Enclosure not stated · 6 knobs
From the vendor
Controls
• Wah (Treadle)
• Volume (Trim pot)
• Low (Trim pot)
• Q (Trim pot)
• Mid (Trim pot)
• Voice (Dip Switches)
Details
• Designed to fit the Smallbear Expression Pedal Shell Kit, should also fit most Dunlop Crybaby enclosures with DC jack.
Schematic
The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 34 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| R1 | 2M2 | 2.2M | ||
| R2 | 33K | 33k | ||
| R3 | 22K | 22k | ||
| R4 | 1K | 1k | ||
| R5 | 470K | 470k | ||
| R6 | 82K | 82k | ||
| R7 | 20K | 20k | ||
| R8 | 470K | 470k | ||
| R9 | 1K | 1k | ||
| R10 | 10K | 10k | ||
| R100 | 4K7 | 4.7k | ||
| Capacitors 15 | ||||
| C1 | 22p | 22p | ||
| C2 | 10n | 10n | ||
| C3 | 4u7 | 4.7u | ||
| C4 | 220n | 220n | ||
| C5 | 100p | 100p | ||
| C6 | 220p | 220p | ||
| C7 | 470p | 470p | ||
| C8 | 1n | 1n | ||
| C9 | 2n2 | 2.2n | ||
| C10 | 4n7 | 4.7n | ||
| C11 | 10n | 10n | ||
| C12 | 22n | 22n | ||
| C13 | 47n | 47n | ||
| C14 | 220n | 220n | ||
| C100 | 220u | 220u | ||
| Diodes 1 | ||||
| D100 | 1N5817 | 1N5817 | ||
| Transistors 2 | ||||
| Q1 | MPSA18 | MPSA18 | ||
| Q2 | MPSA18 | MPSA18 | ||
| Inductors 1 | ||||
| L1 | 500mH | 500mH | ||
| Potentiometers 3 | ||||
| WAH | 100K | 100k | Potentiometer | |
| VOL | 50K | 50k | Potentiometer | |
| MID | 2K | 2k | Potentiometer | |
| Switches 1 | ||||
| SW1 | Dip | DIP | ||