1590A · 3 knobs
From the vendor
Rather sweet mini version of the fuzzy classic. Small but perfectly formed, this kit fits easily into a 1590A enclosure, with all the snarl and bite you'd expect. Available in both standard and Mayer configuration, which gives a higher output level. We'll supply a 1K Reverse Log pot in the standard config, which gives a much better sweep than the original 1K Linear. You have a couple of options for the transistors: • AC128/AC125 (PNP Germanium) • BC108 (NPN Silicon) The warm and cozy PNP version must be wired positive-ground and used with an isolated power supply - it won't play nice on a daisy chain. The cheaper silicon option gives a slightly harder fuzz - think along the lines of Dark Side of the Moon solos. - a classic sound in its own right. Pots are 20mm apart, quite close to the edge of the enclosure and have round shafts - take that into consideration when choosing knobs. The kit is supplied with 9mm 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. 1590A 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: Fuzz Face Difficulty: Meduim PCB size: 30 x 25mm Knobs required: 2 Enclosure: 1590A 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 9 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 3 | ||||
| R1 | 100K | 100k | ||
| R2 | 33K | 33k | ||
| R3 | 470R | 470 | (1K) | |
| Capacitors 2 | ||||
| C1 | 2u2 | 2.2u | Electrolytic capacitor | |
| C3 | 10n | 10n | ||
| Transistors 1 | ||||
| Q1-2 | See notes on previous page | SEE NOTES ON PREVIOUS PAGE | ||
| Potentiometers 3 | ||||
| BIAS | 47K-50K Trimmer | 47K-50K TRIMMER | ||
| FUZZ | 1KB/1KC (2KB) | 1KB/1KC (2KB) | ||
| VOL | 500KA | A500k | ||
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