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Piezo Question

Posted by Jim138 on July 17, 2009 at 9:34am
Hello, I am building my first CBG. I had a question about connecting the piezo to the 1/4" input jack. Is it possible to solder the red and black wires of the piezo directly to the jack or is the short piece of cable with a ground wire needed?

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Replies

  • Mark Werner July 17, 2009 at 8:15pm
    I read somewhere that it's best to replace the supplied skinny-little wires with a piece of audio cable. Center "hot" lead to the middle part of the piezo, and the braided "ground" to the outside brass part.
    Don't really know if there's any difference using the audio cable, as I've never done them any different than this!

    They seem to work OK...
  • jim July 17, 2009 at 5:22pm
    one of the leads is the ground, completing the circuit.
  • Jim138 July 17, 2009 at 4:35pm
    What are the advantages of having the piezo grounded.
  • toasterburn July 17, 2009 at 1:49pm
    maybe I'm crazy, but I've accidentally soldered the wires backwards and gotten no signal. re-soldered them the other way and they worked fine, so I always do it now.
  • jim July 17, 2009 at 1:32pm
    piezo elements used to generate signal, have no positive and negative , both leads have the same output signal. therefor , it doesnt matter witch way you wire it.one wire to each tab on a mono jack .
  • toasterburn July 17, 2009 at 10:27am
    you can solder directly without grounding, just make sure you get the positive and negative wires straight before you solder.
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