Enclosure not stated · 2 knobs
Boss OD1Verified
Based on the Boss OD-1· 10 other boards clone it
From the post
Info from Boss:
The OD-1 is by now legendary. Artist of the 70's was mostly using a fuzz distortion sound and the overdrive produced by the OD-1 was not typical. It was however soon accepted as the new standard of guitar sound. The OD-1 features an asymmetric circuit where the positive and negative halves of the waveform isn't distorted equally. The sound is therefore still close to the original even though distortion have been added.
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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 21 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×5 | 10K | 10k | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×3 | 33K | 33k | read from the layout by eye | |
| ×3 | 4K7 | 4.7k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 6 | ||||
| ×3 | 47n | 47n | read from the layout by eye | |
| ×1 | 4n7 | 4.7n | read from the layout by eye | |
| ×1 | 18n | 18n | read from the layout by eye | |
| ×2 | 1u | 1u | read from the layout by eye | |
| ×1 | 47u | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | 1N914 | 1N914 | read from the layout by eye | |
| D2 | 1N914 | 1N914 | read from the layout by eye | |
| D3 | 1N914 | 1N914 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | NPN silicon | NPN SILICON | legend: Transistors are NPN silicon, no part number; read from the layout by eye | |
| Q2 | NPN silicon | NPN SILICON | legend: Transistors are NPN silicon, no part number; read from the layout by eye | |
| ICs 1 | ||||
| IC | JRC4558 | JRC4558 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Drive | A1M | A1M | Potentiometer | read from the layout by eye |
| Level | A10K | A10k | Potentiometer | read from the layout by eye |
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