aion Nimbus Manual
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aion Nimbus Manual

Dynamic overdrive
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PROJECT NAME
NIMBUS
BASED ON
Maxon
®
OD-820 Overdrive Pro
EFFECT TYPE
Overdrive
PROJECT SUMMARY
A modern reimagining of the classic Tube Screamer circuit, featuring a dual drive/blend control adapted
from the Klon Centaur.
Actual size is 2.3" x 1.86" (main board) and 1.78" x 0.86" (bypass board).
NIMBUS DYNAMIC OVERDRIVE
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.0 (2021-03-19)
1

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Summary of Contents for aion Nimbus

  • Page 1 1.0.0 (2021-03-19) PROJECT SUMMARY A modern reimagining of the classic Tube Screamer circuit, featuring a dual drive/blend control adapted from the Klon Centaur. Actual size is 2.3” x 1.86” (main board) and 1.78” x 0.86” (bypass board). NIMBUS DYNAMIC OVERDRIVE...

  • Page 2: Table Of Contents

    6 Drill Template INTRODUCTION The Nimbus Dynamic Overdrive is an adaptation of the Maxon OD-820 Overdrive Pro, first released in 2004 as part of Maxon’s Vintage Series alongside the AD-999 Analog Delay, DS-830 Distortion Master, PH-350 Rotary Phaser, and a few others.

  • Page 3: Parts List

    Film capacitor, 7.2 x 2.5mm Film capacitor, 7.2 x 3.5mm 100pF MLCC capacitor, NP0/C0G 100n Film capacitor, 7.2 x 2.5mm 220n Film capacitor, 7.2 x 2.5mm Film capacitor, 7.2 x 2.5mm 220n Film capacitor, 7.2 x 2.5mm NIMBUS DYNAMIC 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. NIMBUS DYNAMIC OVERDRIVE...

  • Page 5: Schematic

    SCHEMATIC 1N5817 100uF 100uF 100n TC1044SCPA PWR_GND PWR_GND 47uF 470n 100uF PWR_GND DRIVE_B 250kB 1N914 100n 100pF 10pF 100k 20pF IC1A IC2A 560R 2N5457 JRC4558D IC1B JRC4558D 220n JRC4558D 100kA VOLUME IC2B JRC4558D 220n NIMBUS DYNAMIC OVERDRIVE...

  • Page 6: Drill Template

    INCH 0.625” 0.625” ø3/8” ø3/8” ø1/2” VOLUME DRIVE x: -0.65, y: +1.71 x: 0.65, y: +1.71 ø9/32” ø9/32” TONE 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” NIMBUS DYNAMIC OVERDRIVE...

  • Page 7: Enclosure Layout

    Solder it like you would if they were normal pads, but bend the small set of pins forward slightly so they make contact with the edge of the pads. The solder will flow easily into the half-holes. 125B NIMBUS DYNAMIC OVERDRIVE...

  • Page 8: 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. NIMBUS DYNAMIC OVERDRIVE...

  • Page 9: 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 (2021-03-19) Initial release. NIMBUS DYNAMIC OVERDRIVE...

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