Are there any pedals which require no electricity or battery?

Discussion in 'Effects [BG]' started by Thecomedian, Nov 15, 2012.


  1. Thecomedian

    Thecomedian

    Joined:
    Aug 16, 2012
    I believe that the pedal circuits for distortion and other effects require some external power to drive those circuits and boost the signal to keep it from falling below a threshold or something.

    I tried making a simple RC circuit to see if I could make a bass cut pedal, but if I turned the volume knob of the bass below 10, the whole signal would be lost and you'd hear the normal 60hz hum with some fast ticking in the background.

    is this an effect of the resistance of the pot + the external source attenuating the signal too low to be reproduced at the amp? Does this also mean that bass boost/cut on board of your instrument also would require a 9v to pre-amp the signal, otherwise the boost/cut would kill the signal, like in this external setup I created?
  2. tink9975

    tink9975 Supporting Member

    Joined:
    Aug 10, 2006
    Location:
    MoCo, MD
  3. Thecomedian

    Thecomedian

    Joined:
    Aug 16, 2012
    I think the value of my coupling capacitor was far too low.
  4. NKUSigEp

    NKUSigEp Supporting Member

    Joined:
    Jun 6, 2006
    Location:
    Cheviot, OH
    Mountainking Electronics PO Box (passive overdrive)
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  6. metaball

    metaball

    Joined:
    Oct 28, 2011
    Location:
    southern california
    many "Bypass Loop Pedals" require no power.
  7. caeman

    caeman The Root Master Supporting Member

    Joined:
    Sep 17, 2008
    Location:
    Ohio
    The aforementioned Cave Passive Pedals has a line-up of passive pedals for bass. There are various tone control boxes that can found that are passive. I believe some volume pedals are passive. And already mentioned, bypass loop pedals and AB switches.

    You can do slight overdrive without battery or wall-wart. The energy has to come from somewhere, obviously, so certain frequencies are probably being sacrificed to help along the passive overdrive.
  8. Thecomedian

    Thecomedian

    Joined:
    Aug 16, 2012
  9. bongomania

    bongomania Gold Supporting Member

    Joined:
    Oct 17, 2005
    Location:
    PDX, OR
    Disclosures:
    owner, OVNIFX and OVNILabs
    Absolutely; tantalum caps are not expensive, and with any type of components the price drops drastically when you buy in quantities of 100 or more.

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