Akashic Guitar effects circuit lookup
VOLUMEGATECOMPDRIVESTAB

Enclosure not stated · 5 knobs

Effects Layouts (blog)

ZVex Fuzz FactoryVerified

Based on the Z.Vex Fuzz Factory· 24 other boards clone it

Category
Fuzz
Controls
Volume · Gate · Comp · Drive · Stab
Build
Perfboard
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Fuzz, ZVex
Open the layout at Effects Layouts (blog)

From the post

Here's my take on the ZVex Fuzz Factory. The originals have the pots mounted to the board as well, but ZVex uses the little square pots which are more expensive. I wanted a layout that used regular 16mm pots, which are easier to come by and what you probably already have in your parts stash. Q2-3 originally were AC128s, but any PNP germaniums should work fine. I believe ZVex has used a variety of different germaniums over the years. Hfe ranges should be around 70-100 and 100-150 respectively (much like a Fuzz Face).

For what it's worth, most of my layouts with onboard pots are meant to be mounted from the solder side of the board, like this:

You can do the same for this layout, but it's designed for the pots to be on the same side as the rest of the components, like this:

This way, the board will be vertical inside the enclosure, and the controls will be aligned like the original:

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 17 rows

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RefValueNormalizedTypeNotes
Resistors 5
×2220K220kread from the layout by eye
×15.1K5.1kread from the layout by eye
×1470Ω470read from the layout by eye
×147K47kread from the layout by eye
×110K10kread from the layout by eye
Capacitors 3
×310uF10uelectrolytic; read from the layout by eye
×147uF47uelectrolytic; read from the layout by eye
×1100nF100nread from the layout by eye
Diodes 1
×11N40011N4001read from the layout by eye
Transistors 3
Q12N39042N3904read from the layout by eye
Q2AC128AC128germanium; read from the layout by eye
Q3AC128AC128germanium; read from the layout by eye
Potentiometers 5
VolumeB5KB5kPotentiometerread from the layout by eye
GateB10KB10kPotentiometerread from the layout by eye
CompB10KB10kPotentiometerread from the layout by eye
DriveB10KB10kPotentiometerread from the layout by eye
StabB5KB5kPotentiometerread from the layout by eye

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