This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Thursday, March 12, 2015

Lovepedal Karl (2-knob version)

The Karl is essentially a modified Tim Escobedo Tripple Fuzz, basing it's sound around an NPN/PNP transistor network known as a "non-selective frequency tripler." I modified the power section a little bit. The original has an unnecessary 47µ cap at 9v input before the 330Ω resistor which I eliminated. I also moved the anti-popping pull down resistor to before the Intensity pot (the original had it after) and it might not even be necessary at all. But better safe than sorry.



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7 comments:

  1. UnknownNovember 27, 2016 at 10:28 PM

    You can mark this one as verified. I built the pcb and I like it a lot. Great sounding fuzz. Once again thanks for the layout!

    ReplyDelete
  2. IvMFebruary 3, 2017 at 5:52 PM

    Any idea of how is designed the tone control in the new version? I'll try the BM tone stack.

    ReplyDelete
    Replies
    1. IvMFebruary 3, 2017 at 6:02 PM

      Answer to myself, maybe it help somebody :-)
      I found out on the net that the tone pot in the new version is a simple treble roll off control.
      BMP tone stack would be a better choice I guess.

      Delete
  3. IvMApril 25, 2017 at 7:29 PM

    Is 1N5819 a good substitute for BAT46?

    ReplyDelete
    Replies
    1. Effects LayoutsApril 25, 2017 at 8:54 PM

      Not really. But just about anything will work there. Socket and experiment with what you have

      Delete
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  5. ZZOYDJuly 31, 2020 at 4:59 PM

    tried to use Ge for Q2Q3-any chances for good sound! Silicon-good.

    ReplyDelete

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