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123

1590B

Fuzz Dog· ICBigFluff

1978 IC Big Fluff Pie V4-5

Based on the Op Amp Big Muff Pi· 1 other board clones it

Category
Fuzz
Difficulty
Medium
Price
£33.60
Tags
fuzz

From the vendor

The daddy of thick, meaty fuzz. Everyone needs some Fluff in their life. This circuit is the V4-5 (V5 was a V4 + tone bypass switch - you can make either). A 70's experiment in emulating the Big Fluff Pie tone using op-amps rather than transistors resulted in this babe. It came kinda close, and in the process became its own sought-after sound. Similar territory to what you'd expect from a BMP, but with a heavy, grungy tone. Check out the characteristic sound of it on Smashing Pumpkins' Siamese Dream. Pads included to make modifications suggested by AnalogGuru, which make it slightly crunchier, but it sounds great stock. Don't mess! For a great read on all-things-Fluff head over to Kit Rae's Page. All this fuzzy fun in a 1590B enclosure. Fat Fluff in a skinny body. Sweet. Optional tone-bypass switch is board-mounted for minimal wiring and easy enclosure mounting. The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs. 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 enclosures. Please choose appropriate knobs. Inspired by: Op Amp Big Muff Pi Difficulty: Medium PCB size: 50 x 40mm Knobs required: 3 Enclosure: 1590B Direct Connect compatible (4-way) Download the INSTRUCTION PDF

Schematic

The schematic is in the vendor's build document, page 2. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 43 rows

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Resistors 21
R156K56k
R2220K220k
R3220K220k
R4330K330k
R510K10k
R647K47k
R762K62k
R8560K560k
R947R47
R108K28.2k
R11820K820k
R121M1M
R13470K470k
R145K65.6k
R151K21.2k
R16100K100k
R1747R47
R1847K47k
R1947K47k
R201M1M
R212K22.2k
Capacitors 13
C1150n150n
C21u1u
C34n74.7n
C410n10n
C510u10uelec
C610u10uelec
C74u74.7uelec
C8220n220n
C9330p330p
C10100n100n
C111u1u
C13100u100u
C14150n150n
Diodes 6
D11N41481N4148
D21N41481N4148
D31N41481N4148
D41N41481N4148
D51N41481N4148
D61N41481N4148
ICs 2
IC145584558
IC2741741
Switches 1
SW1SPDTSPDT

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