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built A/B switch, has bleed through on off channel

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  • built A/B switch, has bleed through on off channel

    So I built one of these AB switches, but when I have it on the output , the other has a little bleed through.

     

    I use it to go to an amp, and a tuner.  I don't want the tuner in the circuit, hence the AB idea.  But when it's on the tuner out, I can hear a little guitar through the amp.  Any ideas why?

    http://www.beavisaudio.com/projects/Looper-Switcher/A-B-Switch-No-LED.png

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    <div class="bbcode_postedby">
    <img src="images/misc/quote_icon.png" alt="Quote" /> Originally Posted by <strong>SweepLegatto</strong>
    <a href="showthread.php?p=46085637#post46085637" rel="nofollow"><img class="inlineimg" src="images/buttons/viewpost-right.png" alt="View Post" /></a>
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    <div class="message">The noise comes from the cabinet, not from the pots of the front panel.</div>

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  • #2

    I'm not sure why there's some bleed through, but if you make it true bypass with a 3PDT, I think that'd probably fix it.
    http://www.diystompboxes.com/smfforum/index.php?topic=25052.0

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    Comment


    • hcprimerib
      hcprimerib commented
      Editing a comment

      actually, this is supposed to be true bypass

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