1590B · 3 knobs
EHX/JHS Big Muff 2Verified
Based on the Electro-Harmonix Big Muff Pi 2· 8 other boards clone it
From the post
Happy Holidays, everyone. This one seemed like it needed laying out before the year came to a close, so here's the new EXH/JHS colab, the Big Muff 2. It's an op amp based Big Muff that's not like the typical ICBM, but uses 2, 4558s in 3 soft clipping configurations into a BMP tone stack. Schematic on FSB, should fit in a 1590B. Happy New Year!
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 21 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 500pF ceramics (three, each beside a 1N4148 pair): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×2 | 27K | 27k | read from the layout by eye | |
| ×6 | 470K | 470k | read from the layout by eye | |
| ×5 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 22Ω | 22 | read from the layout by eye | |
| ×2 | 270K | 270k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×5 | 100nF | 100n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×3 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 3.3nF | 3.3n | read from the layout by eye | |
| ×3 | 500pF | 500p | read from the layout by eye | |
| ×4 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×1 | 1N5817 | 1N5817 | read from the layout by eye | |
| ×6 | 1N4148 | 1N4148 | read from the layout by eye | |
| ICs 1 | ||||
| ×2 | 4558 | 4558 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Sustain | B100K | B100k | Potentiometer | read from the layout by eye |
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
Other boards based on the Electro-Harmonix Big Muff Pi 2
- EHX Big Muff 2 - Vintage Bob Mayer version Dirtbox Layouts
- Electro Harmonix / JHS Pedals Big Muff 2 Dirtbox Layouts
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- GIG BUFF v2.0 Gigahearts FX · 125B · £10.00
- GIG BUFF v3.0 Modders Edition Gigahearts FX · 125B · £12.50
- Big Muff 2 PCBWay: Glory to Ukraine
- Red Muffin Fuzz PedalPCB · 125B · $12.00