125B · 6 knobs
DeadAstronautFX SkinwalkerVerified
Based on the Dead Astronaut Skinwalker· 1 other board clones it
- Category
- Distortion
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- DeadAstronaut, Distortion
From the post
Here's a cool original design by DeadAstronaut. It's a cascaded JFET/mu-amp based high gain distortion with a 3-band EQ. Original build doc with schematic found here. Laid out for a 125B enclosure with top mounted jacks.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 39 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 1uF x2 on the right side of the board (rows I-N, columns 17-21) are drawn as rounded boxes, not round cans: read as film/box capacitors, not electrolytic
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×1 | 47Ω | 47 | read from the layout by eye | |
| ×3 | 2.2K | 2.2k | read from the layout by eye | |
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 6.8K | 6.8k | read from the layout by eye | |
| ×6 | 10K | 10k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 560K | 560k | read from the layout by eye | |
| ×1 | 680K | 680k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 12 | ||||
| ×1 | 330pF | 330p | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×2 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 470nF | 470n | box film; read from the layout by eye | |
| ×2 | 1uF | 1u | box film; read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 6 | ||||
| Q1 | J201 | J201 | JFET; read from the layout by eye | |
| Q2 | J201 | J201 | JFET; read from the layout by eye | |
| Q3 | 2N3904 | 2N3904 | read from the layout by eye | |
| Q4 | J201 | J201 | JFET; read from the layout by eye | |
| Q5 | J201 | J201 | JFET; read from the layout by eye | |
| Q6 | J201 | J201 | JFET; read from the layout by eye | |
| Potentiometers 6 | ||||
| Pre-Gain | A1M | A1M | Potentiometer | read from the layout by eye |
| Gain | A1M | A1M | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Treble | B100K | B100k | Potentiometer | read from the layout by eye |
| Mid | B10K | B10k | Potentiometer | read from the layout by eye |
| Bass | B250K | B250k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Switch 1 | SPDT on/off/on | SPDT ON/OFF/ON | toggle; read from the layout by eye | |
| Switch 2 | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
Other boards based on the Dead Astronaut Skinwalker
- Dead Astronaut Skinwalker Dirtbox Layouts