Enclosure not stated · 5 knobs
Royal CW-1 Cosmo Wah Machine
Based on the Royal CW-1 Cosmo Wah Machine· 1 other board clones it
- Category
- Vibrato / Chorus
- Build
- Vero· 23×28· 37 cuts, 11 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- Modulation, Ringmod, Royal, Wah
From the post
Now this is some crazy stuff! How about a wah / ringmodulator with vibrato tails??? The schematic is avaiable at DeadEnd Fx. Note that the Wah/Cosmo Select switch is the stock 2P6T rotary for this layout.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 33 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
- 20K x2 (columns 9 and 21, rows M-O): printed clearly, unusual value
- 3.6K (column 5, rows J-L): printed clearly as 3,6K, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×6 | 27K | 27k | read from the layout by eye | |
| ×4 | 150K | 150k | read from the layout by eye | |
| ×11 | 220K | 220k | read from the layout by eye | |
| ×1 | 3.6K | 3.6k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×2 | 20K | 20k | read from the layout by eye | |
| ×7 | 10K | 10k | read from the layout by eye | |
| ×6 | 1.8K | 1.8k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×4 | 33nF | 33n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×3 | 4.7nF | 4.7n | read from the layout by eye | |
| ×3 | 470nF | 470n | read from the layout by eye | |
| ×11 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 8 | ||||
| Q1 | 2N5088 | 2N5088 | 2SC828-S in original; Q2 & Q3 matched gain; read from the layout by eye | |
| Q2 | 2N5088 | 2N5088 | 2SC828-S in original; Q2 & Q3 matched gain; read from the layout by eye | |
| Q3 | 2N5088 | 2N5088 | 2SC828-S in original; Q2 & Q3 matched gain; read from the layout by eye | |
| Q4 | 2N5088 | 2N5088 | 2SC828-S in original; Q2 & Q3 matched gain; read from the layout by eye | |
| Q5 | 2N5088 | 2N5088 | 2SC828-S in original; Q2 & Q3 matched gain; read from the layout by eye | |
| Q6 | 2N5088 | 2N5088 | 2SC828-S in original; Q2 & Q3 matched gain; read from the layout by eye | |
| Q7 | 2SK30-O | 2SK30-O | JFET; read from the layout by eye | |
| Q8 | 2SK30-O | 2SK30-O | JFET; read from the layout by eye | |
| Transformers 1 | ||||
| TR1 | 42TM018 | 42TM018 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Blend | B50K | B50k | Potentiometer | read from the layout by eye |
| Tone | B50K | B50k | Potentiometer | read from the layout by eye |
| Volume | B50K | B50k | Potentiometer | read from the layout by eye |
| Vibrate | B100K | B100k | Potentiometer | read from the layout by eye |
| Treadle | 100K | 100k | Potentiometer | wah pot; read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | stock resistor value is 1,8k; read from the layout by eye | |
| Switches 2 | ||||
| Vibe Sw | SPST | SPST | 2 throw rotary in original; read from the layout by eye | |
| Mode Sw | 6P2T rotary | 6P2T ROTARY | labelled Select Sw on the board wires; read from the layout by eye | |
Other boards based on the Royal CW-1 Cosmo Wah Machine
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