Enclosure not stated · 3 knobs
Montarbo SinfhotonVerified
Based on the Montarbo Sinfhoton· 5 other boards clone it
From the post
Here's a unique fuzz box from Italy for #fuzzfriday. Long, warm sustain like a Big Muff, but with better articulation when strumming chords. There seems to be a couple different ways to build this (circuit is the same, just a few components vary), and it's ripe for modification. Using high gain silicon transistors like MPSA18 or 2N5089s and playing with the value of the resistors going to the collectors from the voltage rail is a good place to start. Check out the FSB thread on this effect for more info. Diodes weren't listed in the schematics I saw, but 1N4148s should do the trick.
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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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×4 | 10K | 10k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×2 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 5 | ||||
| D1 | ? | ? | value not given; read from the layout by eye | |
| D2 | ? | ? | value not given; read from the layout by eye | |
| D3 | ? | ? | value not given; read from the layout by eye | |
| D4 | ? | ? | value not given; read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | printed 4001; read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | BC149 | BC149 | read from the layout by eye | |
| Q2 | BC149 | BC149 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Bass | B10K | B10k | Potentiometer | read from the layout by eye |
| Treble | B10K | B10k | Potentiometer | read from the layout by eye |
| Level | A10K | A10k | Potentiometer | read from the layout by eye |
Other boards based on the Montarbo Sinfhoton
- Montarbo Sinfhoton Dirtbox Layouts
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