Enclosure not stated · 3 knobs
Monolith Fuzz OracleVerified
Based on the Monolith Oracle Fuzz· 4 other boards clone it
From the post
This is a nice aggressive sounding fuzz. The switch on the original is a push pull on the Color pot and so you can either do the same and get a 250K switched pot, or alternatively just use a DPDT 2 position toggle.
Info from Monolith Fuzz about the original:
The Oracle Fuzz is my original twist on the fuzztone "in my head"... Imagine an Italian made Vox Tonebender (2 transistor MK 1.5 circuit) with all of it's lovely midrange-heavy goodness mixed with the throaty low "huumphh" of an early Big Muff, and you're getting warm.
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 20 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×2 | 100K | 100k | one on the board, one on the switch; read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×1 | 12K | 12k | on the switch; read from the layout by eye | |
| ×1 | 8K2 | 8.2k | read from the layout by eye | |
| ×1 | 2K2 | 2.2k | read from the layout by eye | |
| ×1 | 820R | 820 | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 1u | 1u | read from the layout by eye | |
| ×1 | 56n | 56n | read from the layout by eye | |
| ×1 | 6n8 | 6.8n | read from the layout by eye | |
| ×1 | 47p | 47p | read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| ×1 | 22u | 22u | electrolytic; read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | OC76 | OC76 | germanium, hfe 112; read from the layout by eye | |
| Q2 | OC76 | OC76 | germanium, hfe 304; read from the layout by eye | |
| Potentiometers 3 | ||||
| Density | B1M | B1M | Potentiometer | read from the layout by eye |
| Color | B250K | B250k | Potentiometer | read from the layout by eye |
| Output | A500K | A500k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | DPDT on/on | DPDT ON/ON | selects 100K or 12K between Sw and Color 1; read from the layout by eye | |
Other boards based on the Monolith Oracle Fuzz
- Monolith Oracle Fuzz Dirtbox Layouts
- Monolith Oracle Fuzz Effects Layouts (blog)
- Sungrazer Naegele Audio
- Monolith Oracle turretboard.org