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OSIRIS DISTORTION/SUSTAINER

1

PROJECT NAME

OSIRIS

BASED ON

EFFECT TYPE

PROJECT SUMMARY

DOCUMENT VERSION

Black Arts Toneworks Pharaoh

Based on the classic Big Muff circuit, this pedal adds a high/low impedance switch, a diode selector 
switch, and a high-end control inside the tone stack.

Distortion / Sustainer, Fuzz

1.0.0 (2019-03-14)

Actual size is 2.3” x 1.86” (main board) and 1.79” x 0.86” (bypass board).

BUILD DIFFICULTY

Easy

Summary of Contents for OSIRIS

Page 1: ...ck Arts Toneworks Pharaoh Based on the classic Big Muff circuit this pedal adds a high low impedance switch a diode selector switch and a high end control inside the tone stack Distortion Sustainer Fu...

Page 2: ...miliar sound while germaniums will be more compressed and gainy but also softer with a more rounded clipping waveform Third a High control has been added to the bass side of the tone control rotation...

Page 3: ...m resistor 1 4W R10 470k Metal film resistor 1 4W R11 100R Metal film resistor 1 4W R12 10k Metal film resistor 1 4W R13 6k2 Metal film resistor 1 4W R14 100k Metal film resistor 1 4W R15 470k Metal f...

Page 4: ...um diode Exact part number is unimportant Any germanium should work here D8 1N34A Germanium diode Exact part number is unimportant Any germanium should work here Q1 MPSA18 BJT transistor NPN TO 92 Q2...

Page 5: ...10k 2k2 1uF 470pF 470n 47n 470pF 47n 47n 470pF 47n 10n 22n 47n 1uF MPSA18 2N5089 2N5089 2N5089 100kB 250kB 100kA VA VA VA VA VA 1N914 1N914 1N914 1N914 47R 39k RPD D1 C14 HIGH 1 2 3 IN OUT C15 R2 R3 R...

Page 6: ...ks like the Switchcraft 111X If you d rather use open frame jacks please refer to the Open Frame Jack Drill Template for the top side LED hole drill size assumes the use of a 5mm LED bezel available f...

Page 7: ...OSIRIS DISTORTION SUSTAINER 7 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B...

Page 8: ...AGRAM 125B IN V GND N C N C OUT PCB IN GND V V JACK GND JACK OUT IN GND GND PCB OUT Shown with optional 9V battery If battery is omitted both jacks can be mono rather than one being stereo Leave the f...

Page 9: ...ly as suggestions based on the experience and opinions of others Projects may be used for commercial endeavors in any quantity unless specifically noted No attribution is necessary though a link back...

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