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DISTORTIONTREBLEOUTPUT

125B · 3 knobs

Aion FX

TaranisDynamic Distortion

Based on the Mr. Black Thunderclaw· 1 other board clones it

Category
Distortion
Controls
Distortion · Treble · Output
Difficulty
Easy
Price
$12.50in stock

From the vendor

The Taranis Dynamic Distortion is an adaptation of the Mr. Black Thunderclaw, originally released in 2014 and traced by Aion FX in 2024.

The Thunderclaw is not strictly based on any existing pedal, though it does use several building blocks from other distortion designs. The input section and clipping arrangement resembles a RAT with a clean op-amp boost into back-to-back diodes to ground. The two cascaded tone controls are similar to single-band Baxandalls and bear some resemblance to the Tube Screamer tone control, both of which have boost and cut capabilities.

This is followed by an active volume control, with a potentiometer controlling the gain of an inverting op-amp stage, providing a constant output impedance. All of this is powered by a split-rail (bipolar) +/-9V supply using a charge pump, which eliminates the need for coupling capacitors within the circuit. It can also reduce noise since there is no 1/2V reference voltage.

The Taranis is a direct adaptation of the Thunderclaw with no modifications or added features. We have included a zener diode for over-voltage protection as well as some extra power filtering for the ICs, but otherwise it is faithful to the original circuit.

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 54 rows

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RefValueNormalizedTypeNotes
Resistors 17
R1470k470kMetal film resistor, 1/4W
R21k1kMetal film resistor, 1/4W
R3470R470Metal film resistor, 1/4W
R44k74.7kMetal film resistor, 1/4W
R551k51kMetal film resistor, 1/4W
R651k51kMetal film resistor, 1/4W
R74k74.7kMetal film resistor, 1/4W
R8470R470Metal film resistor, 1/4W
R94k74.7kMetal film resistor, 1/4W
R104k74.7kMetal film resistor, 1/4W
R11470R470Metal film resistor, 1/4W
R1251k51kMetal film resistor, 1/4W
R1351k51kMetal film resistor, 1/4W
R141k1kMetal film resistor, 1/4W
R15100k100kMetal film resistor, 1/4W
RPD2M22.2MMetal film resistor, 1/4WInput pull-down resistor. Can be as low as 1M.
LEDR10k10kMetal film resistor, 1/4WLED current-limiting resistor. Adjust value to change LED brightness.
Capacitors 17
C1100n100nFilm capacitor, 7.2 x 2.5mm
C21uF1uFilm capacitor, 7.2 x 3.5mm
C347pF47pMLCC capacitor, NP0/C0GOptional. See build notes.
C4100n100nFilm capacitor, 7.2 x 2.5mm
C510n10nFilm capacitor, 7.2 x 2.5mm
C61n1nFilm capacitor, 7.2 x 2.5mm
C71uF1uFilm capacitor, 7.2 x 3.5mm
C81n1nFilm capacitor, 7.2 x 2.5mm
C91uF1uFilm capacitor, 7.2 x 3.5mm
C1010uF10uElectrolytic capacitor, 5mm
C1147uF47uElectrolytic capacitor, 5mmPower supply filter capacitor.
C12100uF100uElectrolytic capacitor, 6.3mmPower supply filter capacitor.
C13100n100nMLCC capacitor, X7RPower supply filter capacitor.
C14100n100nMLCC capacitor, X7RPower supply filter capacitor.
C15100n100nMLCC capacitor, X7RPower supply filter capacitor.
C16100n100nMLCC capacitor, X7RPower supply filter capacitor.
C17100n100nMLCC capacitor, X7RPower supply filter capacitor.
Diodes 4
Z11N4742A1N4742AZener diode, 12V, DO-41
D11N58171N5817Schottky diode, DO-41
D21N40011N4001Rectifier diode, DO-41
D31N40011N4001Rectifier diode, DO-41
ICs 3
IC1RC4558PRC4558POperational amplifier, dual, DIP-8
IC2RC4558PRC4558POperational amplifier, dual, DIP-8
IC3LT1054CPLT1054CPCharge pump, DIP-8
Potentiometers 4
DIST.50kBB50k16mm right-angle PCB mount potLinear taper.
TREBLE50kBB50k16mm right-angle PCB mount potLinear taper.
BASS50kBB50k16mm right-angle PCB mount potLinear taper.
OUTPUT50kBB50k16mm right-angle PCB mount potLinear taper.
Switches 1
FSW3PDT3PDTStomp switch, 3PDT
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
BATTBattery snapBATTERY SNAP9V battery snapOptional. Use the soft plastic type—the hard-shell type will not fit.
ENC125B125BEnclosure, die-cast aluminumCan also use a Hammond 1590N1.

Other boards based on the Mr. Black Thunderclaw