FuzzDog L'il Louie User manual

L’il Louie
Fender Tweed Tone
for days!
Contents of this document are ©2016 Pedal Parts Ltd.
No reproduction permitted without the express written
permission of Pedal Parts Ltd. All rights reserved.

Schematic + BOM
1 3M3
2 3K3
3 330
4 1K
5 1M
6 2K2 (CL )
7 2K2 (CL )
C1 47n
C2 100n
C3 100n
C4 47u elec
C5 47u elec
Q1 2N5088
D1-2 1N4148
D3-5 BAT46
BOOST 1KB
VOL 100KB
CLIP SPDT ONOFFON
At first glance the schematic may look a little
complex for such a simple circuit, but a lot of
that is down the footswitch connections which
are shown.

Be very careful when soldering the diodes
and transistor. They’re very sensitive to
heat. You should use some kind of heat
sink (crocodile clip or reverse action
tweezers) on each leg as you solder them.
Keep exposure to heat to a minimum
(under 2 seconds).
Snap the small metal tag off the pots so
they can be mounted flush in the box.
Positive (anode) legs of the electrolytic
caps go to the square pads.
Negative (cathode) legs of the diodes and
LEDs go to the square pads.
Footswitches should be placed with the
lugs oriented horizontally as shown above.
You should use the enclosure as a guide
for soldering in the footswitches. There’s a
little wiggle room in the pads on the PCB.
Placing the footswitches in the holes in
the enclosure then dropping the PCB onto
them while in-situ will ensure a perfect fit.
There’s not really any way of testing the
circuit without fully asembling it, so check
everything twice and solder very carefully.
Wire everything in and fire it up.
The Boost control is actually a grit boost,
not a volume boost.
PCB layout ©2016 Pedal Parts Ltd.

The only critical measurement for drilling is the 60mm gap between the footswitch
centres. Everything else can be moved around to suit, as long as your jacks clear
the footswitches and pots.
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
Drilling template
Hammond 1590B
60 x 111 x 31mm
It’s a good idea to drill the pot holes 1mm
bigger i you’re board-mounting them.
Wiggle room = good!
Recommended drill sizes:
Pots 7mm
Jacks 10mm
Footswitch 12mm
DC Socket 12mm
Toggle Switch 6mm
60mm