FuzzDog BrassBlender User manual

BrassBlender
Beautiful Blending Borrowed
from the BrassMaster
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
R1 1M
R2 100R
R3 150K
R4 150K
R5 12K
R6 1M5
R7 12K
R8 150R
R9 2K2
R10 2K2
R11 150K
R12 33K
R13 22K
R14 390
R15 10K
R16 10K
R17 470K
R18 10K
R19 470
R20 4K7
R21 820
R22 CLR
C1 47p
C2 1u elec
C3 1u elec
C4 1u elec
C5 47n
C6 1u elec
C7 1u elec
C8 3n3
C9 47n
C10 1u elec
C11 1u elec
C12 1u elec
C13 10u elec
C14 22u elec
1-5 2N5210
RETURN 10KA
SEND 10KA
THRU 10KA
TONE 100KB
T-BYP DPDT ON-ON
PHASE SPDT ON-ON
You can probably use any
amount of BJTs for 1-5,
but here at FDH we’ve
only tried the 2N5210 as
listed on Moosapotamus’
original schematic.

The power and signal pads on the PCB
conform to the FuzzDog Direct Connection
format, so can be paired with the appropriate
daughterboard for quick and easy offboard
wiring.
Be very careful when soldering the transistors.
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).
The long leg (anode) of the electrolytic
capacitors go into the square pads.
Snap the small metal tag off the pots so they
can be mounted flush in the box.
Pot mounts on the back side of the board. You
can use vertical-mount or just wire up ‘normal’
pots. These should be mounted last as you’ll
have no access to a lot of the PCB pads once
they’re in place.
PCB Layout ©2016 Pedal Parts Ltd.
EFFECT
SEND
EFFECT
RETURN
IN OUT
The IN and OUT pads on the main PCB can only be used if you connect
all 6 of the Direct Connect pads to the footswitch daughterboard. Use
those on the daughterboard if not.
Please refer to the separate daughterboard document for wiring details.