Enclosure not stated · 3 knobs
Bearfoot FX Dyna Red Distortion
Based on the BearFoot FX Dyna Red Distortion· 3 other boards clone it
- Category
- Overdrive
- Price
- see vendor
From the vendor
The Bearfoot FX production version of the Dyna Red, shown as an edit of the BJF trace: the same CA3130 stage with red LED clipping, diode pair, treble control and 2N5458 buffer, with a larger 47n input cap, 14.7K input resistor, 220p feedback cap, 3.6K and 3K resistors in place of the 3K and 4.7K, and the 6.8K/10u leg removed.
Schematic
The schematic is in the post. Open it at Revolution Deux. No KiCad fragment has been drawn for this circuit yet.
Parts list 36 rows
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Check before you build · 2 values the reader of this schematic was not sure of
- The gain-leg cap is still drawn 0.47u on this edited drawing; the post's 0.1u note was about the modded BJF unit, so it is left as drawn here.
- The LED indicator's series resistor is erased on this edit.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| R1 | 1M | 1M | read from the schematic by eye | |
| R2 | 360K | 360k | read from the schematic by eye | |
| R3 | 14.7K | 14.7k | read from the schematic by eye | |
| R4 | 3K | 3k | read from the schematic by eye | |
| R6 | 1K | 1k | read from the schematic by eye | |
| R7 | 1K | 1k | read from the schematic by eye | |
| R8 | 3.6K | 3.6k | read from the schematic by eye | |
| R9 | 1M | 1M | read from the schematic by eye | |
| R10 | 10K | 10k | read from the schematic by eye | |
| R11 | 3K | 3k | read from the schematic by eye | |
| R12 | 47 | 47 | read from the schematic by eye | |
| R13 | 47K | 47k | bias divider; read from the schematic by eye | |
| R14 | 47K | 47k | bias divider; read from the schematic by eye | |
| Capacitors 11 | ||||
| C1 | 47n | 47n | marked 473; read from the schematic by eye | |
| C2 | 100p | 100p | compensation, marked 101; read from the schematic by eye | |
| C5 | 470n | 470n | electrolytic, 50V; read from the schematic by eye | |
| C6 | 220p | 220p | marked 221; read from the schematic by eye | |
| C7 | 1u | 1u | electrolytic, 50V; read from the schematic by eye | |
| C8 | 47n | 47n | marked 473; read from the schematic by eye | |
| C9 | 22n | 22n | marked 223; read from the schematic by eye | |
| C10 | 22n | 22n | marked 223; read from the schematic by eye | |
| C11 | 1u | 1u | electrolytic, 50V; read from the schematic by eye | |
| C12 | 100u | 100u | electrolytic, 25V; read from the schematic by eye | |
| C13 | 22u | 22u | electrolytic, 25V; read from the schematic by eye | |
| Diodes 4 | ||||
| D1 | 1N4001 | 1N4001 | read from the schematic by eye | |
| D2 | 1N4001 | 1N4001 | read from the schematic by eye | |
| D3 | 1N4001 | 1N4001 | read from the schematic by eye | |
| D4 | 3.6V zener | 3V6 | in series with the LED; read from the schematic by eye | |
| Transistors 1 | ||||
| Q1 | 2N5458 | 2N5458 | read from the schematic by eye | |
| ICs 1 | ||||
| IC1 | CA3130EZ | CA3130EZ | read from the schematic by eye | |
| Potentiometers 3 | ||||
| Dist | A500K | A500k | Potentiometer | read from the schematic by eye |
| Treble | B50K | B50k | Potentiometer | read from the schematic by eye |
| Volume | B50K | B50k | Potentiometer | read from the schematic by eye |
| LEDs 3 | ||||
| LED1 | red | RED | 1.8V, feedback clipping; read from the schematic by eye | |
| LED2 | red | RED | 1.8V, feedback clipping; read from the schematic by eye | |
| LED3 | LED | LED | on/off indicator; read from the schematic by eye | |
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