Akashic Guitar effects PCB lookup
BIASBLOOMBODYHEADHIGHLEVEL

1590B · 6 knobs

Fuzz Dog· DoomScum

Doom Scum Fuzz

Based on the Doom Bloom

Category
Fuzz
Controls
Bias · Bloom · Body · Head · High · Level
Difficulty
Medium
Price
£38.40
Tags
fuzz

From the vendor

The stoned drop-out sibling of the Pond Scum, this fella knows what filth you're after and how to get it.

Taking the PS as a starting point, this one gets nastier with more gain on tap, more bottom end and more headroom. Works really well for drop-tuned guitars and even bass so noone needs to miss out on the mayhem, but you can easily tame the bottom end if you want to cut in a mix.

Shape as you like boost or cut the gain, beef up the lows or wind them down, smooth out the highs, tweak the bias for growl or fizz. There's a lot to play with.

The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs. Pot spacing is 17.5mm so keep those knobs small.

If you want the PCB without parts there's a link for that at the bottom of the page.

Partial kit: PCB, all board-mounted components), pots.

Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.

Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included.

Builds are only available with full kits including enclosure. Please choose appropriate knobs.

Inspired by: Doom Bloom

Difficulty: Medium

PCB size: 50 x 38mm

Knobs required: 6

Enclosure: 1590B

Direct-Connect compatible (4-way)

Download the INSTRUCTION PDF

Schematic

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 26 rows

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RefValueNormalizedTypeNotes
Resistors 6
R11M1M
R21K1k
R31M1M
R42M22.2M
R547K47k
R6100K100k
Capacitors 9
C1470p470p
C21u1u
C31u1u
C41u1u
C54n74.7n
C633n33n
C7100n100n
C81u1u
C9100u100uelec
Diodes 3
D11N58171N5817
D21N41481N4148
D35mm5MM
Transistors 2
Q12N50892N5089
Q22N50892N5089
Potentiometers 6
BIAS1KBB1kPotentiometer
BLOOM100KAA100kPotentiometer
BODY100KAA100kPotentiometer
HEAD100KAA100kPotentiometer
HIGH100KAA100kPotentiometer
LEVEL100KAA100kPotentiometer