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.
Monday, July 24, 2017
JHS Twin Twelve V1
Here's the original Twin Twelve from JHS. It's an emulator of the old Silvertone 1484 amp. Like a lot of amp emulators (including their Superbolt) it uses JFETs and an 18v charge pump. The schematic can be found here, and I added the charge pump from JHS's Superbolt. Set the trimmers to around 9v and the adjust as need be. Pots are board mounted as usual and it should fit in a 125B with top mounted jacks nicely.