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.

Tuesday, March 31, 2015

Skreddy Mayonaise MkIII

One of the higher regarded Big Muff derivatives out there, the Mk III is Skreddy's latest version of their Mayonaise BMP. On the board is a dip switch which allows you to switch in or out 2 extra capacitors to the tone section. You could wire these as external SPST switches (you'll need 2 of them) if you like. I used my Triangle Big Muff layout as a starting point, but there are several changes so the two aren't interchangeable. But like the Triangle layout, this one is designed for solder-side mounted right angle pots and should fit just fine in a 1590B.


  1. how exactly would i make the internal dip switch into twp external toggle switches?

    1. Use two SPST switches and wire one to the left 2 set of pads for the DIP switch and the other to the right 2 set of pads.