Enclosure not stated · 5 knobs
Catalinbread Dirty Little Secret REDVerified
Based on the Catalinbread Dirty Little Secret RED
- Category
- Preamp / Amp-in-a-box
- Build
- Vero· 18×21· 26 cuts, 9 links
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Amp Emulator, Catalinbread, Distortion, Overdrive, Pre Amp
From the post
Same mods as with DLS V3 (external gain and tone switches). 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 38 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 27uF electrolytic at col 4, rows O-P (left of Q1): printed clearly, unusual value
- 91K at col 10, rows J-K: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×5 | 1M | 1M | read from the layout by eye | |
| ×2 | 2.2M | 2.2M | read from the layout by eye | |
| ×3 | 470K | 470k | read from the layout by eye | |
| ×1 | 91K | 91k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×2 | 33K | 33k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×2 | 270Ω | 270 | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| Capacitors 13 | ||||
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×4 | 22nF | 22n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×4 | 470pF | 470p | read from the layout by eye | |
| ×1 | 270pF | 270p | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 27uF | 27u | electrolytic; read from the layout by eye | |
| ×2 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×2 | 1uF | 1u | 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 5 | ||||
| Pre Amp | A1M | A1M | Potentiometer | read from the layout by eye |
| Bass | A1M | A1M | Potentiometer | read from the layout by eye |
| Middle | B25K | B25k | Potentiometer | read from the layout by eye |
| Treble | B250K | B250k | Potentiometer | read from the layout by eye |
| Master | B250K | B250k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| Presence | 10K | 10k | read from the layout by eye | |
| Switches 2 | ||||
| Gain | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
| Tone | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |