Enclosure not stated · 3 knobs
Earthquaker Devices Black Ash Endangered FuzzVerified
Based on the EarthQuaker Devices Black Ash· 10 other boards clone it
From the post
Traced by cenotapf and AlexS. It's basically a silicon Tonbender Mk 2 with a quite subtle treble cut control. 2N3903 transistor is a low gain version of 2N3904 so any NPN silicon with Hfe 100-150 works like MPSA06, PN22222, 2N2369 etc.
Verified by AlexS
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 24 rows
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Check before you build · 2 values the reader of this layout was not sure of
- 46K at column 8 rows B-D: printed clearly (bands yellow-blue-orange agree), unusual value
- 4.6K at column 5 rows G-J: printed clearly (bands yellow-blue-red agree), unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 46K | 46k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×1 | 4.6K | 4.6k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×2 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| C7 | ? | ? | value not given; legend: optional, labelled 15pF on silkscreen on original pcb; read from the layout by eye | |
| C8 | ? | ? | value not given; legend: optional, labelled 15pF on silkscreen on original pcb; read from the layout by eye | |
| C9 | ? | ? | value not given; legend: optional, labelled 15pF on silkscreen on original pcb; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | 2N3903 | 2N3903 | read from the layout by eye | |
| Q2 | 2N3903 | 2N3903 | read from the layout by eye | |
| Q3 | 2N3903 | 2N3903 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Fuzz | B5K | B5k | Potentiometer | read from the layout by eye |
| Top | B25K | B25k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | read from the layout by eye | |
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