1590BB · 1 knob
Diamond CompressorVerified
Based on the Diamond Compressor· 3 other boards clone it
- Category
- Compressor
- Controls
- FSw
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Compressor, Diamond
From the post
Gotten several requests for this one and for good reason. It's probably the best optical compressor design out there. This one's not for the feint of heart, and will take up most of a 1590BB enclosure. 3 jumpers, but the pots are board mounted. The on/off indicator LED in the original is a bi-color LED that pulsates with the signal. The switches in the original are internal, but can be mounted externally for more control. Be sure to jump lugs 3 and 5 on the EQ switch. Here's the schematic for reference.
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 40 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 6.41K at top left (next to the 3.32K, under the Compression pot): printed clearly, unusual value (6.81K would be the usual E96 value)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| ×3 | 100Ω | 100 | read from the layout by eye | |
| ×2 | 475Ω | 475 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| ×3 | 3.32K | 3.32k | read from the layout by eye | |
| ×1 | 6.41K | 6.41k | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×2 | 15K | 15k | read from the layout by eye | |
| ×2 | 22.1K | 22.1k | read from the layout by eye | |
| ×4 | 47.5K | 47.5k | read from the layout by eye | |
| ×3 | 100K | 100k | read from the layout by eye | |
| ×3 | 221K | 221k | read from the layout by eye | |
| ×5 | 475K | 475k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| Capacitors 14 | ||||
| ×3 | 100pF | 100p | read from the layout by eye | |
| ×5 | 820pF | 820p | read from the layout by eye | |
| ×2 | 3.3nF | 3.3n | read from the layout by eye | |
| ×2 | 5.6nF | 5.6n | read from the layout by eye | |
| ×3 | 10nF | 10n | read from the layout by eye | |
| ×1 | 15nF | 15n | read from the layout by eye | |
| ×6 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×2 | 330nF | 330n | read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×7 | 1N4148 | 1N4148 | read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 1 | ||||
| ×9 | 2N3904 | 2N3904 | Q1-9: 2N3904 or similar; read from the layout by eye | |
| ICs 2 | ||||
| ×1 | OP275 | OP275 | read from the layout by eye | |
| ×1 | LM358 | LM358 | read from the layout by eye | |
| Opto 1 | ||||
| ×1 | VTL5C3 | VTL5C3 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Compression | A100K | A100k | Potentiometer | printed 100K Log; read from the layout by eye |
| EQ | B50K | B50k | Potentiometer | printed 50K Lin; read from the layout by eye |
| Volume | B100K | B100k | Potentiometer | printed 100K Lin; read from the layout by eye |
| Switches 2 | ||||
| Hi Cut | SPST | SPST | read from the layout by eye | |
| EQ | DPDT on/on | DPDT ON/ON | legend: EQ Sw 3 to Sw 5; read from the layout by eye | |
| LEDs 1 | ||||
| LED | red/green | RED/GREEN | off-board two-colour LED, wires Green -, Red -, LED+; read from the layout by eye | |
Other boards based on the Diamond Compressor
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- Diamond Compressor Revolution Deux