Enclosure not stated · 2 knobs
DOD FX50 Overdrive PreampVerified
Based on the DOD FX50 Overdrive Preamp
- Category
- Overdrive
- Controls
- Distortion · Level
- Build
- Vero· 14×11· 7 cuts, 2 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- DOD, Overdrive
From the post
Here's DOD's step up from OD250 - from around '82.
On the original unit, the chip used is TL022, which is low power dual opamp - But the other half doesn't touch the effect side at all - It's only used as a buffer for the bypassed signal. So i made the layout to house a single opamp instead. TL061 is low power single opamp from the same family of chips - so i believe it should sound pretty close to the original.
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 14 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×2 | 1M | 1M | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N4148 | 1N4148 | D1-D4; read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | polarity protection; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL061 | TL061 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Distortion | C500K | C500k | Potentiometer | rev. log; read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |