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PROJECT NAME
NEREUS
BASED ON
Catalinbread Octapussy
EFFECT TYPE
Octave-up fuzz
PROJECT SUMMARY
A vintage-inspired octave-up fuzz in the tradition of the Roger Mayer Octavia.
Actual size is 2.3" x 1.86" (main board) and 1.78" x 0.86" (bypass board).
NEREUS OCTAVE FUZZ
BUILD DIFFICULTY
Easy
DOCUMENT VERSION
1.0.0 (2023-11-24)
1
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Table of Contents
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Summary of Contents for aion Nereus
- Page 1 Easy EFFECT TYPE DOCUMENT VERSION Octave-up fuzz 1.0.0 (2023-11-24) PROJECT SUMMARY A vintage-inspired octave-up fuzz in the tradition of the Roger Mayer Octavia. Actual size is 2.3” x 1.86” (main board) and 1.78” x 0.86” (bypass board). NEREUS OCTAVE FUZZ...
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Page 2: Table Of Contents
The Nereus is directly based on our trace of the Octapussy. The only change we made was to reverse the orientation of the output volume control, which was called “Attenuation” on the original and reduced the volume as it was turned up—most likely a marketing decision on their part to make it seem louder. -
Page 3: Parts List
Can also use electrolytic (polarity marked on PCB). 2.2uF Film capacitor, 7.2 x 5mm Can also use electrolytic (polarity marked on PCB). Film capacitor, 7.2 x 2.5mm 100uF Electrolytic capacitor, 6.3mm Power supply filter capacitor. 100n MLCC capacitor, X7R Power supply filter capacitor. NEREUS OCTAVE FUZZ... - 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. NEREUS OCTAVE FUZZ...
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Page 5: Build Notes
The original Octapussy has a knob labeled “Attenuation”, which is nothing more than a reversed volume knob that reduces the output as it’s turned up. We have reversed this in the Nereus so it acts as a traditional volume control. -
Page 6: Schematic
SCHEMATIC 100R 1N5817 100uF 100n 2.2uF 1N914 PN2222A PN2222A 680k 1N914 PN2222A 2.2uF 680n 150k 22uF 22uF NEREUS OCTAVE FUZZ... -
Page 7: Drill Template
INCH 0.625” 0.625” ø3/8” ø3/8” ø1/2” VOLUME GAIN x: -0.65, y: +1.71 x: 0.65, y: +1.71 ø9/32” ø9/32” BODY x: 0, y: +0.66 ø9/32” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.20 x: 0, y: -1.20 ø5/16” ø15/32” NEREUS OCTAVE FUZZ... -
Page 8: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B NEREUS OCTAVE FUZZ... -
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. NEREUS OCTAVE FUZZ... -
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. NEREUS OCTAVE FUZZ...
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