make your OWN accoustic pickup!!!!

Discussion in 'Guitar Gear Talk Forum' started by shak, Jan 4, 2005.

  1. shak

    shak Harrr!

    hi any accoustics?? wannna turn them into electro accoustic but dont wanna spend a fortune on accoustic pickups?? you come to the right place.!!
    well this is a well known technique but still i will do a little tut. for the people who doesnt know.

    right what you need is:

    a piezo element ( you can get it from electric shop or salvage your own from old alarm clocks, greeting cards or kids toys)
    some shielded coaxial wire
    solder (with the soldering wire)
    and an accoustic guitar..(or electric i wont mind!)

    first solder the coaxial wire on to the piezo element (see the img at the bottom) and then stick that piezo element on your guitar near the bridge (or reach inside the sound hole and stick it under the bridge) ..there, you are done.....
    now its just the matter of connecting the other end of the coaxial cable to the amp or sound card or stereo..and way you go!!

    (this is not my own thing, i read this many years ago at some website..i cant remember what website it was but anyway credits goes to that website)

    i have tried this on my old battered chinese accoustic and it works!!!
    jekyll likes this.
  2. fictional_real

    fictional_real Pyaasi Jawani

  3. deathdr_87

    deathdr_87 Awesome Guitarist

    hows the sound quality?
  4. d_ist_urb_ed

    d_ist_urb_ed Genuflect b*tches!

    Cool post......i dunno if i'll go through all the trouble. Oh well, good post anyway.
  5. shak

    shak Harrr!

    sound quality is pretty good...i have seen piezo's been installed on electrics (in the tremolo spring cavities) to get a sound close to that of accoustic guitar....and the line6 variax uses only piezo as the main pickup!!
  6. blackmamba

    blackmamba Rocker Monk

    Shahrukh - good job. Reminds me of the time when I made myself a distortion pedal...I think it was 1990 or something :)
  7. deathdr_87

    deathdr_87 Awesome Guitarist

    hmmm. now this is getting me interested.... how would a double piezo sound? as in two of them?? would it add to a slightly distorted crucnch tone or would it just sound reall really bad?
  8. shak

    shak Harrr!

    yeah...good idea @deathdr87...unfortunatley i dont have two piezos with me or i would have certainly tried it..but i think that the piezos will cancel out each other's signals...because in parallel one piezo will act as a pickup and the it will drive the other piezo which will act as the speaker..but in series it might just work!! who knows...
  9. deathdr_87

    deathdr_87 Awesome Guitarist

    ive given away my acoustic to my cousin but i really want to try a double piezo

    can someone explain to me how a piezo works (in physics, sound waves and electromagnetism terms)
  10. shak

    shak Harrr!

    the principle on which this thing works is very need to go in there ;)..but..only thing that sets a piezo from a humbucker or single coil apart is that an ordinary humbucker uses a vibrating conductor (string) in a magnetic field to produce signal where as the piezo uses the actual vibrations in the guitar to produce sound!...if you still need more do a search on google..or
  11. zohaib

    zohaib Shredder

    what we call peizo niormally i think i m cionfused tht what is a peizo
  12. deathdr_87

    deathdr_87 Awesome Guitarist

    @shahrukh - i checked it out - it really isnt that complicated

    im assuming u have as good of a cheimstry understanding as me -(*which is alsmot nothing)

    when strains (forces that act on the molecules) are present on the piezo element, the intermolecular bonds gain potential enrgy and the material must lose potential energy - hence a current is formed - the process also works in reverse
  13. shak

    shak Harrr!

    good work @Death makes sense... actually when i said its very complex, i couldn't find easy simple words to explain why this molecular polarization occurs, but you explained it using P.E..thats really good...thanks!!!
  14. zohaib

    zohaib Shredder

    what is a peizo man !!!
  15. shak

    shak Harrr!

    @zohaib piezo is a special crystal which responds to vibrations
  16. deathdr_87

    deathdr_87 Awesome Guitarist

    i was just thinking about this post again - wouldnt u have to put them in parallel for it to work - in series, one will generaten the current and pass it on to the next one which will cancel it out, but in parallel, both will generate current and pass it on to the amp

    i also thoguht of a funny magic trick - connect a piezo to the inside of the guitar, connect the other end to any recorded piece of acoustic muisc and the acoustic's sopund box should sound of the music -i doubt it would work - but it would be a very cool way of producing acoustic sounds along with electric sounds if it did (as in some sort of double sound)
  17. BIG_EVIL

    BIG_EVIL Guitaring Machine

    good thread man.. i like it
  18. apratim.mitra

    apratim.mitra You can call me apro

    Great job Shahrukh ... really ingenious ... did u really come up with this or did someone suggest it to u ??? but whatever the case great post ...
  19. shak

    shak Harrr!

    naaa...i read it somewhere on the all credit goes to the person who thought of it...thanks anyway!!
    @death dr87.....u see that in parallel ..the voltage across each terminal is always equal (its a basic law)..but since the two piezo's in parallel (on a guitar) would never produce same voltage (becuase of resisitances and since they will be placed apart from each other therefore there is a good chance that they will pickup different amplitudes of vibrations) compensate this difference in voltage they will try to cancel out each others output until they get an equilibrium...this will diminish the output signal...but in series since the two will be connected to each other by only ONE wire..hence they won't interact with each other!!..but thats just what i think ...i amy be wrong!
  20. deathdr_87

    deathdr_87 Awesome Guitarist

    ya - so theoreticlly - to get the 'crunch' sound - id need them to cancel each other out, in getting to an equilirium - theyd act like beats right?? - or would that happen in series??

    sorry u seem to know ur stuff quite a bit better than me - but im very confused!

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