1590B · 4 knobs
From the vendor
Absolutely massive fuzz designed for bass but just as brutal on guitar - honest! Not too far removed from a Woolly Mammoth, but with a bit more control at your fingertips. Relax/Push adjusts the input impedence, so you can tweak it for passive or active pickups. The addition of a Subs switch makes it really sweet - thin and crispy, a bit more bass or totally speaker shattering. 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 you'll need little 'uns. 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: Mastotron Difficulty: Easy PCB size: 50 x 40mm Knobs required: 5 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 24 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| R1 | 100R | 100 | ||
| R3 | 56K | 56k | ||
| R4 | 22K | 22k | ||
| R5 | 2K2 | 2.2k | ||
| R6 | 10K | 10k | ||
| R7 | 5K1 | 5.1k | ||
| Capacitors 10 | ||||
| C1 | 220n | 220n | ||
| C2 | 10n | 10n | ||
| C3 | 10n | 10n | ||
| C4 | 220n | 220n | ||
| C5 | 33n | 33n | ||
| C6 | 68n | 68n | ||
| C8 | 100u | 100u | elec | |
| C9 | 100u | 100u | elec | |
| C10 | 100u | 100u | elec | |
| C11 | 100u | 100u | elec | |
| Diodes 1 | ||||
| D1 | 1N4001 | 1N4001 | ||
| Transistors 2 | ||||
| Q1 | 2N2222A | 2N2222A | ||
| Q2 | 2N2222A | 2N2222A | ||
| Potentiometers 5 | ||||
| FUZZ | 5KC | C5k | Potentiometer | |
| RE/PSH | 100KB | B100k | Potentiometer | |
| PW | 500KB | B500k | Potentiometer | |
| TONE | 10KB | B10k | Potentiometer | |
| VOL | 10KB | B10k | Potentiometer | |