Enclosure not stated · 8 knobs
Germanium 4 Big Muff
Based on the Electro-Harmonix Germanium 4 Big Muff
- Category
- Fuzz
- Controls
- D Volume · D Gain · D Bias · O Gain · O Bias · O Tone · O Volume · Volts
- Price
- see vendorin stock
- Tags
- EHX
Schematic
The schematic image is on the project page. Open it at PCBWay.
Parts list 37 rows
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Check before you build · 1 value the reader of this schematic was not sure of
- D Bias and O Bias listed as POT rather than TRIM: labelled BIAS but they are panel knobs on the EHX original
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 18 | ||||
| ×4 | 470k | 470k | read from the schematic by eye | |
| ×4 | 150k | 150k | read from the schematic by eye | |
| ×3 | 100k | 100k | read from the schematic by eye | |
| ×2 | 1k | 1k | read from the schematic by eye | |
| ×2 | 15k | 15k | read from the schematic by eye | |
| ×2 | 220 | 220 | read from the schematic by eye | |
| ×2 | 2M2 | 2.2M | read from the schematic by eye | |
| ×2 | 4k7 | 4.7k | LED resistors for the two side LEDs; read from the schematic by eye | |
| ×2 | 10k | 10k | read from the schematic by eye | |
| ×2 | 47k | 47k | read from the schematic by eye | |
| ×2 | 25k | 25k | read from the schematic by eye | |
| ×2 | 51k | 51k | read from the schematic by eye | |
| ×1 | 470 | 470 | read from the schematic by eye | |
| ×1 | 6k2 | 6.2k | read from the schematic by eye | |
| ×1 | 50k | 50k | read from the schematic by eye | |
| ×1 | 200k | 200k | read from the schematic by eye | |
| ×1 | 33k | 33k | read from the schematic by eye | |
| ×1 | 3k3 | 3.3k | read from the schematic by eye | |
| Capacitors 7 | ||||
| ×9 | 1u | 1u | read from the schematic by eye | |
| ×2 | 100u | 100u | read from the schematic by eye | |
| ×2 | 47u | 47u | read from the schematic by eye | |
| ×1 | 22u | 22u | read from the schematic by eye | |
| ×1 | 220n | 220n | read from the schematic by eye | |
| ×1 | 5n6 | 5.6n | read from the schematic by eye | |
| ×1 | 6n8 | 6.8n | read from the schematic by eye | |
| Diodes 1 | ||||
| ×1 | 1N5819 | 1N5819 | read from the schematic by eye | |
| Transistors 2 | ||||
| ×4 | NKT275 | NKT275 | read from the schematic by eye | |
| ×1 | PN2222A | PN2222A | voltage-sag regulator driven by the Volts pot; read from the schematic by eye | |
| ICs 1 | ||||
| ×2 | TL072 | TL072 | one per side, both sections used; read from the schematic by eye | |
| Potentiometers 8 | ||||
| D Volume | A100k | A100k | Potentiometer | read from the schematic by eye |
| D Gain | A100k | A100k | Potentiometer | read from the schematic by eye |
| D Bias | B10k | B10k | Potentiometer | front-panel Bias knob on the original, so listed as a pot; read from the schematic by eye |
| O Gain | C100k | C100k | Potentiometer | read from the schematic by eye |
| O Bias | B100k | B100k | Potentiometer | front-panel Bias knob on the original, so listed as a pot; read from the schematic by eye |
| O Tone | B100k | B100k | Potentiometer | read from the schematic by eye |
| O Volume | B100k | B100k | Potentiometer | read from the schematic by eye |
| Volts | A10k | A10k | Potentiometer | read from the schematic by eye |