Enclosure not stated · 3 knobs
Catalinbread Formula No. 5Verified
Based on the Catalinbread Formula No. 5· 4 other boards clone it
- Category
- Preamp / Amp-in-a-box
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Amp Emulator, Catalinbread, Overdrive
From the post
The Formula No. 5 is a 5E3 Tweed Deluxe amp emulating overdrive pedal. It's essentially 2 JFET stages (very similar to the AMZ Booster) with the Tweed Deluxe tone and volume (in this case gain) controls in between. A master volume pot is added at the output for more control. Here's a great demo of this pedal from Just Nick, comparing it to an original Tweed Deluxe.
On the PCB I've added extra +9v and ground pads in case you build this with the DC jack at the top of the 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 21 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×7 | 1M | 1M | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×1 | 62K | 62k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| Capacitors 8 | ||||
| ×3 | 100nF | 100n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×3 | 1nF | 1n | read from the layout by eye | |
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 4 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q2 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q3 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q4 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Potentiometers 3 | ||||
| Tone | B1M | B1M | Potentiometer | read from the layout by eye |
| Gain | A1M | A1M | Potentiometer | read from the layout by eye |
| Volume | A500K | A500k | Potentiometer | read from the layout by eye |
Other boards based on the Catalinbread Formula No. 5
- Catalinbread Formula No. 5 Dirtbox Layouts
- Formula No 5 PCBWay: Glory to Ukraine
- Catalinbread Formula No. 5 Revolution Deux
- Catalinbread Formula No 5 Tagboard Effects