Akashic Guitar effects circuit lookup
BOOSTVOLUMETONEDRIVE

Enclosure not stated · 4 knobs

Revolution Deux

ZVex Box of Rock

Based on the Z.Vex Box of Rock· 12 other boards clone it

Category
Overdrive
Controls
Boost · Volume · Tone · Drive
Price
see vendor
Read the post at Revolution Deux Schematic imageFull project downloadMadbean Pedals

From the vendor

ZVex's Marshall-style overdrive: three cascaded BS170 MOSFET stages in the style of the ZVex Super Hard On, with a Big Muff style tone control whose values come from the Brown Sound in a Box II, followed by a separate footswitched Super Hard On style boost. An ex-Madbean project.

Schematic

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

Parts list 51 rows

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Fixes to the schematic, from the post

  • The post says C7 is listed as 100n on the project's schematic and actually needs to be 10n; the reference schematic shown here already reads 10n.
RefValueNormalizedTypeNotes
Resistors 26
R18282supply; read from the schematic by eye
R21M1Minput pull-down; read from the schematic by eye
R31M1Mread from the schematic by eye
R41M1Mread from the schematic by eye
R193.9K3.9kread from the schematic by eye
R51.2K1.2kQ1 drain; read from the schematic by eye
R6470K470kread from the schematic by eye
R71M1Mread from the schematic by eye
R81M1Mread from the schematic by eye
R203.9K3.9kread from the schematic by eye
R101.2K1.2kQ2 drain; read from the schematic by eye
R9100100Q2 source; read from the schematic by eye
R111M1Mread from the schematic by eye
R121M1Mread from the schematic by eye
R213.9K3.9kread from the schematic by eye
R141.2K1.2kQ3 drain; read from the schematic by eye
R13330330Q3 source; read from the schematic by eye
R1547K47ktone; read from the schematic by eye
R1682K82ktone; read from the schematic by eye
R1710K10kread from the schematic by eye
R1810K10kread from the schematic by eye
R221M1Mread from the schematic by eye
R231M1Mread from the schematic by eye
R243.9K3.9kread from the schematic by eye
R251.2K1.2kread from the schematic by eye
R2647K47kread from the schematic by eye
Capacitors 14
C147u47uelectrolytic, supply filter; read from the schematic by eye
C2100n100ninput; read from the schematic by eye
C322n22nread from the schematic by eye
C4470p470pacross R6; read from the schematic by eye
C522n22nread from the schematic by eye
C61u1uelectrolytic; read from the schematic by eye
C822n22ntone; read from the schematic by eye
C710n10ntone; the project's schematic lists 100n, the post says 10n; read from the schematic by eye
C101n1nread from the schematic by eye
C91n1nread from the schematic by eye
C121n1nread from the schematic by eye
C111n1nread from the schematic by eye
C13100n100nboost input; read from the schematic by eye
C1410u10uelectrolytic, boost output; read from the schematic by eye
Diodes 3
D11N40071N4007polarity protection; read from the schematic by eye
D29.1V zener9V1gate protection; read from the schematic by eye
D31N41481N4148gate protection; read from the schematic by eye
Transistors 4
Q1BS170BS170read from the schematic by eye
Q2BS170BS170read from the schematic by eye
Q3BS170BS170read from the schematic by eye
Q4BS170BS170boost; read from the schematic by eye
Potentiometers 4
Boost5K5kPotentiometerread from the schematic by eye
VolumeB100KB100kPotentiometer'Level' on the drawing; read from the schematic by eye
ToneB100KB100kPotentiometerread from the schematic by eye
DriveC5KC5kPotentiometer'Gain' on the drawing; read from the schematic by eye

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