Enclosure not stated · 1 knob
Haunting Mids Fuzz V1
Based on the Haunting Mids Fuzz V1
From the post
First version with external switches. the design itself is completely different from later versions with two cascaded Szisklai silicon / germaium pair transistor stages. Switches A and B adjust gain and Switch C adjust bias of the second transistor pair. The original had Dale resistors which explains the odd values but use closest common values. Schematic is avaiable HERE.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 29 rows
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Check before you build · 1 value the reader of this layout was not sure of
- Printed clearly, unusual values: 215Ω (col 4 top), 350Ω (col 14 top), 4K (col 3), 46.4K (col 6), 6K (col 7), 980Ω (three of them), 3.83K (col 11), 1.42K (col 15), 142K (col 3 bottom), 500pF (two ceramics)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 17 | ||||
| ×1 | 215Ω | 215 | read from the layout by eye | |
| ×1 | 350Ω | 350 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 4K | 4k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 46.4K | 46.4k | read from the layout by eye | |
| ×1 | 6K | 6k | read from the layout by eye | |
| ×3 | 980Ω | 980 | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 3.83K | 3.83k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 1.42K | 1.42k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 142K | 142k | read from the layout by eye | |
| ×1 | 18K | 18k | read from the layout by eye | |
| ×1 | 680Ω | 680 | read from the layout by eye | |
| ×1 | 330Ω | 330 | read from the layout by eye | |
| Capacitors 3 | ||||
| ×2 | 500pF | 500p | read from the layout by eye | |
| ×3 | 1uF | 1u | film; read from the layout by eye | |
| ×5 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 4 | ||||
| Q1 | 2N3904 | 2N3904 | read from the layout by eye | |
| Q2 | 2N1307 | 2N1307 | read from the layout by eye | |
| Q3 | 2N3904 | 2N3904 | read from the layout by eye | |
| Q4 | 2N1307 | 2N1307 | read from the layout by eye | |
| Potentiometers 1 | ||||
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 3 | ||||
| Switch A | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| Switch B | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |
| Switch C | SPDT on/on | SPDT ON/ON | toggle; read from the layout by eye | |