FuzzDog Klone V4, Manual

Page: 3 / 11

Schematic
BOM
R1 10K
R2 2M
R3 5K1
R4 1K5
R5 1K
R6 10K
R7 1K5
R8 15K
R9 47R (2K)
R10 15K
R11 422K
(420K IS FINE)
R12 1K
R13 47K
R14 22K
R15 10K (27K)
R16 4K7 (12K)
R17 392K
(390K IS FINE)
R18 4K7 (1K8)
R19 100K
R20 100K
R21 1K8 (4K7)
R22 560R
R24 100K
R26 560R
R27 100K
R28 2K2**
R29 27K
R30 27K
R31 2M
D1-2 D9E*
D3 LED
D4-5 1N4001
D6 12V zener
rated min 1W
IC1-2 TL072
IC3 7660S*
VOL 10KA (10KB)
TONE 10KB
GAIN 100KB
DUAL GANG
C1 100n
C2 68n*
C3 390n
(330n IS FINE)
C4 100n
C5 68n
C6 82n *
C7 1u tant
C8 390p
C9 1u elec
C10 1u elec
C11 2n2
C12 27n
C13 560p (820p)
C14 3n9*
C15 4u7 elec
C16 4u7 elec
C17 47u elec
C18 1u elec
C19 1u elec
C20 47u elec
C21 1u elec
C22 1u elec
BOM is for Silver Pony version.
Gold version values shown in blue .
If using a 7660 for IC3 you need one with an
S suffix. This ensures it will operate at a
frequency high enough to be inaudible.
*There are a few value substitutions we
recommend - see next page for details.
**R28 is the current limiter for the LED. This
is now located on the footswitch
daughterboard and is marked ‘CLR’.