Akashic Guitar effects circuit lookup
SUSTAINTONEVOLUME

Enclosure not stated · 3 knobs

Tagboard Effects

EHX 66 Triangle Big MuffVerified

Based on the Electro-Harmonix Big Muff Pi· 73 other boards clone it

Category
Fuzz
Controls
Sustain · Tone · Volume
Build
Vero
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Electro Harmonix, Fuzz
Open the layout at Tagboard Effects

From the post

May as well add this one as well while I've got the template out and mirosol has his soldering iron out! :o)

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 29 rows

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Check before you build · 2 values the reader of this layout was not sure of
  • 4n next to Q3 (centre of board): printed clearly, unusual value
  • 500p ×2: printed clearly, unusual value
RefValueNormalizedTypeNotes
Resistors 12
×4100K100kread from the layout by eye
×222K22kread from the layout by eye
×13K33.3kread from the layout by eye
×3470K470kread from the layout by eye
×1150R150read from the layout by eye
×11K1kread from the layout by eye
×210K10kread from the layout by eye
×1390K390kread from the layout by eye
×215K15kread from the layout by eye
×28K28.2kread from the layout by eye
×133K33kread from the layout by eye
×2100R100read from the layout by eye
Capacitors 7
×4120n120nread from the layout by eye
×210n10none on the board, one on the mids switch; read from the layout by eye
×14n4nread from the layout by eye
×14n74.7non the mids switch; read from the layout by eye
×2500p500pread from the layout by eye
×41u1uelectrolytic; read from the layout by eye
×1100u100uelectrolytic; read from the layout by eye
Diodes 2
×41N9141N914D1 to D4; read from the layout by eye
Dx1N58171N5817read from the layout by eye
Transistors 4
Q12N50892N5089legend: Transistors were 2N5133 which will be hard to source, try 2N5089, BC550C or similar; read from the layout by eye
Q22N50892N5089legend: Transistors were 2N5133 which will be hard to source, try 2N5089, BC550C or similar; read from the layout by eye
Q32N50892N5089legend: Transistors were 2N5133 which will be hard to source, try 2N5089, BC550C or similar; read from the layout by eye
Q42N50892N5089legend: Transistors were 2N5133 which will be hard to source, try 2N5089, BC550C or similar; read from the layout by eye
Potentiometers 3
SustainA100KA100kPotentiometerread from the layout by eye
ToneA100KA100kPotentiometerread from the layout by eye
VolumeA100KA100kPotentiometerread from the layout by eye
Switches 1
MidsDPDT on/off/onDPDT ON/OFF/ONtoggle, Scooped / Flat / Boosted mids, 3 pos DPDT; read from the layout by eye

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