Enclosure not stated · 4 knobs
Dunwich Amplification Ye Great Olde One - Fuzz section
Based on the Dunwich Amplification Ye Great Olde One - Fuzz section
From the post
Traced by evilarsen. This was a small run of a custom pedals for Slomatics. It was essentially a dual pedal with a fuzz circuit and a modulation circuit. This layout is for the fuzz section only. The modulation section remains unknown. There was two variants; a 4 stage optical phaser and a Parapedal with LFO. Still, you might get close enough using your favorite phaser/wah after this fuzz...
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 33 rows
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Check before you build · 2 values the reader of this layout was not sure of
- 845Ω next to Q2 (column 11): printed clearly, unusual value
- Q1/Q4-Q5 'JAN3215a' is the legend's wording, an unusual part number; legend says try 2N2907A, BC179 etc.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×3 | 33K | 33k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×1 | 27K | 27k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 845Ω | 845 | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| Capacitors 9 | ||||
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×2 | 1uF | 1u | film; read from the layout by eye | |
| ×3 | 100nF | 100n | read from the layout by eye | |
| ×2 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 15nF | 15n | read from the layout by eye | |
| ×1 | 820pF | 820p | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| Diodes 2 | ||||
| D2 | Germanium | GERMANIUM | type not given; read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 5 | ||||
| Q1 | JAN3215a | JAN3215A | PNP Si; legend: Try 2N2907A, BC179 etc.; read from the layout by eye | |
| Q2 | PNP Germanium | PNP GERMANIUM | type not given; read from the layout by eye | |
| Q3 | BS170 | BS170 | MOSFET; can be omitted; read from the layout by eye | |
| Q4 | JAN3215a | JAN3215A | PNP Si; legend: Try 2N2907A, BC179 etc.; read from the layout by eye | |
| Q5 | JAN3215a | JAN3215A | PNP Si; legend: Try 2N2907A, BC179 etc.; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LTC1144 | LTC1144 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Fuzz | C1K | C1k | Potentiometer | read from the layout by eye |
| Depth | B100K | B100k | Potentiometer | read from the layout by eye |
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | read from the layout by eye | |
| LEDs 1 | ||||
| D1 | 3mm red LED | 3MM RED LED | on the board; read from the layout by eye | |