Enclosure not stated · 2 knobs
Korg CMP-1 / Yamaha CO-01 CompressorVerified
Based on the Korg CMP-1 / Yamaha CO-01 Compressor
- Category
- Compressor
- Controls
- Sensitivity · Level
- Difficulty
- Medium
- Build
- Vero· 36 cuts, 14 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Compressor, Korg, Yamaha
From the post
Here is a layout for a vintage compressor.
Schematic is available on FSB forum here.
Couldn't find any good videos around.
It has been drawn to fit any common NPN trarnsistor but if you go for the original mind the pinout!
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 25 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- 43R at the top, right of the upper 10u and left of the 13600: printed clearly as 43R at zoom (looks like 43K at full size), unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×7 | 10K | 10k | read from the layout by eye | |
| ×4 | 1M | 1M | read from the layout by eye | |
| ×3 | 4K7 | 4.7k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×2 | 2K2 | 2.2k | read from the layout by eye | |
| ×2 | 150K | 150k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 330R | 330 | read from the layout by eye | |
| ×1 | 43R | 43 | read from the layout by eye | |
| Capacitors 6 | ||||
| ×3 | 10n | 10n | read from the layout by eye | |
| ×1 | 22n | 22n | read from the layout by eye | |
| ×1 | 3n3 | 3.3n | read from the layout by eye | |
| ×3 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| ×1 | 220u | 220u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×3 | 1N4148 | 1N4148 | D1-3; read from the layout by eye | |
| D4 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 1 | ||||
| ×4 | 2SC2785k | 2SC2785K | Q1-4: original 2SC2785k (pinout: BCE) (Try other NPNs); read from the layout by eye | |
| ICs 2 | ||||
| ×1 | TL071 | TL071 | read from the layout by eye | |
| ×1 | LM13600 | LM13600 | printed 13600; read from the layout by eye | |
| Potentiometers 2 | ||||
| Sensitivity | A200K | A200k | Potentiometer | read from the layout by eye |
| Level | B10K | B10k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| Bias | 20K | 20k | read from the layout by eye | |
| Switches 1 | ||||
| Attack | DPDT | DPDT | Attack Switch: DPDT; read from the layout by eye | |