Enclosure not stated · 4 knobs
THAT Jam CompressorVerified
Based on the THAT Jam Compressor
- Category
- Compressor
- Difficulty
- Difficult
- Build
- Vero· 32×28· 63 cuts, 31 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Bass, Carl Martin, Compressor
From the post
Here is a DIY project similar to the Carl Martin Compressor Limiter.
There are 2 layouts: a large one that works at 9V and a smaller one where you need to decide a way to feed +/- 12V to the circuit (just a charge pump with regulators wouldn't work with this circuit).
You should read the original threads from FSB here and here before building this effect.
Good luck!
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 46 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
- 20K top right: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 21 | ||||
| ×4 | 22K | 22k | read from the layout by eye | |
| ×4 | 4K7 | 4.7k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×3 | 33K | 33k | read from the layout by eye | |
| ×2 | 2K2 | 2.2k | read from the layout by eye | |
| ×2 | 2M2 | 2.2M | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×2 | 5K6 | 5.6k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×1 | 1K5 | 1.5k | read from the layout by eye | |
| ×1 | 20K | 20k | read from the layout by eye | |
| ×1 | 8K2 | 8.2k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 560K | 560k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 1K8 | 1.8k | read from the layout by eye | |
| ×1 | 47R | 47 | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| R1 | 100R | 100 | min. 0.6W; read from the layout by eye | |
| R2 | 100R | 100 | min. 0.6W; read from the layout by eye | |
| Capacitors 8 | ||||
| ×2 | 22p | 22p | read from the layout by eye | |
| ×2 | 47p | 47p | read from the layout by eye | |
| ×5 | 100n | 100n | read from the layout by eye | |
| ×1 | 330n | 330n | read from the layout by eye | |
| ×1 | 4u7 | 4.7u | electrolytic; read from the layout by eye | |
| ×5 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×4 | 47u | 47u | electrolytic; read from the layout by eye | |
| ×3 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| ×2 | 12V Zener | 12V | D1, D2; read from the layout by eye | |
| ×5 | 1N5817 | 1N5817 | D3-7; read from the layout by eye | |
| ×3 | 1N4148 | 1N4148 | D8-10; read from the layout by eye | |
| Transistors 2 | ||||
| ×1 | BC549B | BC549B | read from the layout by eye | |
| ×1 | BS250 | BS250 | MOSFET; read from the layout by eye | |
| ICs 3 | ||||
| IC1 | THAT4301P | THAT4301P | read from the layout by eye | |
| ×1 | NE5532 | NE5532 | printed 5532; read from the layout by eye | |
| ×1 | LT1054 | LT1054 | mounted upside down; read from the layout by eye | |
| Potentiometers 4 | ||||
| Ratio | B10K | B10k | Potentiometer | read from the layout by eye |
| Gain | B10K | B10k | Potentiometer | read from the layout by eye |
| Response | B10K | B10k | Potentiometer | read from the layout by eye |
| Threshold | B50K | B50k | Potentiometer | read from the layout by eye |
| Trimmers 3 | ||||
| ×1 | 50K | 50k | read from the layout by eye | |
| TR2 | 100R | 100 | precision trimmer; read from the layout by eye | |
| TR3 | 100R | 100 | precision trimmer; read from the layout by eye | |
| Switches 2 | ||||
| Switch 1 | SPDT on/off/on | SPDT ON/OFF/ON | Sens; read from the layout by eye | |
| Switch 2 | DPDT | DPDT | Hard/Soft; read from the layout by eye | |