1590A · 2 knobs
Schaller FuzzVerified
Based on the Schaller Fuzz· 1 other board clones it
From the post
For Fuzz Friday I give you a fun little circuit built in West Germany in the late 60s and early 70s–the Schaller Fuzz. It's a silicon Fuzz Face variant and sounds rather good. Originals used BC109B and 239B transistors, but modern equivalents would be BC549B or 550B. It's laid out for onboard pots, but if you feel like using hookup wire, you could probably fit it in a 1590a. Schematic can be found here.
For reference, here's a schematic I drew up based on Peter Ginidis' comments below. Seems the one floating around the web isn't clear on the pot lug numbering.
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 16 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| Capacitors 5 | ||||
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 1nF | 1n | 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 | |
| ×1 | 22uF | 22u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | BC109B | BC109B | or BC239B; read from the layout by eye | |
| Q2 | BC109B | BC109B | or BC239B; read from the layout by eye | |
| Potentiometers 2 | ||||
| Intensity | B1K | B1k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
Other boards based on the Schaller Fuzz
- Schaller Fuzz Fuzz Dog · 1590B · £24.00