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 24, 2015
Catalinbread Sabbra Cadabra
This pedal is inspired by Tommi Iommi's classic combination of Laney Supergroup amps and a Rangemaster treble booster. It's not an emulator like the Supergroup pedal I posted a little while ago. If you look at the schematic it actually looks like 2, AMZ mini booster-type stages at its heart, with a transistor-based input stage. It also has a fixed tone array before what I'm guessing is a JFET-based gain recovery stage at the output. The originals have MPF4393 JFETs, but socket and try others with GSD pinout (J201, 2N5457, etc). The layout below says to use 9v, but it can also be run at 18v. I've drawn it so you can use right angle PCB pots, mounted from the solder-side of the board if you want, and it should all fit nicely in a 1590B.