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FuzzDog zap Operating instructions

  • Hello, I'm a chat assistant and I've reviewed the user guide for the ZAP single channel germanium fuzz monster pedal. This document provides detailed instructions on building this unique effects pedal, including component lists, a schematic, and PCB layout. I'm here to help you with any questions you might have regarding the building process or the use of this pedal.
  • What should I do before starting the build?
    What is the BITE pot?
    How do I adjust the trimmer?
    What should I do before soldering the pots?
ZAP!
Single channel germanium
fuzz monster
Contents of this document are ©2023 Pedal Parts Ltd.
No reproduction permitted without the express written
permission of Pedal Parts Ltd. All rights reserved.
Before you dig in, ensure you download
and read the General Build Guide.
It contains all the information you need
for a successful outcome.
General
Build
Guide
Your first stop
for build info
Contents of this document are ©2023 Pedal Parts Ltd.
No reproduction permitted without the express written
permission of Pedal Parts Ltd. All rights reserved.
Schematic + BOM
R1 47K
R2 47K
R3 470K
R4 470R
R5 12K
R6 1K
R7 100K
R8 220K
R9 2K2
R10 22K
R11 1K
R12 100R
R13 12K
R14 47K
R15 12K
R16 12K
R17 1K
C1 100p
C2 10n
C3 100n
C4 100n
C5 1n
C6 10n
C7 6n8
C8 10n
C9 1n
C10 470p
C11 100n
C12 1u elec
C13 4u7 elec
C14 1u elec
C15 47u elec
C16 100u elec
D1 1N5817
Q1 2N5089
Q2 2N3904
Q3 NPN Germanium**
BIAS 20K trimmer
BASS 100KB
BITE* 1KC
GAIN 500KA
TREB 25KB
VOL 100KB
*BITE is an optional pot to give
you more oomph at Q2. If you
prefer to stick with the original
just replace this with a 1K
resistor across pads 1-3.
**Works well with a range of
hFE - sounds best with
something lower around 40-50.
PCB layout ©2023 Pedal Parts Ltd.
Snap the small metal tag off the pots so
they can be mounted flush in the box.
You should solder all other board-mounted
components before you solder the pots.
Once they’re in place you’ll have no access to
much of the board.
Trimmer Adjustment
Twiddle until you get the sound you want.
No BITE? No bother...
Place a 1K resistor as below.
This template is a rough guide only. You should ensure correct marking of your
enclosure before drilling. You use this template at your own risk.
Pedal Parts Ltd can accept no responsibility for incorrect drilling of enclosures.
FuzzDog.co.uk
Drill sizes:
Pots 7mm
Jacks 10mm
Footswitch 12mm
DC Socket 12mm
Toggle switches 6mm
Rotary switches 10mm
35.5mm
Drilling template
Hammond 1590B - 60 x 111 x 31mm
Drill sizes listed are minimum.
It’s a good idea to add 1mm to anything
mounted on the PCB that’ll poke
through the front of the enclosure.
13.5mm
27mm
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