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PROJECT NAME
SOMA
BASED ON
Cornish SS-3 Soft Sustain
EFFECT TYPE
Overdrive
PROJECT SUMMARY
An evolution of the MXR Distortion+ that adds two passive tone-cut controls as well as the classic
Cornish input buffer.
Actual size is 2.3" x 2.43" (main board) and 2.3" x 0.87" (bypass board).
SOMA VINTAGE OVERDRIVE
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.0 (2019-11-15)
1
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Related Manuals for Aion Electronics Soma Vintage Overdrive
Summary of Contents for Aion Electronics Soma Vintage Overdrive
- Page 1 1.0.0 (2019-11-15) PROJECT SUMMARY An evolution of the MXR Distortion+ that adds two passive tone-cut controls as well as the classic Cornish input buffer. Actual size is 2.3” x 2.43” (main board) and 2.3” x 0.87” (bypass board). SOMA VINTAGE OVERDRIVE...
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Page 2: Table Of Contents
11 Document Revisions INTRODUCTION The Soma Vintage Overdrive is adapted from the Pete Cornish SS-3, traced by Aion FX in 2019. Cornish pedals are best known for being extremely expensive. There are two reasons for this. First, the build quality and reliability is unmatched. Second, the mysterious nature of them, partially due to the fact that the circuit is obscured and partially because of the A-list of clients such as Brian May and Pete Townshend. -
Page 3: Parts List
Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W 100R Metal film resistor, 1/4W 150k Metal film resistor, 1/4W 180k Metal film resistor, 1/4W 100R Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W SOMA VINTAGE OVERDRIVE... - Page 4 Available from Tayda Electronics (see parts list spreadsheet). HI CUT 25kB 16mm right-angle PCB mount pot VOL. 10kA 16mm right-angle PCB mount pot TB-BUF 4PDT slide Slide switch, 4PDT E-Switch EG4208 (4mm lever) or EG4208A (6mm lever) SOMA VINTAGE OVERDRIVE...
- Page 5 Switchcraft 111X or equivalent. 1/4" mono 1/4" phone jack, closed frame Switchcraft 111X or equivalent. 2.1mm DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. SOMA VINTAGE OVERDRIVE...
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Page 6: Build Notes
Low Cut potentiometer The 10kB dual potentiometer used by the Low Cut control is an uncommon value and not carried by any of the major distributors. However, Tayda Electronics has it available here with very cheap worldwide shipping. SOMA VINTAGE OVERDRIVE... -
Page 7: Schematic
FROM BUFFER OUT 100n SW1C 150k TO INPUT JACK 220uF 10uF 220uF SW1A GND GND FROM EFFECT OUT SW1B SW1D TO OUTPUT JACK 2N5088 BUFFER OUT LO_CUT A 10kB DUAL TL071P TL071P 470n GND GND 220pF 220pF 100k SOMA VINTAGE OVERDRIVE... -
Page 8: Drill Template
LOW CUT x: -0.65, y: +1.71 x: +0.65, y: +1.71 ø9/32” ø9/32” VOLUME SUSTAIN x: -0.65, y: +0.41 x: +0.65, y: +0.41 ø9/32” ø9/32” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.775 x: 0, y: -1.775 ø5/16” ø15/32” SOMA VINTAGE OVERDRIVE... -
Page 9: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B SOMA VINTAGE OVERDRIVE... -
Page 10: Wiring Diagram
WIRING DIAGRAM N.C. BUF FX GND +V +V JACK GND JACK GND BUF 125B SOMA VINTAGE OVERDRIVE... -
Page 11: Document Revisions
(In other words: you don’t have to go out of your way to advertise the fact that you use these PCBs, but please don’t go out of your way to hide it. The guitar effects industry needs more transparency, not less!) DOCUMENT REVISIONS 1.0.0 (2019-11-15) Initial release. SOMA VINTAGE OVERDRIVE...
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