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PROJECT NAME
DRYAD
BASED ON
Catalinbread Silver Kiss Mk. 2
EFFECT TYPE
Transparent overdrive
PROJECT SUMMARY
A stripped-down Tube Screamer circuit with an active 3-band EQ which provides amp-like control over
the tone.
Actual size is 2.3" x 1.86" (main board) and 2.3" x 0.86" (bypass board).
DRYAD TRANSPARENT OVERDRIVE
BUILD DIFFICULTY
Easy
DOCUMENT VERSION
1.0.0 (2023-11-24)
1
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Table of Contents
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Related Manuals for aion Dryad Transparent Overdrive
Summary of Contents for aion Dryad Transparent Overdrive
- Page 1 Transparent overdrive 1.0.0 (2023-11-24) PROJECT SUMMARY A stripped-down Tube Screamer circuit with an active 3-band EQ which provides amp-like control over the tone. Actual size is 2.3” x 1.86” (main board) and 2.3” x 0.86” (bypass board). DRYAD TRANSPARENT OVERDRIVE...
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Page 2: Table Of Contents
6 Schematic 10 Document Revisions INTRODUCTION The Dryad Transparent Overdrive is based on the Catalinbread Silver Kiss, originally released in 2007 traced by Aion FX in 2023. There were at least five different versions of the circuit, but this project is based on the Mk. -
Page 3: Parts List
Tantalum capacitor, 044A Can use 4.7uF tantalum here and leave C11 empty. See build notes. 47uF Electrolytic capacitor, 5mm Reference voltage filter capacitor. 100uF Electrolytic capacitor, 6.3mm Power supply filter capacitor. 100n MLCC capacitor, X7R Power supply filter capacitor. DRYAD TRANSPARENT OVERDRIVE... - Page 4 DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. BATT Battery snap 9V battery snap Optional. Use the soft plastic type—the hard-shell type will not fit. 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. DRYAD TRANSPARENT OVERDRIVE...
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Page 5: Build Notes
Due to the low source impedance of the op-amp stages, 1uF is more than enough to pass all useful bass frequencies. However, if you want to stick as closely as possible to the original circuit, use 4.7uF tantalum capacitors for C6 and C12 and omit C5 and C11. DRYAD TRANSPARENT OVERDRIVE... -
Page 6: Schematic
SCHEMATIC 100k 1N5817 100uF 47uF 100n IC1A BASS TL072P 50kB 100n IC1B 200pF TL072P 220n 1N914 50kB GAIN 100kA 100kB TREBLE DRYAD TRANSPARENT OVERDRIVE... -
Page 7: Drill Template
-0.775, y: +1.71 x: 0, y: +1.71 x: +0.775, y: +1.71 ø9/32” ø9/32” ø9/32” VOLUME GAIN x: -0.775, y: +0.41 x: +0.775, y: +0.41 ø9/32” ø9/32” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.20 x: 0, y: -1.20 ø5/16” ø15/32” DRYAD TRANSPARENT OVERDRIVE... -
Page 8: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B DRYAD TRANSPARENT OVERDRIVE... -
Page 9: Wiring Diagram
GND +V +V JACK GND JACK GND GND PCB 125B Shown with optional 9V battery. If battery is omitted, both jacks can be mono rather than one being stereo. Leave the far-right lug of the DC jack unconnected. DRYAD TRANSPARENT OVERDRIVE... -
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. DRYAD TRANSPARENT OVERDRIVE...
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