Enclosure not stated · 3 knobs
Formula No 5
Based on the Catalinbread Formula No. 5· 4 other boards clone it
- Category
- Other
- Price
- see vendorin stock
- Tags
- Catalinbread, Tweed Amp Emulator, Guitar pedal, Catalinbread, Formula No 5
From the vendor
Inspired by old tweed amplifiers, in particular the 5E3, the Catalinbread Formula No. 5 captures the unique qualities of this tone in a stompbox. The greasy mids and cutting high end that resulted from an inefficient circuit design and under-rated output transformer and speaker of the classic amplifier are captured in full detail in the Catalinbread Formula No. 5. Utilizing cascading JFET gain stages for a softer sound and natural attack/decay, the basis of the tweed tone is formed. The Tone control acts as both a bright cap and a high frequency roll-off depending on the Gain setting. At high gain, just like the amp, the Tone control has very little effect and more effect when the Gain is at lower settings. This helps the Catalinbread Formula No. 5 capture the true essence of a Tweed 5E3 circuit and like the original, the pedal cleans up nicely with the volume knob making it a fantastic choice for an always on pedal. For the true tweed enthusiast, the secret recipe has been found and is mixed properly in the Catalinbread Formula No. 5.
Schematic
The schematic image is on the project page. Open it at PCBWay.
Parts list 18 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×6 | 1M | 1M | read from the schematic by eye | |
| ×4 | 10k | 10k | read from the schematic by eye | |
| ×1 | 62k | 62k | read from the schematic by eye | |
| ×1 | 47k | 47k | read from the schematic by eye | |
| ×1 | 47 | 47 | read from the schematic by eye | |
| ×1 | 4k7 | 4.7k | read from the schematic by eye | |
| Capacitors 7 | ||||
| ×4 | 100n | 100n | read from the schematic by eye | |
| ×2 | 4u7 | 4.7u | read from the schematic by eye | |
| ×2 | 1n | 1n | read from the schematic by eye | |
| ×1 | 2u2 | 2.2u | read from the schematic by eye | |
| ×1 | 47p | 47p | read from the schematic by eye | |
| ×1 | 4n7 | 4.7n | read from the schematic by eye | |
| ×1 | 47n | 47n | read from the schematic by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the schematic by eye | |
| Transistors 1 | ||||
| ×4 | 2N5457 | 2N5457 | read from the schematic by eye | |
| Potentiometers 3 | ||||
| Gain | B1M | B1M | Potentiometer | read from the schematic by eye |
| Tone | B1M | B1M | Potentiometer | read from the schematic by eye |
| Vol | A500k | A500k | Potentiometer | read from the schematic by eye |
Other boards based on the Catalinbread Formula No. 5
- Catalinbread Formula No. 5 Dirtbox Layouts
- Catalinbread Formula No. 5 Effects Layouts (blog)
- Catalinbread Formula No. 5 Revolution Deux
- Catalinbread Formula No 5 Tagboard Effects