Unverified
Seamoon Funk Machine
The Funk Machine is a filter effect that can be used on either bass or guitar (or synth, Rhodes, harmonica, etc). It’s also like an auto wah, given that the wah effect is controlled by the string attack of the player. Original units used 2, LM741 chips, but I’ve laid it out for an LM1458 … Read more
Madbean Flabulanche / Snow Day Overdrive-Compressor
Here are Jon Patton’s original Snow Day Overdrive and Madbean’s modified version (Flabulanche). You can find all infos on Brian’s website: http://www.madbeanpedals.com/projects/Flabulanche/Flabulanche_2015.pdf Jon Patton’s video: – 2n5457s are biased around 12V.
Colorsound 3-Knob ToneBender Reissue
I was trolling Google Images the other night looking for schematics and I stumbled across this. I think the only thing this reissue has in common with an original is the enclosure and graphics. It uses a single opamp with soft clipping and a Big Muff-style tone stack. If you use 9mm pots you could … Read more
Madbean Zero Point SDX2
Madbean’s updated version of his great Zero Point SDX delay pedal. You can find all infos on this circuit or buy one of his PCBs here: http://www.madbeanpedals.com/projects/index.html There are no videos available at the moment.
Run Off Groove 3 Legged Dog
Got a bunch of CD4049UBE chips left over from building Red Llamas? Here’s something else you can do with them. You might need to play with the the value of the 8.2k resistor going to the drain of the J201 to make sure you’re getting to around 4.5v there. Also if you encounter squealing or … Read more
Red Fuzz
For #fuzzfriday, here’s the Red Fuzz, designed by Robin Tomtlund. It’s made up of 2 stages: the first is based around a single op amp with LEDs is the feedback loop creating clipping. The second is a simple FET-based boost/buffer. Much like a RAT, but with different clipping. The schematic and some sound samples can … Read more
Shin Ei OB-28 Octave Box
Here’s a weird one for you–the Shin Ei Octave Box. It’s apparently an all analog clean octave down effect. I’m not going to pretend to understand how it works, but there are a lot of transistors. Originals used 2SC644 and 2SC666 transistors, which I think were in the massive TO-3 package. I’ve drawn the layout … Read more
Kay F-1 Fuzz Tone
Here’s the layout for #fuzzfriday! The F-1 Fuzz Tone is one of Kay’s budget effects from the 60s housed in a plastic treadle pedal. Essentially it’s the poor man’s Univox Super Fuzz. The treadle would control the Tone pot, with the overall level of the effect fixed at max. This isn’t that big of an … Read more
Ibanez Dirt Box
Here’s a rare one from the 70s by Ibanez. It was originally marketed as the OD-850 Overdrive II (not to be confused with the OD-855). But since the nature of this pedal is more distortion/fuzz territory, it wasn’t a great name and it was changed to the Dirt Box. Whatever you want to call it, … Read more