Enclosure not stated · 2 knobs
Ross CompressorVerified
Based on the Ross Compressor· 6 other boards clone it
- Category
- Compressor
- Build
- Vero· 18×18· 17 cuts, 8 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Compressor
From the post
As predicted! :o)
Although the layouts look different, this is extremely close to the Dyna Comp, I just rejigged things around to make the best use of space. Unfortunately I needed an extra 3 rows, but c'est la vie. Here is a summary of the differences between the Ross Compressor and the Dyna Comp:
• 1M resistor from Q1 base to vbias changed to 2 x 470K in series with a 1u cap from the junction of the two to ground.
• 470K resistor from trimmer 2 to supply changed to 2 x 220K in series with a 1u cap from the junction of the two to ground.
• Direct connection of Q1 collector to supply changed to 10K resistor with 1u cap from collector to ground.
• Sustain pot 500K reverse log
• Output pot 100K linear
• There was also a 1u cap from vbias to ground but I'd already included a 100u in this position in the Dyna Comp as a more effective noise filter.
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.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×6 | 10K | 10k | read from the layout by eye | |
| ×5 | 1M | 1M | read from the layout by eye | |
| ×2 | 220K | 220k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 27K | 27k | read from the layout by eye | |
| ×2 | 150K | 150k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×4 | 10n | 10n | read from the layout by eye | |
| ×1 | 1n | 1n | read from the layout by eye | |
| ×1 | 47n | 47n | read from the layout by eye | |
| ×5 | 1u | 1u | electrolytic; read from the layout by eye | |
| ×1 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 1N914 | 1N914 | read from the layout by eye | |
| D2 | 1N914 | 1N914 | read from the layout by eye | |
| Transistors 5 | ||||
| Q1 | 2N5088 | 2N5088 | or similar; read from the layout by eye | |
| Q2 | 2N5088 | 2N5088 | or similar; read from the layout by eye | |
| Q3 | 2N5088 | 2N5088 | or similar; read from the layout by eye | |
| Q4 | 2N5088 | 2N5088 | or similar; read from the layout by eye | |
| Q5 | 2N5088 | 2N5088 | or similar; read from the layout by eye | |
| ICs 1 | ||||
| IC | CA3080 | CA3080 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Sustain | C500K | C500k | Potentiometer | read from the layout by eye |
| Output | B100K | B100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 2K | 2k | read from the layout by eye | |
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