo

    BobVigo Member

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    Got it as far as the output next to the input.

    As to the hardwire idea: I did a mod that added a fixed depth control but I prefer to have that variable hence the pot.

    I'll have to find a spot on the back panel to add the pot.
     
    Pete Farrington and JP2036 like this.

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