aion ZELUS Quick Start Manual
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aion ZELUS Quick Start Manual

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PROJECT NAME
ZELUS
BASED ON
Blackout Effectors Musket Fuzz
EFFECT TYPE
Distortion / Sustainer, Fuzz
PROJECT SUMMARY
Based on the classic Big Muff circuit, this pedal adds a boost to drive the input, a bass blend capacitor,
and a midrange control inside the tone stack.
Actual size is 2.3" x 1.86" (main board) and 1.79" x 0.86" (bypass board).
ZELUS DISTORTION/SUSTAINER
BUILD DIFFICULTY
Easy
DOCUMENT VERSION
1.0.0 (2019-03-14)
1

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Summary of Contents for aion ZELUS

  • Page 1 Based on the classic Big Muff circuit, this pedal adds a boost to drive the input, a bass blend capacitor, and a midrange control inside the tone stack. Actual size is 2.3” x 1.86” (main board) and 1.79” x 0.86” (bypass board). ZELUS DISTORTION/SUSTAINER...

  • Page 2: Table Of Contents

    7 Drill Template INTRODUCTION The Zelus Distortion/Sustainer is adapted from the Blackout Effectors Musket Fuzz version 2, a Big Muff-based circuit with a few modifications. First, an input boost has been added to the front of the circuit. This boost is adapted from the Electro- Harmonix LPB-1 and allows you to drive the input harder than the initial gain stage in a stock Big Muff.

  • Page 3: Parts List

    Metal film resistor, 1/4W 470k Metal film resistor, 1/4W 100k Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W Metal film resistor, 1/4W LEDR Metal film resistor, 1/4W LED current-limiting resistor. Adjust value to change LED brightness. ZELUS DISTORTION/SUSTAINER...
  • Page 4 BJT transistor, NPN, TO-92 100kA 16mm right-angle PCB mount pot FOCUS 250kB 16mm right-angle PCB mount pot SUS. 100kA 16mm right-angle PCB mount pot MIDS 100kA 16mm right-angle PCB mount pot TONE 250kB 16mm right-angle PCB mount pot ZELUS DISTORTION/SUSTAINER...
  • Page 5 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. ZELUS DISTORTION/SUSTAINER...

  • Page 6: Schematic

    SCHEMATIC 1N5817 100uF 100n 100kA MIDS 1N914 1N914 1N914 1N914 100n 100n 470pF 2N5089 470pF 470pF 470k 470k 470k 2N5089 2N5089 2N5089 2N5089 ZELUS DISTORTION/SUSTAINER...

  • Page 7: Drill Template

    +0.775, y: +1.71 ø9/32” ø9/32” ø9/32” VOLUME FOCUS PREGAIN x: -0.775, y: +0.41 x: +0.775, y: +0.41 x: 0, y: +0.41 ø9/32” ø9/32” ø9/32” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.20 x: 0, y: -1.20 ø5/16” ø15/32” ZELUS DISTORTION/SUSTAINER...

  • Page 8: Enclosure Layout

    ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B ZELUS DISTORTION/SUSTAINER...

  • 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. ZELUS DISTORTION/SUSTAINER...

  • 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 (2019-03-14) Initial release. ZELUS DISTORTION/SUSTAINER...

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