Akashic Guitar effects circuit lookup
VOLUMEFUZZ

1590A · 2 knobs

Effects Layouts (blog)

NPN Fuzz FaceVerified

Based on the Dallas Arbiter Fuzz Face· 62 other boards clone it

Category
Fuzz
Controls
Volume · Fuzz
Build
Perfboard
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Dallas Arbiter, Dunlop, Fuzz
Open the layout at Effects Layouts (blog)

From the post

Not that the internet needs another Fuzz Face layout, but I'm adding it for the completeness of this collection. It is a DIY standard after all. This follows the stock NPN silicon version with BC108 transistors.

I've added a anti-popping pull down resistor, a power filter cap, and polarity protection diode. There a host of modifications to the circuit you can find on forums and the like, but one I highly recommend is replacing the stock B1k fuzz pot with either a C1k or B2k pot. This will give a better sweep of the range of fuzz. It's also not a bad idea to replace the 8.2k resistor with a 10k trimmer or B10k pot (wired as a variable resistor) to help bias Q2 correctly.

There are many different transistors that sound good in this circuit (I've used 2N2222 and 2N2369 trannies with good success). Just use sockets and try different ones out.

This would be a good candidate to fit in a 1590a enclosure. You could also use this layout to make the PNP germanium Fuzz Face, the ColorSound 1-Knob Fuzz, Tone Bender Mk 1.5, or the Roger Mayer Classic Fuzz. Just look up the schematics and note the component changes.

UPDATE:

I've verified the layout and put it in a 1590a using 2N5550 transistors. Here's pics of my build:

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 14 rows

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RefValueNormalizedTypeNotes
Resistors 5
×18.2K8.2kread from the layout by eye
×1330Ω330read from the layout by eye
×133K33kread from the layout by eye
×12.2M2.2Mread from the layout by eye
×1100K100kread from the layout by eye
Capacitors 4
×110nF10nread from the layout by eye
×12.2uF2.2uelectrolytic; read from the layout by eye
×122uF22uelectrolytic; read from the layout by eye
×147uF47uelectrolytic; read from the layout by eye
Diodes 1
×11N40011N4001printed 4001; read from the layout by eye
Transistors 2
Q1BC108BC108read from the layout by eye
Q2BC108BC108read from the layout by eye
Potentiometers 2
VolumeA500KA500kPotentiometerread from the layout by eye
FuzzB1KB1kPotentiometerread from the layout by eye

Other boards based on the Dallas Arbiter Fuzz Face