Enclosure not stated · 2 knobs

Hornby Skewes Zonk Machine (alternate version)

Based on the Hornby Skewes Zonk Machine· 4 other boards clone it

Category: Fuzz
Controls: Fuzz · Swell
Price: see vendor

Read the post at Revolution Deux Schematic image

From the vendor

A trace of yet another original Zonk Machine. Compared with the Jonaz version it has a 220K bias resistor, a 25K Fuzz pot, a 1.8M output resistor and OC71 transistors in the second and third stages.

Schematic

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

Parts list 19 rows

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Ref	Value	Normalized	Type	Notes
Resistors 10
R1	1M	1M		read from the schematic by eye
R2	4.7K	4.7k		Q1 emitter; read from the schematic by eye
R3	220K	220k		read from the schematic by eye
R4	2.2K	2.2k		read from the schematic by eye
R5	33K	33k		read from the schematic by eye
R6	3.3K	3.3k		Q2 collector; read from the schematic by eye
R7	15K	15k		read from the schematic by eye
R8	10K	10k		Q3 collector; read from the schematic by eye
R9	56K	56k		read from the schematic by eye
R10	1.8M	1.8M		read from the schematic by eye
Capacitors 4
C1	1n	1n		input; read from the schematic by eye
C2	25u	25u		electrolytic; read from the schematic by eye
C3	100n	100n		read from the schematic by eye
C4	47n	47n		output; read from the schematic by eye
Transistors 3
Q1	A02650	A02650		germanium PNP; read from the schematic by eye
Q2	OC71	OC71		germanium PNP; read from the schematic by eye
Q3	OC71	OC71		germanium PNP; read from the schematic by eye
Potentiometers 2
Fuzz	B25K	B25k	Potentiometer	read from the schematic by eye
Swell	A500K	A500k	Potentiometer	read from the schematic by eye

Other boards based on the Hornby Skewes Zonk Machine

Hornby Skewes Zonk Machine Effects Layouts (blog)
Hornby Skewes Zonk Machine Revolution Deux
Hornby Skewes Zonk Machine (Jonaz version) Revolution Deux
Hornby Skewes Zonk Machine turretboard.org