Home › Forums › Vintage EHX › Classic 1978 ” The Silencer” noise gate / line noise eliminator

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  • April 22, 2024 at 5:34 am #209810
    Frenchfred
    Participant

    Hi everyone, new to this site as of just now. Started to add a few EH pedals to my collection lately and my most recent acquisition is a 1978 The Silencer line noise eliminator. It has been re-worked somewhat and components replaced and looking at the circuit I’m sure they’re not correct . I have an FET replaced where I think a small NPN signal transistor (2n340)(?) should be and various caps of incorrect value as well as input and output jacks disconnected including the power jack. Anyone point me in the direction of a schematic or a photo of the correct components? The only one I found with Google is a two OP amp version using an FET between the two 8 dip chips whereas mine uses a single 14dip LM324N. Any help much appreciated…???

    April 22, 2024 at 6:59 am #209811
    The EH Man
    Moderator

    There’s no difference in using 2 dual opamps and the Lm324 quad opamp. The 2N3403 is probably the part number on the transistor and that’s an FET commonly used by EH at the time. Slightly different parts values are also common.

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