Enclosure not stated · 4 knobs
Catalinbread Formula No. 55Verified
Based on the Catalinbread Formula No. 55· 3 other boards clone it
- Category
- Preamp / Amp-in-a-box
- Build
- Vero· 21×17· 25 cuts, 8 links
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Amp Emulator, Catalinbread, Overdrive
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 34 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×7 | 1M | 1M | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×2 | 15K | 15k | read from the layout by eye | |
| ×2 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 3.9K | 3.9k | read from the layout by eye | |
| ×1 | 5.1K | 5.1k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×1 | 5.6K | 5.6k | read from the layout by eye | |
| Capacitors 10 | ||||
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 3.3nF | 3.3n | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×3 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 22uF | 22u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 5 | ||||
| Q1 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q2 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q3 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q4 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q5 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Potentiometers 4 | ||||
| Tone | A1M | A1M | Potentiometer | read from the layout by eye |
| Volume | A1M | A1M | Potentiometer | read from the layout by eye |
| Presence | B50K | B50k | Potentiometer | read from the layout by eye |
| Master | A250K | A250k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×2 | 10K | 10k | read from the layout by eye | |
| Switches 1 | ||||
| Switch | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
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