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JCM gain control cutting volume

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  • JCM gain control cutting volume

    Im trying to put in a jcm 800 preamp into my amp, and ive done everything except the tone stack which i have bypassed for now. However, with the gain control, my volume drops all the way out when i go past half way. I experimented with adjusting the cap across one leg and the wiper, but still the same result. What sorts of things cause this?

  • #2
    did you try to bypass the gain control? what happends then?

    did you put a single cap instead the tone stack? its essential for proper work

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    • #3
      Bypassing the gain gave me a strong signal. Believe me, I have gone part to part, inserting the signal everywhere checking everything, but when i put the gain control in with all else fine it acts up on me.

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