Enclosure not stated · 6 knobs

ZVex Box of Metal (without the gate)

Based on the Z.Vex Box of Metal· 3 other boards clone it

Category: Distortion
Controls: Trim · Gain · Treble · Bass · Mid · Volume
Price: see vendor
Also as: Vero layout · from Revolution Deux
Tags: freestompboxes.org trace

Read the post at Revolution Deux Schematic image PCB layout freestompboxes.org thread madbean Kokbox project (PDF) Vero layout

From the vendor

A high-gain distortion made of five cascaded BS170 MOSFET gain stages in the Super Hard On style, followed by a passive Treble/Mid/Bass tone stack and a Volume control. The schematic and the madbean Kokbox project leave out the original's noise gate section, which was deemed unnecessary. The trace is credited to CultureJam and Bajaman on freestompboxes.

Schematic

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

Parts list 50 rows

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Check before you build · 2 values the reader of this schematic was not sure of

The schematic shows C9 as 100n and C10 as 2n; both the vero layout and the PCB layout use 22n for C9 and C10.
The PCB layout adds a 180pF capacitor (C8) not on the schematic, and the vero layout lists R0 1M and C8 2n.

Ref	Value	Normalized	Type	Notes
Resistors 24
R1	2.2M	2.2M		read from the schematic by eye
R2	2.2M	2.2M		read from the schematic by eye
R3	5.1K	5.1k		read from the schematic by eye
R4	1K	1k		read from the schematic by eye
R5	2.2M	2.2M		read from the schematic by eye
R6	680K	680k		read from the schematic by eye
R7	470K	470k		read from the schematic by eye
R8	2.2M	2.2M		read from the schematic by eye
R9	2.2M	2.2M		read from the schematic by eye
R10	5.1K	5.1k		read from the schematic by eye
R11	470K	470k		read from the schematic by eye
R12	2.2M	2.2M		read from the schematic by eye
R13	2.2M	2.2M		read from the schematic by eye
R14	5.1K	5.1k		read from the schematic by eye
R15	220K	220k		read from the schematic by eye
R16	2.2M	2.2M		read from the schematic by eye
R17	2.2M	2.2M		read from the schematic by eye
R18	5.1K	5.1k		read from the schematic by eye
R19	2.2M	2.2M		read from the schematic by eye
R20	2.2M	2.2M		read from the schematic by eye
R21	5.1K	5.1k		read from the schematic by eye
R22	47K	47k		read from the schematic by eye
R23	100	100		read from the schematic by eye
R24	100K	100k		read from the schematic by eye
Capacitors 13
C1	22n	22n		read from the schematic by eye
C2	22n	22n		read from the schematic by eye
C3	1n	1n		read from the schematic by eye
C4	10n	10n		read from the schematic by eye
C5	22n	22n		read from the schematic by eye
C6	22n	22n		read from the schematic by eye
C7	100u	100u		electrolytic; read from the schematic by eye
C8	10u	10u		electrolytic; read from the schematic by eye
C9	100n	100n		22n on both layouts; read from the schematic by eye
C10	2n	2n		22n on both layouts; read from the schematic by eye
C11	22n	22n		read from the schematic by eye
C12	22n	22n		read from the schematic by eye
C13	10u	10u		electrolytic; read from the schematic by eye
Diodes 2
Z1	9.1V	9V1		zener; read from the schematic by eye
D1	1N4001	1N4001		read from the schematic by eye
Transistors 5
Q1	BS170	BS170		read from the schematic by eye
Q2	BS170	BS170		read from the schematic by eye
Q3	BS170	BS170		read from the schematic by eye
Q4	BS170	BS170		read from the schematic by eye
Q5	BS170	BS170		read from the schematic by eye
Potentiometers 6
Trim	5K	5k	Potentiometer	trimmer on Q5 source; read from the schematic by eye
Gain	C5K	C5k	Potentiometer	5KB on the PCB layout; read from the schematic by eye
Treble	A250K	A250k	Potentiometer	read from the schematic by eye
Bass	A1M	A1M	Potentiometer	read from the schematic by eye
Mid	A20K	A20k	Potentiometer	read from the schematic by eye
Volume	A100K	A100k	Potentiometer	read from the schematic by eye

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