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aion Blaze Manual

Overdrive with bass cut
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PROJECT NAME
BLAZE
BASED ON
Amptweaker Tight Drive
EFFECT TYPE
Overdrive with bass cut
PROJECT SUMMARY
An original drive pedal design from amp guru James Brown, the designer of the Peavey 5150 and JSX
amplifiers.
Actual size is 2.3" x 2.42" (main board) and 1.78" x 0.86" (bypass board).
BLAZE DYNAMIC OVERDRIVE
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.0 (2023-11-24)
1

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Summary of Contents for aion Blaze

  • Page 1 1.0.0 (2023-11-24) PROJECT SUMMARY An original drive pedal design from amp guru James Brown, the designer of the Peavey 5150 and JSX amplifiers. Actual size is 2.3” x 2.42” (main board) and 1.78” x 0.86” (bypass board). BLAZE DYNAMIC OVERDRIVE...

  • Page 2: Table Of Contents

    The overall concept is similar, though: pre-drive bass cut, high-threshold zener clipping, and a Big Muff-style tone stack. The Blaze is a close adaptation of the Tight Drive based on our trace, only omitting the SideTrak effects loop that is engaged when the pedal is activated.

  • Page 3: Parts List

    Metal film resistor, 1/4W LEDR Metal film resistor, 1/4W LED current-limiting resistor. Adjust value to change LED brightness. 47pF MLCC capacitor, NP0/C0G 100n Film capacitor, 7.2 x 2.5mm 100pF MLCC capacitor, NP0/C0G Film capacitor, 7.2 x 2.5mm BLAZE DYNAMIC OVERDRIVE...
  • Page 4 TONE 10kA 16mm right-angle PCB mount pot Audio (log) taper. VOLUME 10kB 16mm right-angle PCB mount pot Linear taper. 1/4" mono 1/4" phone jack, mono 1/4" mono 1/4" phone jack, mono 2.1mm DC jack, 2.1mm panel mount BLAZE DYNAMIC OVERDRIVE...
  • Page 5 PARTS LIST, CONT. PART VALUE TYPE NOTES 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. BLAZE DYNAMIC OVERDRIVE...

  • Page 6: Build Notes

    • To reduce brightness, turn the tone control all the way up and then select a value for C19 that corresponds with the amount of treble you want to cut. For example, 22n will cut above 7.2kHz, or 47n will cut above 3.4kHz. BLAZE DYNAMIC OVERDRIVE...

  • Page 7: Schematic

    SCHEMATIC 1N5817 100uF 22uF 100n 22uF GND GND 22uF 22uF IC2A IC1B TL072P 100n TL072P 100n 220n 220n IC1A TL072P 100pF 47pF 47pF 22uF 100pF 1N4733A 1N4733A IC2B TL072P 100k 500kA OMIT DRIVE 100n 100n OMIT BLAZE DYNAMIC OVERDRIVE...

  • Page 8: Drill Template

    TONE DRIVE x: -0.65, y: +1.71 x: +0.65, y: +1.71 ø9/32” ø9/32” TIGHT VOLUME x: -0.65, y: +0.41 x: +0.65, y: +0.41 ø9/32” ø9/32” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.775 x: 0, y: -1.775 ø5/16” ø15/32” BLAZE DYNAMIC OVERDRIVE...

  • Page 9: Enclosure Layout

    ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B BLAZE DYNAMIC OVERDRIVE...

  • Page 10: Wiring Diagram

    WIRING DIAGRAM NC OUT GND +V +V JACK GND JACK GND GND PCB 125B BLAZE DYNAMIC OVERDRIVE...

  • Page 11: 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. BLAZE DYNAMIC OVERDRIVE...