Akashic Guitar effects circuit lookup
SUSTAINCONTOURVOLUMETONE

Enclosure not stated · 4 knobs

Tagboard Effects

Mojo Hand Iron Bell FuzzVerified

Based on the Mojo Hand Fx Iron Bell Fuzz· 3 other boards clone it

Category
Fuzz
Controls
Sustain · Contour · Volume · Tone
Build
Vero· 19×17· 16 cuts, 5 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Fuzz, Mojo Hand

From the post

Info about the original:

David Gilmour’s lead guitar tone throughout the years has consistently been as varied as it is sought after. Numerous different fuzzes, overdrives, and boosters coupled with various amps and guitars have created some of the most gloriously rich and vibrant tones in the history of rock. While it’s clear that no sole effect can alone duplicate the “Gilmour Sound”, when it comes to fuzz…his go to unit for the majority of his career has been the legendary Big Muff, and with so many different incarnations and variants being employed at different time periods, his tone has remained extremely difficult and elusive to pin down.

The Iron Bell isn’t based on any particular Muff circuit. Instead, we’ve tweaked it to be a platform that is wide, yet focused. Unlike the Colossus Fuzz which is based on the Sovtek/Civil War era Muff, the Iron Bell is voiced to be very open and rich, with an almost 3D like harmonic quality. Alongside the standard Gain and Volume controls, the Tone and Colour knobs allow you to sculpt the overall spectrum of the EQ. That Iron Bell is tweakable enough that combining it with various set ups and effect combinations will allow an ample array of colors and shades.

The Iron Bell’s main focus isn’t meant to be “David Gilmour in a box”, it’s more a tonal tool that can be used in countless ways to get the type of epically soaring, yet manageable quality of sound that has become the signature calling card of one of music’s most legendary players. The Iron Bell can be much more, and can serve as a tool to take your tone as far as your imagination will allow.

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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.

Parts list 31 rows

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RefValueNormalizedTypeNotes
Resistors 13
×1120R120read from the layout by eye
×1220R220read from the layout by eye
×1390R390read from the layout by eye
×1820R820read from the layout by eye
×12K2kread from the layout by eye
×510K10kread from the layout by eye
×118K18kread from the layout by eye
×122K22kread from the layout by eye
×130K30kread from the layout by eye
×133K33kread from the layout by eye
×156K56kread from the layout by eye
×3100K100kread from the layout by eye
×4470K470kread from the layout by eye
Capacitors 9
×3560p560pread from the layout by eye
×16n86.8nread from the layout by eye
×110n10nread from the layout by eye
×133n33nread from the layout by eye
×156n56nread from the layout by eye
×168n68nread from the layout by eye
×5100n100nread from the layout by eye
×1330n330nread from the layout by eye
×1100u100uelectrolytic; read from the layout by eye
Diodes 1
×41N41481N4148D1, D2, D3, D4; read from the layout by eye
Transistors 4
Q12N50882N5088read from the layout by eye
Q22N50882N5088read from the layout by eye
Q32N50882N5088read from the layout by eye
Q42N50882N5088read from the layout by eye
Potentiometers 4
SustainB100KB100kPotentiometerread from the layout by eye
ContourB100KB100kPotentiometerread from the layout by eye
VolumeB100KB100kPotentiometerread from the layout by eye
ToneB50KB50kPotentiometerread from the layout by eye

Other boards based on the Mojo Hand Fx Iron Bell Fuzz