Enclosure not stated · 5 knobs
21st Century Big MuffVerified
Based on the Electro-Harmonix Big Muff Pi· 73 other boards clone it
From the post
Mictester's version of the Big Muff.
You can find the original FSB thread and schematic here.
I've used the updated schematic on page 2.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 29 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- 100n film cap right of the 1K, centre-right of the board (about two-thirds across, mid height): reads 100n zoomed but looks like 10n at full size
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×2 | 6K8 | 6.8k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×2 | 82K | 82k | read from the layout by eye | |
| ×2 | 100R | 100 | read from the layout by eye | |
| ×6 | 22K | 22k | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×1 | 2M2 | 2.2M | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×1 | 180K | 180k | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 7 | ||||
| ×2 | 560p | 560p | read from the layout by eye | |
| ×3 | 1n | 1n | read from the layout by eye | |
| ×4 | 10n | 10n | read from the layout by eye | |
| ×2 | 47n | 47n | read from the layout by eye | |
| ×6 | 100n | 100n | read from the layout by eye | |
| ×5 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N4148 | 1N4148 | D1-4; read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 1 | ||||
| ×2 | BC550C | BC550C | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Treble | A470K | A470k | Potentiometer | read from the layout by eye |
| Level | A470K | A470k | Potentiometer | read from the layout by eye |
| Sustain | A100K | A100k | Potentiometer | read from the layout by eye |
| Gains | A50K | A50k | Potentiometer | dual; read from the layout by eye |
| Bass | A1M | A1M | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| BM/JT | SPDT | SPDT | toggle; read from the layout by eye | |
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