Akashic Guitar effects PCB lookup
DRIVETONEVOLUMEPRESENCE

125B · 4 knobs

Aion FX

FusionDynamic Distortion

Based on the Suhr Riot· 2 other boards clone it

Category
Distortion
Controls
Drive · Tone · Volume · Presence
Difficulty
Easy
Price
$12.50in stock

From the vendor

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

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.

Note: This project uses a type of capacitor that has been temporarily discontinued by WIMA. Please see our news article about the issue and the substitution spreadsheet for project-specific recommendations. We are stocking a limited supply in the mean time. The build document has not yet been updated to reflect this.

Schematic

The schematic is in the vendor's build document, page 6. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 62 rows

Report a wrong parse
RefValueNormalizedTypeNotes
Resistors 14
R11M1MMetal film resistor, 1/4W
R21k1kMetal film resistor, 1/4W
R31k1kMetal film resistor, 1/4W
R410k10kMetal film resistor, 1/4W
R51M1MMetal film resistor, 1/4W
R6470R470Metal film resistor, 1/4W
R7470R470Metal film resistor, 1/4W
R8220R220Metal film resistor, 1/4W
R9100k100kMetal film resistor, 1/4W
R10100R100Metal film resistor, 1/4W
R1122k22kMetal film resistor, 1/4W
R1222k22kMetal film resistor, 1/4W
RPD2M22.2MMetal film resistor, 1/4WInput pull-down resistor.
LEDR10k10kMetal film resistor, 1/4WLED current-limiting resistor. Adjust value to change LED brightness.
Capacitors 18
C122n22nFilm capacitor, 7.2 x 2.5mm
C233pF33pMLCC capacitor, NP0/C0G
C3100pF100pMLCC capacitor, NP0/C0G
C4220n220nFilm capacitor, 7.2 x 2.5mm
C5100n100nFilm capacitor, 7.2 x 2.5mm
C6100pF100pMLCC capacitor, NP0/C0G
C72.2uF2.2uFilm capacitor, 7.2 x 5mm
C822n22nFilm capacitor, 7.2 x 2.5mm
C922n22nFilm capacitor, 7.2 x 2.5mm
C101uF1uFilm capacitor, 7.2 x 3.5mm
C112.2uF2.2uFilm capacitor, 7.2 x 5mm
C12470n470nMLCC capacitor, X7RPower supply filter capacitor.
C1310uF10uElectrolytic capacitor, 5mmPower supply filter capacitor.
C1447uF47uElectrolytic capacitor, 5mmReference voltage filter capacitor.
C1510uF10uElectrolytic capacitor, 5mmPower supply filter capacitor.
C16470n470nMLCC capacitor, X7RPower supply filter capacitor.
C17100uF100uElectrolytic capacitor, 6.3mmReference voltage filter capacitor.
C18100n100nMLCC capacitor, X7RPower supply filter capacitor. Mistakenly labeled C19 on initial release.
Diodes 12
D11N58171N5817Schottky diode, DO-41
D2GeGEGermanium diode, DO-7
D3GeGEGermanium diode, DO-7Any germanium diode should work the same in this circuit, so use
D4GeGEGermanium diode, DO-7whatever you can find. See build notes for precautions about polarity.
D5GeGEGermanium diode, DO-7
D61N9141N914Fast-switching diode, DO-35
D71N9141N914Fast-switching diode, DO-35
D83mm blue3MM BLUELED, 3mm, blue water-clear
D93mm red3MM REDLED, 3mm, red diffused
D103mm red3MM REDLED, 3mm, red diffused
D111N58171N5817Schottky diode, DO-41
D121N58171N5817Schottky diode, DO-41
ICs 3
IC1JRC4580DJRC4580DOperational amplifier, DIP8
IC2JRC4580DJRC4580DOperational amplifier, DIP8
IC3TC1044SCPATC1044SCPAOperational amplifier, DIP8Can also use LT1054.
Potentiometers 3
DRIVE100kBB100k16mm right-angle PCB mount pot
TONE10kCC10k16mm right-angle PCB mount pot
VOL.10kAA10k16mm right-angle PCB mount pot
Switches 3
CLIPDPDT on-on-onDPDT ON-ON-ONToggle switch, DPDT on-on-onSee build notes for correct switch configuration.
VOLT.DPDT slideDPDT SLIDEDPDT slide, microE-Switch EG1271
FSW3PDT3PDTStomp switch, 3PDT
LEDs 1
LED5mm5MMLED, 5mm, red diffused
Jacks & sockets 6
IC1-SDIP-8 socketDIP-8 SOCKETIC socket, DIP-8
IC2-SDIP-8 socketDIP-8 SOCKETIC socket, DIP-8
IC3-SDIP-8 socketDIP-8 SOCKETIC socket, DIP-8
IN1/4" stereo1/4" STEREO1/4" phone jack, closed frameSwitchcraft 112BX or equivalent.
OUT1/4" mono1/4" MONO1/4" phone jack, closed frameSwitchcraft 111X or equivalent.
DC2.1mm2.1MMDC jack, 2.1mm panel mountMouser 163-4302-E or equivalent.
Hardware 2
BATT.9V9V9V battery snapSoft vinyl type. The hard-shell type will not fit.
ENC125B125BEnclosure, die-cast aluminumCan also use a Hammond 1590N1.

Other boards based on the Suhr Riot