Enclosure not stated · 4 knobs
Mad Professor Evolution Orange Underdrive
Based on the Mad Professor Evolution Orange Underdrive· 1 other board clones it
- Category
- EQ / Filter
- Build
- Vero· 20×20· 27 cuts, 14 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- BJF/MP/Bearfoot, Eq
From the post
Thanks to storyboardist for the schematic.
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 27 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 14.7K (five of them): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×5 | 14.7K | 14.7k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×2 | 8.2K | 8.2k | read from the layout by eye | |
| ×2 | 5.6K | 5.6k | read from the layout by eye | |
| ×2 | 62K | 62k | read from the layout by eye | |
| ×1 | 5.1K | 5.1k | read from the layout by eye | |
| ×1 | 3.6K | 3.6k | read from the layout by eye | |
| ×1 | 51K | 51k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| Capacitors 9 | ||||
| ×3 | 1uF | 1u | film; read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×4 | 47nF | 47n | read from the layout by eye | |
| ×3 | 22nF | 22n | read from the layout by eye | |
| ×2 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 3.3nF | 3.3n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 330pF | 330p | read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| ICs 2 | ||||
| IC1 | TLE2072 | TLE2072 | legend: TLE2072 or TL072; TLE2074 quad op amp in original; read from the layout by eye | |
| IC2 | TLE2072 | TLE2072 | legend: TLE2072 or TL072; TLE2074 quad op amp in original; read from the layout by eye | |
| Potentiometers 4 | ||||
| Mids | B100K | B100k | Potentiometer | read from the layout by eye |
| Treble | B50K | B50k | Potentiometer | read from the layout by eye |
| Bass | A50K | A50k | Potentiometer | read from the layout by eye |
| Level | A50K | A50k | Potentiometer | read from the layout by eye |
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