1590A · 2 knobs
Zvex FuzzoloVerified
Based on the Z.Vex Fuzzolo· 3 other boards clone it
From the post
The Fuzzolo is one of the newer Zvex designs in a 1590a box. It's a stripped down Woolly Mammoth with a SHO added to the end, so it's got a huge fuzz sound. In production versions, there's a moveable jumper internally to go between active and passive pickups. You could use a SPDT switch to accomplish this, and make it easier to switch between the 2 modes, or you could eliminate the 2 input resistors (750Ω and 39k) and use a 50k pot as a pre-gain control. The PW (pulse width) pot pans between a square wave and a wide/narrow pulse width. Like the original, this should fit nicely in a 1590a enclosure.
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 22 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×1 | 750Ω | 750 | read from the layout by eye | |
| ×1 | 39K | 39k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×2 | 51K | 51k | read from the layout by eye | |
| ×2 | 20K | 20k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 3.9K | 3.9k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×3 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| ×1 | 9.1V | 9V1 | zener, printed 9.1v; read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | 2N3904 | 2N3904 | read from the layout by eye | |
| Q2 | 2N3904 | 2N3904 | read from the layout by eye | |
| Q3 | BS170 | BS170 | MOSFET; read from the layout by eye | |
| Potentiometers 2 | ||||
| PW | B500K | B500k | Potentiometer | read from the layout by eye |
| Vol | A50K | A50k | Potentiometer | read from the layout by eye |
Other boards based on the Z.Vex Fuzzolo
- Zvex Fuzzolo Dirtbox Layouts
- Mad Mammal Moonn Electronics · €5.50
- ZVEX Fuzzolo Tagboard Effects