Enclosure not stated · 3 knobs
Maxon OD808Verified
Based on the Maxon OD808· 3 other boards clone it
From the post
Maxon released the OD808 in 1979 and it generates natural, mild overdrive tones and is similar to the TS808. Original units used MC1458P ICs, but I've listed JRC4558s as they're likely to be on hand for many of you. Also the original diodes were Panasonic MA150. I've listed 1N4148s as a replacement, but socket and experiment there. I've read of people using 1N60Ps or similar germanium diodes to give it an even more tube-like sound.
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 22 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 50pF beside the left JRC4558: printed clearly, unusual value
- 1uF ×5: drawn as grey rounded boxes, not round cans; type (film, non-polar or electrolytic) not stated
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×2 | 220Ω | 220 | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×1 | 51K | 51k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×1 | 510K | 510k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| Capacitors 7 | ||||
| ×1 | 50pF | 50p | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×5 | 1uF | 1u | read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| ICs 1 | ||||
| ×2 | JRC4558 | JRC4558 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | A500K | A500k | Potentiometer | read from the layout by eye |
| Tone | A20K | A20k | Potentiometer | read from the layout by eye |
| Balance | B100K | B100k | Potentiometer | read from the layout by eye |
Other boards based on the Maxon OD808
- Maxon OD-808 Dirtbox Layouts
- Amp Warmer Overdrive Pro HotKits · 1590B · $2.50
- Maxon OD808 Tagboard Effects