Aion Fusion Manuel utilisateur

FUSION DYNAMIC DISTORTION 1

PROJECT NAME

FUSION

BASED ON

EFFECT TYPE

PROJECT SUMMARY

DOCUMENT VERSION

Suhr®Riot™

A versatile distortion/overdrive noted for its Marshall-like “stack of amps” tone.

Distortion 1.0.0 (2023-03-24)

BUILD DIFFICULTY

Easy

Actual size is 2.3” x 1.86” (main board) and 1.78” x 0.87” (bypass board).

FUSION DYNAMIC DISTORTION 2

TABLE OF CONTENTS

1Project Overview 7Drill Template

2Introduction & Usage 8Enclosure Layout

3-4 Parts List 9Wiring Diagram

5Build Notes 10 Licensing

6Schematic 10 Document Revisions

INTRODUCTION

The Fusion Dynamic Distortion is an adaptation of the Suhr®Riot™ Distortion, originally released in

2009. The Riot is in the family of Marshall-like pedals and is lauded for its high gain “stack of amps” tone.

The Riot was developed as a modified clone of the MI Audio Crunch Box from 2006, which in turn was a

derivative of the Marshall Bluesbreaker along with some inspiration from the Fulltone® OCD®.

The updated version of the Fusion is very similar to the legacy PCB, but with the addition of an internal

slide switch so that 9V and 18V modes can both be used instead of being hardwired for one or the other.

As in the legacy project, we’ve also brought over the internal Presence trimmer from the Crunch Box.

The Riot never had one, though it had two fixed resistors that simulated a 20k trimmer set at around

1:00 (58% rotation). You can always set it to be exactly like the original, but by having the trimmer

available, you have access to an expanded range of tones not found in the original Riot.

USAGE

The Fusion has the typical controls of a 3-knob overdrive:

• Drive controls the amount of gain pushed into the hard-clipping diodes.

• Tone controls the treble response via a passive filter.

• Volume controls the overall output.

There is also one toggle switch, one internal trimmer and one internal slide switch:

• Clipping (toggle switch) selects between three different combinations of clipping diodes.

• Presence (trimmer) adjusts some of the fixed treble cut that comes after the tone control.

• Voltage (slide switch) selects between 9V and 18V power.

FUSION DYNAMIC DISTORTION 3

PARTS LIST

This parts list is also available in a spreadsheet format which can be imported directly into Mouser for

easy parts ordering. Mouser doesn’t carry all the parts—notably potentiometers—so the second tab lists

all the non-Mouser parts as well as sources for each.

View parts list spreadsheet →

PART VALUE TYPE NOTES

R1 1M Metal film resistor, 1/4W

R2 1k Metal film resistor, 1/4W

R3 1k Metal film resistor, 1/4W

R4 10k Metal film resistor, 1/4W

R5 1M Metal film resistor, 1/4W

R6 470R Metal film resistor, 1/4W

R7 470R Metal film resistor, 1/4W

R8 220R Metal film resistor, 1/4W

R9 100k Metal film resistor, 1/4W

R10 100R Metal film resistor, 1/4W

R11 22k Metal film resistor, 1/4W

R12 22k Metal film resistor, 1/4W

RPD 2M2 Metal film resistor, 1/4W Input pull-down resistor.

LEDR 10k Metal film resistor, 1/4W LED current-limiting resistor. Adjust value to change LED brightness.

C1 22n Film capacitor, 7.2 x 2.5mm

C2 33pF MLCC capacitor, NP0/C0G

C3 100pF MLCC capacitor, NP0/C0G

C4 220n Film capacitor, 7.2 x 2.5mm

C5 100n Film capacitor, 7.2 x 2.5mm

C6 100pF MLCC capacitor, NP0/C0G

C7 2.2uF Film capacitor, 7.2 x 5mm

C8 22n Film capacitor, 7.2 x 2.5mm

C9 22n Film capacitor, 7.2 x 2.5mm

C10 1uF Film capacitor, 7.2 x 3.5mm

C11 2.2uF Film capacitor, 7.2 x 5mm

C12 470n MLCC capacitor, X7R Power supply filter capacitor.

C13 10uF Electrolytic capacitor, 5mm Power supply filter capacitor.

C14 47uF Electrolytic capacitor, 5mm Reference voltage filter capacitor.

C15 10uF Electrolytic capacitor, 5mm Power supply filter capacitor.

C16 470n MLCC capacitor, X7R Power supply filter capacitor.

C17 100uF Electrolytic capacitor, 6.3mm Reference voltage filter capacitor.

C18 100n MLCC capacitor, X7R Power supply filter capacitor. Mistakenly labeled C19 on initial release.

FUSION DYNAMIC DISTORTION 4

PARTS LIST, CONT.

PART VALUE TYPE NOTES

D1 1N5817 Schottky diode, DO-41

D2 Ge Germanium diode, DO-7

Any germanium diode should work the same in this circuit, so use

whatever you can find. See build notes for precautions about polarity.

D3 Ge Germanium diode, DO-7

D4 Ge Germanium diode, DO-7

D5 Ge Germanium diode, DO-7

D6 1N914 Fast-switching diode, DO-35

D7 1N914 Fast-switching diode, DO-35

D8 3mm blue LED, 3mm, blue water-clear

D9 3mm red LED, 3mm, red diffused

D10 3mm red LED, 3mm, red diffused

D11 1N5817 Schottky diode, DO-41

D12 1N5817 Schottky diode, DO-41

IC1 JRC4580D Operational amplifier, DIP8

IC1-S DIP-8 socket IC socket, DIP-8

IC2 JRC4580D Operational amplifier, DIP8

IC2-S DIP-8 socket IC socket, DIP-8

IC3 TC1044SCPA Operational amplifier, DIP8 Can also use LT1054.

IC3-S DIP-8 socket IC socket, DIP-8

DRIVE 100kB 16mm right-angle PCB mount pot

TONE 10kC 16mm right-angle PCB mount pot

VOL. 10kA 16mm right-angle PCB mount pot

CLIP DPDT on-on-on Toggle switch, DPDT on-on-on See build notes for correct switch configuration.

VOLT. DPDT slide DPDT slide, micro E-Switch EG1271

LED 5mm LED, 5mm, red diffused

IN 1/4" stereo 1/4" phone jack, closed frame Switchcraft 112BX or equivalent.

OUT 1/4" mono 1/4" phone jack, closed frame Switchcraft 111X or equivalent.

DC 2.1mm DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent.

FSW 3PDT Stomp switch, 3PDT

BATT. 9V 9V battery snap Soft vinyl type. The hard-shell type will not fit.

ENC 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1.

FUSION DYNAMIC DISTORTION 5

BUILD NOTES

Clipping switch

The clipping switch is a DPDT on-on-on toggle. For this type of switch, depending on the manufacturer,

there are two different types of configurations for the center position, which are as follows:

The Fusion requires the Type 2 configuration, which is used by most major manufacturers such as

Taiway. If you’re considering a different brand, make sure to check the configuration of the center

position. Many of the on-on-on switches sold by Tayda or Love My Switches are Type 1 and will not work.

In addition, make sure you’re using an on-on-on switch and not an on-off-on switch, which has the same

appearance and also has 3 positions, but will not work in this circuit.

Germanium diodes

The Riot uses four germanium diodes as part of the clipping combinations. These days, the Russian D9

series are probably the most readily-available NOS germaniums, and will sound great in this circuit. But

be aware that these Russian diodes have the stripe on the anode rather than the cathode, meaning they

should be inserted backwards according to the PCB silkscreen.

This isn’t an issue for circuits like the Klon or Distortion+ that just use two germanium diodes, since it’s

electronically identical whether they’re both the right way or both backwards. However, since these are

in series with other diodes, if the germaniums are reversed in relation to the other diodes then the path

to ground will be blocked and only half the waveform will be clipped.

C19 capacitor

The initial run of Fusion PCBs had the capacitor on the footswitch PCB labeled C19 instead of C18. This

will be fixed in subsequent orders, but for now, just know that the MLCC capacitor on the footswitch

PCB should be 100n (0.1uF).

TYPE 1 TYPE 2

SCHEMATIC

FUSION DYNAMIC DISTORTION 6

GND

2M2

1N5817

100uF

GND

+9V

100n

100kB

10kA

10k

470R

22n

100pF

220n

GND

100n

100pF

GND

33pF

GND

10kC

22n

GND

20k TRIM

22n

GND

1uF

JRC4580

100k

100R

470R

220R

GND

TC1044SCPA

GND

1N5817 1N5817

10uF

470n

GND

470n

GND

22k

10uF

22k

GND

47uF

GND

2.2uF

JRC4580

OUT

RPD

C17

C18

DRIVE

VOLUME

D10

D3D2

TONE

PRESENCE

D4D5

C10

IC2A

IC1B

R10

D7D6

CLIP A

CLIP B

4 5

IC3 D11 D12

C15

C16

C12

R11

C13

R12

C14

VOLTAGE

C11

IC1A

IC2B

GND

FUSION DYNAMIC DISTORTION 7

DRILL TEMPLATE

Cut out this drill template, fold the edges and tape it to the enclosure. Before drilling, it’s recommended

to first use a center punch for each of the holes to help guide the drill bit.

Ensure that this template is printed at 100% or “Actual Size”. You can double-check this by measuring

the scale on the printed page.

Top jack layout assumes the use of closed-frame jacks like the Switchcraft 111X. If you’d rather use

open-frame jacks, please refer to the Open-Frame Jack Drill Template for the top side.

LED hole drill size assumes the use of a 5mm LED bezel, available from several parts suppliers. Adjust

size accordingly if using something different, such as a 3mm bezel, a plastic bezel, or just a plain LED.

x: -0.65, y: +1.71 x: 0.65, y: +1.71

ø9/32” ø9/32”

x: -0.85, y: +0.66

ø1/4”

x: 0, y: +0.66

ø9/32”

x: 0, y: -1.20

ø15/32”

x: -0.775, y: -1.20

ø5/16”

CENTER (0,0)

ø3/8” ø1/2”

0.385”

0.625” 0.625”

ø3/8”

OUT DC IN

125B

VOLUME

CLIPPING TONE

DRIVE

FOOTSWITCHLED

0 1 2

0 1

INCH

FUSION DYNAMIC DISTORTION 8

ENCLOSURE LAYOUT

Enclosure is shown without jacks. See next page for jack layout and wiring.

125B

FUSION DYNAMIC DISTORTION 9

WIRING DIAGRAM

125B

IN +VGND N.C. N.C. OUT

PCB

GND +V +V JACK GND JACK

OUTIN

GND GND PCB

OUT

FUSION DYNAMIC DISTORTION 10

LICENSE & USAGE

No direct support is offered for these projects beyond the provided documentation. It’s assumed

that you have at least some experience building pedals before starting one of these. Replacements and

refunds cannotbe offered unless it can be shown that the circuit or documentation are in error.

All of these circuits have been tested in good faith in their base configurations. However, not all the

modifications or variations have necessarily been tested. These are offered only as suggestions based

on the experience and opinions of others.

Projects may be used for commercial endeavors in any quantity unless specifically noted. No

attribution is necessary, though a link back is always greatly appreciated. The only usage restrictions

are that (1) you cannot resell the PCB as part of a kit without prior arrangement, and (2) you cannot

“goop” the circuit, scratch off the screenprint, or otherwise obfuscate the circuit to disguise its source.

(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 (2023-03-24)

Initial release.

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