1590B · 4 knobs
385 Drive
Based on the Walrus Audio 385 Overdrive· 1 other board clones it
- Category
- Overdrive
- Controls
- Bass · Treble · Gain · Vol
- Price
- £4.50in stock
From the vendor
The 385 Drive is our version of the Walrus Audio 385 Overdrive.
With the circuit based on the sort after Bell and Howell 385, this board goes from gentle overdrive to nearly a fuzz – and you can back of the gain and have a very loud boost. Very versatile little board!
Controls
• Gain
• Vol
• Bass
• Treble
Bias:
• Q1 : 4.5V – use trimmer 01
• Q2 : 4.5V – use trimmer 02
• Q4 : 4.5V – use trimmer 03
Schematic
The schematic is in the vendor's build document, page 1. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 45 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| R1 | 33K | 33k | 0.25 Watt Resistor | |
| R4 | 33K | 33k | 0.25 Watt Resistor | |
| R2 | 1M | 1M | 0.25 Watt Resistor | |
| R12 | 1M | 1M | 0.25 Watt Resistor | |
| R8 | 4.7K | 4.7k | 0.25 Watt Resistor | |
| R11 | 4.7K | 4.7k | 0.25 Watt Resistor | |
| R14 | 15K | 15k | 0.25 Watt Resistor | |
| R15 | 15K | 15k | 0.25 Watt Resistor | |
| R3 | 2.2K | 2.2k | 0.25 Watt Resistor | |
| R5 | 470K | 470k | 0.25 Watt Resistor | |
| R6 | 1K | 1k | 0.25 Watt Resistor | |
| R7 | 10K | 10k | 0.25 Watt Resistor | |
| R9 | 39K | 39k | 0.25 Watt Resistor | |
| R10 | 5.1K | 5.1k | 0.25 Watt Resistor | |
| R13 | 1.5K | 1.5k | 0.25 Watt Resistor | |
| Capacitors 14 | ||||
| C6 | 100nF | 100n | Cap-Box | |
| C7 | 100nF | 100n | Cap-Box | |
| C10 | 100nF | 100n | Cap-Box | |
| C2 | 22nF | 22n | Cap-Box | |
| C12 | 22nF | 22n | Cap-Box | |
| C3 | 560nF | 560n | Cap-Box | |
| C11 | 560nF | 560n | Cap-Box | |
| C4 | 10uF | 10u | Cap-Electro-Radial | |
| C5 | 10uF | 10u | Cap-Electro-Radial | |
| C8 | 10nF | 10n | Cap-Box | |
| C9 | 10nF | 10n | Cap-Box | |
| C13 | 2.2nF | 2.2n | Cap-Box | |
| C14 | 2.2nF | 2.2n | Cap-Box | |
| C1 | 100uF | 100u | Cap-Electro-Radial | |
| Diodes 3 | ||||
| D2 | 1N4148 | 1N4148 | Standard Diode | |
| D3 | 1N4148 | 1N4148 | Standard Diode | |
| D1 | 1N5817 | 1N5817 | Standard Diode | |
| Transistors 4 | ||||
| Q1 | J201 | J201 | Transistor-TO-92 Inline Wide | |
| Q2 | J201 | J201 | Transistor-TO-92 Inline Wide | |
| Q3 | J201 | J201 | Transistor-TO-92 Inline Wide | |
| Q4 | J201 | J201 | Transistor-TO-92 Inline Wide | |
| ICs 1 | ||||
| U1 | TC1044SCPA | TC1044SCPA | IC-DIP-8 | |
| Potentiometers 4 | ||||
| BASS | B100K | B100k | Potentiometer Alpha just holes | |
| TREBLE | B100K | B100k | Potentiometer Alpha just holes | |
| GAIN | A1M | A1M | Potentiometer Alpha just holes | |
| VOL | A100K | A100k | Potentiometer Alpha just holes | |
| Trimmers 3 | ||||
| TRIM1 | 100K | 100k | Trim-Pot-6mm | |
| TRIM2 | 100K | 100k | Trim-Pot-6mm | |
| TRIM3 | 100K | 100k | Trim-Pot-6mm | |
| Other 1 | ||||
| TP1 | Board-Connector-4-board-connector | BOARD-CONNECTOR-4-BOARD-CONNECTOR | TH-SolderPad-Medium-4 | |
Other boards based on the Walrus Audio 385 Overdrive
- Projectile Overdrive PedalPCB · 125B · $12.00