Seppuku Fuzz Overloader

Here's another Seppuku FX fuzz box. The sound is kind of in the vein of Devi Ever or Death by Audio. The texture control pans between thick overdrive and over the top fuzz. This one should fit in a 1590a. I included a daughter board for the pots to cut down on some off board wiring.

Seppuku Octave Drone

Here's the Octave Drone from Seppuku FX. Like the Space Fuzz, it too is based on the Rambler. In fact, the Octave Drone is more than half of the Space Fuzz. This has as input switch that goes between a 4.7nf cap and a 100nf cap, much like like the Hot Silicon Tonebender. You could easily replace the switch with a B100k pot (much like the Basic Audio Scarab Deluxe), to pan between the 2 caps. You can mount the pots on the component side to have the board mounted vertically inside your enclosure if you so choose. Should fit in a 1590B without issue.

Seppuku Space Fuzz

The Space Fuzz is a a loud, in your face fuzz/octave box from Japan builder Seppuku FX. It's partially based on the Tim Escobedo Rambler, with a couple other stages thrown in (including the Bazz Fuss). It has a pretty wide range of tones and can get a little splattery at the end of sustained notes. This layout is based on original PCB traced on FSB, but tidied up and changed to include power filtering and polarity protection, and will fit in a 1590B (originals are in 1590BBs). Originals use ceramic capacitors and that's reflected in the layout as well. Seems like just about any NPN silicon transistor will work, but the 2N2222 reportedly is the quietest. As always, socket and experiment.

Edit: John K over on FSB seems to have verified this layout using 2N5088s and a LM386N-3 with very little noise. If the effect does seem loud enough, try using a 1N4148 in place of the 1N34.