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.

Wednesday, July 6, 2016

Roger Mayer Voodoo-Bass

Got a request for this one. It's the bass version of the Voodoo distortion. It's a very popular bass effect, especially in Japan apparently, but also sounds great with guitar too. A transistor stage at the input pushes a Rat-like LM308 distortion section, followed by a Big Muff-style tone stack and a simple output buffer. Here's the schematic.


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9 comments:

  1. UnknownJuly 8, 2016 at 9:02 AM

    Thank you so very much for this!

    ReplyDelete
  2. UnknownJuly 11, 2016 at 11:42 PM

    just like the RAT, can i replace the IC for LM741? and remove 22Pf??

    ReplyDelete
  3. elo_musicDecember 28, 2016 at 8:45 PM

    verified ?

    ReplyDelete
  4. danJune 27, 2017 at 12:09 AM

    works perfectly (sound incredible ¿fuzz-drive-distor? i dont know) 100% verified

    ReplyDelete
  5. AzaroNNovember 2, 2017 at 1:20 PM

    Its ok if I replace the BC549C for BC548?

    ReplyDelete
    Replies
    1. Effects LayoutsNovember 2, 2017 at 1:29 PM

      I don't think the 548 is low noise like 549. You could probably get away with some other high gain, low noise NPN though (2N5088, MPSA18, BC550, etc).

      Delete
  6. UnknownDecember 12, 2017 at 6:40 PM

    Is the position of the transistors correct?

    ReplyDelete

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