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GAINTREBLEMIDDLEBASSLEVEL

Enclosure not stated · 5 knobs

Revolution Deux

Marshall Guv'nor

Based on the Marshall Guv'nor· 20 other boards clone it

Category
Distortion
Controls
Gain · Treble · Middle · Bass · Level
Price
see vendor
Read the post at Revolution Deux Schematic image

From the vendor

Michael Burgundy's 1999 drawing of the Marshall Guv'nor, shown in the post as the circuit the Crunch Box is based on: a TL072 with two gain stages, red LED clipping to ground, a three-band passive tone stack and an effects loop.

Schematic

The schematic is in the post. Open it at Revolution Deux. No KiCad fragment has been drawn for this circuit yet.

Parts list 37 rows

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RefValueNormalizedTypeNotes
Resistors 14
R162.2M2.2Mread from the schematic by eye
R31M1Mread from the schematic by eye
R12.2K2.2kread from the schematic by eye
R210K10kread from the schematic by eye
R6680K680kread from the schematic by eye
R71K1kread from the schematic by eye
R91.5K1.5kread from the schematic by eye
R11100100read from the schematic by eye
R10680680read from the schematic by eye
R8680680read from the schematic by eye
R1222K22kread from the schematic by eye
R447K47kread from the schematic by eye
R547K47kread from the schematic by eye
R144.7K4.7kLED resistor; read from the schematic by eye
Capacitors 14
C59.6n9.6nread from the schematic by eye
C1100n100nmeasured 94n; read from the schematic by eye
C2120p120pread from the schematic by eye
C3220n220nmeasured 195n; read from the schematic by eye
C4100n100nmeasured 89n; read from the schematic by eye
C8220p220pread from the schematic by eye
C9220n220nmeasured 183n; read from the schematic by eye
C134n4nread from the schematic by eye
C1210n10nread from the schematic by eye
C11220n220nmeasured 183n; read from the schematic by eye
C10100n100nread from the schematic by eye
C668n68nread from the schematic by eye
C14470p470pread from the schematic by eye
C710u10uelectrolytic; read from the schematic by eye
ICs 1
IC1TL072TL072read from the schematic by eye
Potentiometers 5
GainB100KB100kPotentiometerVR1; read from the schematic by eye
TrebleA10KA10kPotentiometerVR4; read from the schematic by eye
MiddleA10KA10kPotentiometerVR3; read from the schematic by eye
BassA10KA10kPotentiometerVR2; read from the schematic by eye
LevelB100KB100kPotentiometerVR5; read from the schematic by eye
LEDs 3
D1red LEDRED LED3mm, clipping; read from the schematic by eye
D2red LEDRED LED3mm, clipping; read from the schematic by eye
LEDred LEDRED LEDindicator, 3mm; read from the schematic by eye

Other boards based on the Marshall Guv'nor