Need A Jmp 2203 Gut Shot

Discussion in 'The Workbench' started by valvehead, Apr 15, 2019.

  1. valvehead

    valvehead New Member

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    ok, ive searched the web for an hour. I need a specific pic. Maybe someone here can help. Amp needs to be a 78-80 JMP 2203........i need a good pic of the Impedance switch inside--with the speaker jacks and wiring . Trying to wire my 80' up now. The switch needs to be the turning style--NOT the press in plug type. Anyone??
     
  2. charveldan

    charveldan Well-Known Member

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    [​IMG]

    My amp is modded the resistor & white cap on the purple wire is a resonance mod. It also has the rotary impedance installed. This was a few years ago.

    [​IMG]

    This is what it looks like now after a Metro loop install.
     
    Last edited: Apr 15, 2019
  3. valvehead

    valvehead New Member

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    Thanks..that switch is different ....hard to see..which wire is going from switch to jacks + ? Or is there one ? Where is the + wire coming from thats on the jack ? I know brown is ground...purple is fb.....blk / yel/ green is 4/8/16
     
  4. charveldan

    charveldan Well-Known Member

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    On mine purple is + [via R/C] & brown is -

    But like i said mine has been modified.
     
    Last edited: Apr 16, 2019

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