Enclosure not stated · 5 knobs
21th Century Big MuffVerified
Based on the Electro-Harmonix Big Muff Pi· 73 other boards clone it
- Category
- Distortion
- Build
- Vero· 21×21· 29 cuts, 9 links
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Big Muff, Distortion, DIY Designs, Fuzz, mictester
From the post
A pretty cool lookin¨take on the ol¨Big Muff. The first and the last stage is replaced by a dual op amp, a diode lift switch at the the first clipping stage, a Gain control that biases both of the clipping stages and for the tonestack, a James control network is used for invidual bass and treble controls. . Schematic is avaiable HERE.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 30 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 500pF ceramic at top right (column 20, rows C-D): printed clearly, unusual value (the other two are 560pF)
- 5nF at lower right (column 20, rows R-S): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×4 | 100K | 100k | read from the layout by eye | |
| ×2 | 6.8K | 6.8k | read from the layout by eye | |
| ×2 | 82K | 82k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 100Ω | 100 | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×6 | 22K | 22k | read from the layout by eye | |
| ×4 | 1M | 1M | read from the layout by eye | |
| ×1 | 180K | 180k | read from the layout by eye | |
| Capacitors 9 | ||||
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×2 | 560pF | 560p | read from the layout by eye | |
| ×1 | 500pF | 500p | read from the layout by eye | |
| ×7 | 100nF | 100n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 5nF | 5n | read from the layout by eye | |
| ×5 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N914 | 1N914 | D1-D4; read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N5089 | 2N5089 | read from the layout by eye | |
| Q2 | 2N5089 | 2N5089 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Gain | A100K | A100k | Potentiometer | dual; read from the layout by eye |
| Sustain | A100K | A100k | Potentiometer | read from the layout by eye |
| Bass | A1M | A1M | Potentiometer | read from the layout by eye |
| Treble | A500K | A500k | Potentiometer | read from the layout by eye |
| Volume | A500K | A500k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | SPST | SPST | toggle; read from the layout by eye | |
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