Enclosure not stated · 2 knobs
Redson 12 OverdriveVerified
Based on the Redson 12 Overdrive
From the post
Here is a quite rare old japanese low to mid gain overdrive that is supposed to sound really good. A big thanks to Tobias for the trace!
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 · 1 value the reader of this layout was not sure of
- IC1: legend prints 'TL4558P or 6552', entered as printed (unusual part numbers)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×4 | 220K | 220k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×2 | 12K | 12k | read from the layout by eye | |
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 270Ω | 270 | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×3 | 22nF | 22n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×3 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N914 | 1N914 | D1-D4; read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N3904 | 2N3904 | legend: 2N3904, 2N5088 etc. (2SC1815 in original); read from the layout by eye | |
| Q2 | 2N3904 | 2N3904 | legend: 2N3904, 2N5088 etc. (2SC1815 in original); read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL4558P | TL4558P | legend: TL4558P or 6552; read from the layout by eye | |
| Potentiometers 2 | ||||
| Drive | C10K | C10k | Potentiometer | read from the layout by eye |
| Level | B100K | B100k | Potentiometer | read from the layout by eye |