Enclosure not stated · 5 knobs
Ace Tone FM-3 Fuzz MasterVerified
Based on the Ace Tone FM-3 Fuzz Master
From the post
Another Japanese Big Muff variant, this one has some substantial modifications. This has a footswitch to select between boost or fuzz, but you can't use both at the same time. The boost mode has it's own volume and tone pots. There are also other differences in biasing, filtering, as well as the location of the volume pot (in this circuit it is moved pre Q4) making this an interesting take on the Big Muff.
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 27 rows
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Check before you build · 1 value the reader of this layout was not sure of
- Boost SW: the drawing only numbers its lugs 1-6, so DPDT is inferred and the switch type (toggle or footswitch) is not stated
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×3 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 820Ω | 820 | read from the layout by eye | |
| ×1 | 2.7K | 2.7k | read from the layout by eye | |
| ×3 | 8.2K | 8.2k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×4 | 33K | 33k | read from the layout by eye | |
| ×6 | 100K | 100k | read from the layout by eye | |
| ×1 | 150K | 150k | read from the layout by eye | |
| ×1 | 390K | 390k | read from the layout by eye | |
| ×3 | 470K | 470k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×3 | 250pF | 250p | read from the layout by eye | |
| ×1 | 3.3nF | 3.3n | read from the layout by eye | |
| ×2 | 4.7nF | 4.7n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×6 | 100nF | 100n | read from the layout by eye | |
| ×3 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 1N5817 | 1N5817 | D1 is optional, use 1N5817 or similar; read from the layout by eye | |
| ×4 | 1N914 | 1N914 | D2-D5; read from the layout by eye | |
| Transistors 1 | ||||
| ×4 | 2SC1000 | 2SC1000 | Q1-Q4 are 2SC1000, try any NPN Si; read from the layout by eye | |
| Potentiometers 5 | ||||
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Sustain | B100K | B100k | Potentiometer | read from the layout by eye |
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Boost-volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Boost-tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Boost | DPDT | DPDT | six lugs wired; type not stated; read from the layout by eye | |