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VOLUMESUSTAINTONE

Enclosure not stated · 3 knobs

Tagboard Effects

Sekova Big Muff Model 2015

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

Category
Fuzz
Controls
Volume · Sustain · Tone
Build
Vero· 19×17· 16 cuts, 5 links
Layout
Unverified · no build reported at Tagboard Effects yet
Tags
Big, Muff, Sekova, Shin Ei
Open the layout at Tagboard Effects

From the post

This is a rare Japanese Big Muff clone made by Shin Ei. It is a clone of a triangle Big Muff, however it has some substantial differences to the triangle Muff layout we have here on the site. The 47n caps in the clipping stages here vs the 1uf caps in the clipping stages of Mark's triangle Muff layout alone should give you a substantially different sound.

I based this layout on Mark's classic Big Muff template, and included the series polarity protection diode (D1). This diode is not in the original pedal, and you can omit it if you want.

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 27 rows

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Check before you build · 2 values the reader of this layout was not sure of
  • 4nF film cap at column J rows F-H: printed clearly, unusual value
  • 500pF ceramics (three): printed clearly, unusual value
RefValueNormalizedTypeNotes
Resistors 10
×4100K100kread from the layout by eye
×4470K470kread from the layout by eye
×333K33kread from the layout by eye
×212K12kread from the layout by eye
×210K10kread from the layout by eye
×28.2K8.2kread from the layout by eye
×2150Ω150read from the layout by eye
×1150K150kread from the layout by eye
×12.7K2.7kread from the layout by eye
×11K1kread from the layout by eye
Capacitors 5
×6100nF100nread from the layout by eye
×247nF47nread from the layout by eye
×110nF10nread from the layout by eye
×14nF4nread from the layout by eye
×3500pF500pread from the layout by eye
Diodes 5
D11N58171N5817optional, use 1N5817 or similar; read from the layout by eye
D21N9141N914read from the layout by eye
D31N9141N914read from the layout by eye
D41N9141N914read from the layout by eye
D51N9141N914read from the layout by eye
Transistors 4
Q12SC13352SC1335try any NPN Si; read from the layout by eye
Q22SC13352SC1335try any NPN Si; read from the layout by eye
Q32SC13352SC1335try any NPN Si; read from the layout by eye
Q42SC13352SC1335try any NPN Si; read from the layout by eye
Potentiometers 3
VolumeB100KB100kPotentiometerread from the layout by eye
SustainB100KB100kPotentiometerread from the layout by eye
ToneB100KB100kPotentiometerread from the layout by eye

Other boards based on the Electro-Harmonix Big Muff Pi