Akashic Guitar effects circuit lookup
SMOTHERLOWMIDHIGHVOLUME

Enclosure not stated · 5 knobs

Dirtbox Layouts

Holy Island Audio Cannibal Pride Drone SynthVerified

Based on the Holy Island Audio Cannibal Pride Drone Synth

Controls
Smother · Low · Mid · High · Volume
Build
Vero· 20×22· 28 cuts, 13 links
Layout
Verified · Dirtbox Layouts marks it as built and working
Tags
Chris Stelloh, Drone, Holy Island Audio, Noise, Oscillator, Synth

From the post

Chris have done it again...

"Gwion of Holy Island Audio builds awesome stuff and, included in the package if you purchased the debut release from Gwion's band, Smothering, is a DIY PCB for a three oscillator drone synth called the Cannibal Pride. This is that synth, and it sounds KILLER - keep in mind that, as this is a sound source and not an effect, there is of course, no input." build doc + schematic: https://docs.google.com/document/d/1NSEFkj_Flshn4vLBJO7MGp9VPzflK6Mr4xwT9EP3oMo/edit?usp=sharing

Smothering: https://smotheringnoise.bandcamp.com/album/cannibal-pride

Video about this circuit: https://youtu.be/A1qYyTmdN6A?si=I2XEBzEkYL_AlnNu

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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.

Parts list 31 rows

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RefValueNormalizedTypeNotes
Resistors 9
×51k1kread from the layout by eye
×710k10kread from the layout by eye
×4100k100kread from the layout by eye
×1100Ω100read from the layout by eye
×1220k220kread from the layout by eye
×12k22.2kread from the layout by eye
×147k47kread from the layout by eye
×1470k470kread from the layout by eye
×1??LED resistor, value not given; read from the layout by eye
Capacitors 9
×1100pF100pread from the layout by eye
×1470pF470pread from the layout by eye
×122nF22nread from the layout by eye
×147nF47nred film box cap, sets an oscillator frequency; read from the layout by eye
×1100nF100nread from the layout by eye
×1220nF220nred film box cap, sets an oscillator frequency; read from the layout by eye
×41uF1uone red film box cap (sets an oscillator frequency), three cream box caps; read from the layout by eye
×147uF47uelectrolytic; read from the layout by eye
×1100uF100uelectrolytic; read from the layout by eye
Diodes 4
D11N58171N5817read from the layout by eye
D21N58171N5817read from the layout by eye
D31N58171N5817read from the layout by eye
D41N58171N5817read from the layout by eye
Transistors 1
Q12N50882N5088read from the layout by eye
ICs 2
IC1CD40106CD40106read from the layout by eye
IC2TL072TL072(or similar); read from the layout by eye
Potentiometers 5
SmotherB10KB10kPotentiometerread from the layout by eye
LowB1MB1MPotentiometerread from the layout by eye
MidB500KB500kPotentiometerread from the layout by eye
HighB500KB500kPotentiometerread from the layout by eye
VolumeA100KA100kPotentiometerread from the layout by eye
Switches 1
SWSPDT on/onSPDT ON/ONtoggle; read from the layout by eye