Enclosure not stated · 2 knobs
Univox Uni-Comp
Based on the Univox CO-105 Uni-Comp· 1 other board clones it
- Category
- Compressor
- Build
- Vero· 13×15· 9 cuts, 6 links
- Layout
- Unverified · no build reported at Tagboard Effects yet
- Tags
- Compressor, Univox
From the post
Not much info on this one, but basically it was a compressor made by Univox in the 70's as part of their "foot" series. Seems to be loved by many and was recently requested. In addition to the schematic posted in the request section I found another schematic posted over at FSB, so I made 2 different layouts.
One thing to note is that the original didn't use an LED & LDR, but used a Vactrol labeled MCD527. I'm not quite sure what color LED and LDR range you should use. I would start with try a red LED and socket the LDR and try different ones to get a good range. If you were to try a vactrol maybe a NSL32 or VTL5C3 which have bee used on many different optical compressors.
Don't forget if you're using an LED & LDR to cover them in shrink wrap to block out any light and increase their efficiency and effect.
Layout 1: Based on the Schematic in the Request Section
Layout 2: Based on the Trace ad FSB of a Uni-Comp Model CO-105
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 20 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
- 30nF (right, beside the IC): printed clearly, unusual value
- 1.3k (bottom right): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×4 | 1M | 1M | read from the layout by eye | |
| ×1 | 3.3M | 3.3M | read from the layout by eye | |
| ×1 | 100k | 100k | read from the layout by eye | |
| ×1 | 6.8k | 6.8k | read from the layout by eye | |
| ×1 | 5.6k | 5.6k | read from the layout by eye | |
| ×1 | 3.3k | 3.3k | read from the layout by eye | |
| ×1 | 1.3k | 1.3k | read from the layout by eye | |
| ×1 | 1k | 1k | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 30nF | 30n | read from the layout by eye | |
| ×1 | 330nF | 330n | read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 33uF | 33u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×3 | Germanium | GERMANIUM | D1-D3; type not given; read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2SC1312 | 2SC1312 | legend: 2SC1312 (BC169, BC184, BC239, BC549); read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM741 | LM741 | read from the layout by eye | |
| Opto 1 | ||||
| LDR | ? | ? | value not given; legend: LED & LDR Unknown; read from the layout by eye | |
| Potentiometers 2 | ||||
| Volume | B2K | B2k | Potentiometer | read from the layout by eye |
| Comp | B1M | B1M | Potentiometer | read from the layout by eye |
| LEDs 1 | ||||
| D4 | ? | ? | value not given; legend: LED & LDR Unknown; read from the layout by eye | |
Other boards based on the Univox CO-105 Uni-Comp
- Univox CO-105 Uni-Comp Dirtbox Layouts