Tools, Tones and Toys for Guitarists
This is a slightly modded Interfax Harmonic Percolator that I made today. It’s an odd little circuit – it can run from clean, a bit overdriven, then into distortion, and finally to overly compressed fuzz madness. The range of sounds are so broad, it’s almost worth setting it up as a dual pedal (which I … Read more
Since I’ve been on a bit of a Harmonic Percolator thing lately, I thought I might do some 0.15″ mojo layouts using Albini / Mad Bean Pepper Spray values. Here’s one built by Sean of Spiller Instruments. Looks great, as do his other builds. INTERFAX HARMONIC PERCOLATOR, ALBINI VALUES – VERO LAYOUTS
Silicon version this time, as it was pretty similar to the hybrid silicon / germanium version. Link to schematic Link to tracing journal on Aion FX CATALINBREAD KARMA SUTURE, SILICON VERSION – VERO LAYOUT VIDEO DEMO
A nice Harmonic Percolator variation from Catalinbread. They’ve kept the bones of the original, and have added an input capacitor blend, as well as a pot to dial in the diodes on the output. Link to schematic Link to tracing journal on Aion FX – and think about buying one from Aion CATALINBREAD KARMA SUTURE, GERMANIUM VERSION … Read more
Haven’t done a tag board build for a while – so here’s a classic. INTERFAX HARMONIC PERCOLATOR HP-1 – TAGBOARD LAYOUT Being tag board, I’ve used 1/2w resistors and axial caps. You could use something more practical (smaller), but if that’s what you want to do, I would recommend using a different layout, as this is … Read more
I would recommend breadboarding this prior to committing to solder. The Interfax Harmonic Percolator is very tweakable, and sometimes takes some adjusting to get it right. There’s pages on the Harmonic Percolator on DIY Stompboxes. INTERFAX HARMONIC PERCOLATOR – POINT TO POINT LAYOUT