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Diyguitarpedals.com.au
Big Knob
What do you get when a One Knob Fuzz collides with a Big Muff Pi Tone Stack? Ok, minds out of the gutter…The Big
Knob of course! I’ve always felt the One Knob Fuzz could use a tone control for versatility as well as experimentation.
The Big Muff Pi won the deal, it marries seamlessly with the One Knob Fuzzes expressive output. 16mm pot spacing and
silicon transistors make this project a good contender for a silicon fuzz with “bang for buck”.
Bill of materials
Resistors
Capacitors
R1
1M
C1
100nf
R2
10k
C2
220pf
R3
82R
C3
10nf
R4
2k2
C4
10uf
R5
150k
C5
22nf
R6
1k
C6
220nf
R7
39k
C7
220nf
R8
47k
R9
430k
Transistors
R10
100k
Q1
2n3904 (see notes)
R11
15k
Q2 2n3904 (see notes)
R12
3k3
Q3 2n5088
Potentiometer
Diodes
Volume 100ka (16mm)
D1
1n4001
Tone 100kb (16mm)