Enclosure not stated · 3 knobs
Skrydstrup R&D Overdrive ODR-2Verified
Based on the Skrydstrup R&D Overdrive ODR-2
- Category
- Distortion
- Build
- Vero· 16×16· 20 cuts, 7 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Distortion, Overdrive
From the post
May as well add this one too :o) The layout actually ended up looking quite different but this is very obviously a Cornish SS-2 clone, at a similar sort of price. There are some differences which I expect will make them noticeably different, so this is probably still worth building even if you build the SS-2 as well, but I certainly wouldn't expect them to be worlds apart in tone. It would be nice to critically compare the two though.
The same applies as with the SS-2, this is designed with true bypass switching in mind, but if you do want to build it with the buffered bypass, then make a daughterboard of the Cornish Buffer. The input socket connects directly to the input of the bypass buffer. The output of the bypass buffer then goes to ODR-2 input and daisy chains to the 3PDT stomp switch, lugs 1 and 4. The output of the ODR-2 will go to 3PDT lugs 3 and 6, and the output socket connects to 3PDT lugs 2 and 5.
The third pole of the 3PDT is used for LED switching as usual.
Info about the original Cornish copy:
Skrydstrup R&D Overdrive ODR-2
The ODR2 is a smooth, dynamic overdrive unit designed to emulate the overdrive sounds of our highly recognized OD50 Tube Amplifier.
This unit is perfect for overdrive tones ranging from a semi-cranked AC30 to the sound of Hendrix.
The TONE control is not a traditional tone control, but a High Frequency Damping control. Turned all the way up the TONE control is not active.
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 24 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
- 91R lower right of the board: printed clearly, unusual value
- 2K4 next to it: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×5 | 1M | 1M | read from the layout by eye | |
| ×4 | 10K | 10k | read from the layout by eye | |
| ×2 | 150K | 150k | read from the layout by eye | |
| ×1 | 510R | 510 | read from the layout by eye | |
| ×1 | 100R | 100 | read from the layout by eye | |
| ×1 | 180K | 180k | read from the layout by eye | |
| ×1 | 2K4 | 2.4k | read from the layout by eye | |
| ×1 | 91R | 91 | read from the layout by eye | |
| ×1 | 6K8 | 6.8k | read from the layout by eye | |
| Capacitors 9 | ||||
| ×4 | 10n | 10n | read from the layout by eye | |
| ×1 | 4n7 | 4.7n | read from the layout by eye | |
| ×1 | 470n | 470n | read from the layout by eye | |
| ×1 | 1n5 | 1.5n | read from the layout by eye | |
| ×1 | 220n | 220n | read from the layout by eye | |
| ×1 | 1u | 1u | drawn as a film cap; read from the layout by eye | |
| ×2 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 220u | 220u | electrolytic; read from the layout by eye | |
| ×1 | 22u | 22u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | AA117 | AA117 | germanium; read from the layout by eye | |
| D2 | AA117 | AA117 | germanium; read from the layout by eye | |
| ICs 1 | ||||
| ×2 | LM741 | LM741 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | C50K | C50k | Potentiometer | Rev Log; wires labelled Sustain; read from the layout by eye |
| Tone | B25K | B25k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |