Enclosure not stated · 3 knobs
EQD Crimson Drive
- Category
- Overdrive
- Price
- see vendorin stock
- Tags
- Overdrive, Fuzz, Guitar pedal
From the vendor
Crimson Drive is a cutting-edge and dynamic overdrive built around one germanium transistor and two vintage germanium diodes. It creates an open tone with excellent overtones and a pleasant "wet grit" that cannot be reproduced on more common FET or op amp overdrive pedals. When you turn the knob, the gain can go from a high-end booster to a thundering overdrive overdrive, which sounds similar to vintage tube amps when the tubes are fully driven. Works great with both singles and humbuckers. Removes the gain level when turning the volume knob on the guitar towards zero.
Schematic
The schematic image is on the project page. Open it at PCBWay.
Parts list 22 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×2 | 1M | 1M | read from the schematic by eye | |
| ×2 | 15k | 15k | read from the schematic by eye | |
| ×1 | 10k | 10k | read from the schematic by eye | |
| ×1 | 470k | 470k | read from the schematic by eye | |
| ×1 | 68k | 68k | read from the schematic by eye | |
| ×1 | 2k2 | 2.2k | read from the schematic by eye | |
| ×1 | 1k | 1k | read from the schematic by eye | |
| ×1 | 47 | 47 | read from the schematic by eye | |
| ×1 | 4k7 | 4.7k | LED current limiter; read from the schematic by eye | |
| Capacitors 6 | ||||
| ×2 | 100n | 100n | read from the schematic by eye | |
| ×2 | 100u | 100u | read from the schematic by eye | |
| ×1 | 100p | 100p | read from the schematic by eye | |
| ×1 | 1u | 1u | read from the schematic by eye | |
| ×1 | 3n3 | 3.3n | read from the schematic by eye | |
| ×1 | 10n | 10n | read from the schematic by eye | |
| Diodes 2 | ||||
| ×2 | 1N34A | 1N34A | clipping to ground, in series; read from the schematic by eye | |
| ×2 | 1N4001 | 1N4001 | one asymmetric clipper, one polarity protection; read from the schematic by eye | |
| Transistors 2 | ||||
| ×1 | J201 | J201 | read from the schematic by eye | |
| ×1 | OC139 | OC139 | read from the schematic by eye | |
| Potentiometers 3 | ||||
| Drive | B250k | B250k | Potentiometer | read from the schematic by eye |
| Tone | B25k | B25k | Potentiometer | read from the schematic by eye |
| Level | B100k | B100k | Potentiometer | read from the schematic by eye |