Akashic Guitar effects circuit lookup
MASSMIDSTONEGAINVOLUME

Enclosure not stated · 5 knobs

Effects Layouts (blog)

Earthbound Audio SupercolliderVerified

Based on the Earthbound Audio Supercollider· 2 other boards clone it

Category
Distortion
Controls
Mass · Mids · Tone · Gain · Volume
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Distortion, Earthbound Audio, Fuzz

From the post

Happy Pi day! The day calls for at least some version of the Big Muff Pi, so here's the Supercollider. I think Cody's asked me to lay this one out like 3 times and I finally remembered to do it. haha This one follows the basic Green Russian Muff with a few component value changes. There's also been a Mids control added to the tone stack and a Mass control that pans between 2 different capacitors at the input. For the Mass control, originals use a B100k pot and a 10n capacitor off lug 2, but Kit Rae suggested using a B150k pot and a 4.7nF capacitor instead (and that's reflected in the layout). His schematic can be found here. There are versions of this pedal out there that include a switch for silicon or LED diodes. I'm assuming that much like the Pharaoh, this option is for the diodes in the 2nd gain stage (1N4001s in the layout below). If you want the clipping switch it won't be hard to wire that off board.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 29 rows

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RefValueNormalizedTypeNotes
Resistors 11
×31M1Mread from the layout by eye
×2470K470kread from the layout by eye
×4100K100kread from the layout by eye
×139K39kread from the layout by eye
×222K22kread from the layout by eye
×312K12kread from the layout by eye
×210K10kread from the layout by eye
×25.1K5.1kread from the layout by eye
×22.7K2.7kread from the layout by eye
×11K1kread from the layout by eye
×3390Ω390read from the layout by eye
Capacitors 7
×3470pF470pread from the layout by eye
×14.7nF4.7nread from the layout by eye
×210nF10nread from the layout by eye
×247nF47nread from the layout by eye
×4100nF100nread from the layout by eye
×210uF10uelectrolytic; read from the layout by eye
×1100uF100uelectrolytic; read from the layout by eye
Diodes 2
×21N41481N4148read from the layout by eye
×31N40011N4001two as clippers, one on the supply; read from the layout by eye
Transistors 4
Q1MPSA18MPSA18read from the layout by eye
Q22N50892N5089read from the layout by eye
Q32N50892N5089read from the layout by eye
Q42N50892N5089read from the layout by eye
Potentiometers 5
MassB150KB150kPotentiometerread from the layout by eye
MidsB50KB50kPotentiometerread from the layout by eye
ToneB100KB100kPotentiometerread from the layout by eye
GainB100KB100kPotentiometerread from the layout by eye
VolumeB100KB100kPotentiometerboard pads labelled Level; read from the layout by eye

Other boards based on the Earthbound Audio Supercollider