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Piezo element microphone

Discussion in 'General Electronics Discussion' started by Pexy, Feb 28, 2016.

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  1. Pexy

    Pexy

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    Feb 21, 2016
    Helo I am going to build piezo element contact microphone for my ukulele. I don't have a guitar amp so is it posible to use a 3.5mm female jack that could be pliged into a desktop speakers so that the speakers amplify the sound or whould it work only with guitar lead wire?
    This are the steos that im going to use to build my mic.
    (http://m.instructables.com/id/Make-a-Contact-Microphone/)
     
  2. Alec_t

    Alec_t

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    Jul 7, 2015
    Depends on the (presumably powered) speaker spec, but you'd probably need a pre-amp between mic and speaker. If the speaker is un-powered then you'd also need an amplifier.
     
  3. Pexy

    Pexy

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    Feb 21, 2016
    I forgot to mention but I would build a pre-amp. The speakers i intend to use are logiteck S200 black. Would this combo work?
     
    Last edited: Feb 28, 2016
  4. Alec_t

    Alec_t

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    Jul 7, 2015
    I'm sure it could be made to work. The Logitech has a mic input, so the pre-amp probably wouldn't need to be high gain.
     
  5. Pexy

    Pexy

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    Feb 21, 2016
    Ok thanks a lot if you have any more tip plz say
     
  6. Alec_t

    Alec_t

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    Jul 7, 2015
    If one face of the piezo disc is in contact with the uke, the other face ideally should be bonded to an inertial mass to maximise sensitivity. That might not be necessary, and of course would make the mic more prominent.
     
  7. Colin Mitchell

    Colin Mitchell

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    Aug 31, 2014
    A piezo diaphragm does not have a very good response. The sound will be terrible. It will sound like a ukulele.
     
    hevans1944 likes this.
  8. Pexy

    Pexy

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    Feb 21, 2016
    Ok thanks for the response
     
  9. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    Just what the world needs: an amplified ukulele.
     
  10. Pexy

    Pexy

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    Feb 21, 2016
    That's right :)
     
  11. BobK

    BobK

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    "Tiptoe, through the tulips..."

    Bob
     
    Pexy likes this.
  12. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    I never cared for the falsetto voice of Tiny Tim or his ukulele, but the (now deceased) fat Hawaiian singer, Israel Kamakawiwo'ole ("Iz"), performing Over the Rainbow accompanied by his playing of the ukulele was both moving and tolerable. You can see and hear the one and only first "official" recording for the Mountain Apple recording label here.
     
    Pexy likes this.
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