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PROJECT NAME
HELIOSPHERE
BASED ON
Stamps Drive-O-Matic
EFFECT TYPE
Dual-channel distortion
PROJECT SUMMARY
A boutique two-channel drive based on the RAT Distortion, with selectable gain presets and a diode-
clipping switch.
Actual size is 2.3" x 2.14" (main board) and 2.3" x 1.05" (bypass board).
HELIOSPHERE DUAL DISTORTION
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.0 (2023-11-24)
1
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Table of Contents
Related Manuals for aion Heliosphere
Summary of Contents for aion Heliosphere
- Page 1 Dual-channel distortion 1.0.0 (2023-11-24) PROJECT SUMMARY A boutique two-channel drive based on the RAT Distortion, with selectable gain presets and a diode- clipping switch. Actual size is 2.3” x 2.14” (main board) and 2.3” x 1.05” (bypass board). HELIOSPHERE DUAL DISTORTION...
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Page 2: Table Of Contents
The Heliosphere is an exact clone of the Drive-O-Matic based on our trace. Full details are available in the tracing journal. We do recommend some small changes to the base circuit to make it more versatile, which are described in the build notes. -
Page 3: Parts List
Reference voltage filter capacitor. 100uF Electrolytic capacitor, 6.3mm Power supply filter capacitor. 100n MLCC capacitor, X7R Power supply filter capacitor. 1N5817 Schottky diode, DO-41 3mm red LED LED, 3mm, red diffused 3mm red LED LED, 3mm, red diffused HELIOSPHERE DUAL DISTORTION... - Page 4 1/4" phone jack, closed frame Switchcraft 111X or equivalent. 2.1mm DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. BYPASS 3PDT Stomp switch, 3PDT CHANNEL 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. HELIOSPHERE DUAL DISTORTION...
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Page 5: Build Notes
JHS convince you the LM308 is not special, and use the OP07 with a clear conscience! C3 compensation capacitor The OP07 op-amp has an internal slew-rate compensation capacitor while the LM308 does not. C3 (27pF) should be omitted when using the OP07, but it’s required for the LM308 to work properly. HELIOSPHERE DUAL DISTORTION... -
Page 6: Schematic
C10: 10n → 1uF DRIVE 1 R1: 2M2 → 1M 50kA R3: 680R → 560R R4: 100R → 47R R5: 100R → 47R DRIVE 1: 50kA → 100kA DRIVE 2 DRIVE 2: 50kA → 100kA 50kA 2.2uF 22uF HELIOSPHERE DUAL DISTORTION... -
Page 7: Drill Template
CENTER (0,0) DRIVE 1 LED DRIVE 2 LED x: -0.65, y: -0.44 x: +0.65, y: -0.44 ø1/8” ø1/8” BYP. LED x: +0.95, y: -1.10 ø5mm” CHANNEL BYPASS x: -0.765, y: -1.675 x: -0.765, y: -1.675 ø15/32” ø15/32” HELIOSPHERE DUAL DISTORTION... -
Page 8: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B HELIOSPHERE DUAL DISTORTION... -
Page 9: Wiring Diagram
WIRING DIAGRAM GND +V +V JACK GND JACK 125B HELIOSPHERE DUAL DISTORTION... -
Page 10: 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 (2023-11-24) Initial release. HELIOSPHERE DUAL DISTORTION...
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