Enclosure not stated · 3 knobs
Hot SiliconVerified
Based on the Hot Silicon· 2 other boards clone it
From the post
A few of you were looking for good fuzz circuits....
Gus Smalley modded the circuit from Aron. Aron modded it from tonebender. Both made enhancements and mods along the way. Or so the internet tells me. Anyway. It's supposed to be a silicon adaptation of the classic. It says 2N5089 on the schematic, but i would suggest trying out something a bit lower gain - like 2N2222 or BC109B.
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Built this last night, just to avoid any issues with it :) Works - and it's definitely not a bad fuzz. I used MPSA18s on my test build, and those work well too. Those were lying around on my desk so i just sticked them in. Didn't socket them so i can't easily try on any lower gain ones in there. But you should. Point in 2N5089s must be within the noise levels. Still. I like this one. It's not a Fuzz Face, it's not BMP, and it doesn't feel that much like the tonebender either.
Tone control may feel a bit odd, but that's to be expected. After all, it is a four transistor tonebender mod.
Just recorded a small clip with the finished box:
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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 18 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 100Ω at the top left (third resistor from the left edge): the last character is overlapped by the resistor's colour bands, read as the ohm sign
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×6 | 10K | 10k | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 150K | 150k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×3 | 100nF | 100n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 8.2nF | 8.2n | read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| Transistors 1 | ||||
| ×3 | 2N5089 | 2N5089 | or any other NPN; read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | B1K | B1k | Potentiometer | read from the layout by eye |
| Tone | B50K | B50k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
Other boards based on the Hot Silicon
- Zircon Aion FX · 125B · $12.50
- Gus Smalley Hot Silicon Revolution Deux