Cardinal Tremolo

The Cardinal Tremolo is a tremolo effect evocative of the harmonic tremolo effect that was available from certain Fender amps, from 1960 to 1963. These amps include:

• The Fender Concert,
• The Fender Pro,
• The Fender Showman,
• The Fender Super, and
• The Fender Twin

Controls

1. Knob 1 - "Depth": Sets the depth of the volume swell of the tremolo
2. Knob 2 - "Rate": Sets the speed of the swell of the tremolo
3. Switch 1 - "Select": Allows selection between Harmonic and Standard Tremolo functions

General Information

We currently only have Version 1 of the Cardinal Tremolo. It would appear that 1776 Effects has also released a Version 2.

Schematic

---

Additional Sources

• Build Instructions Cardinal Tremolo, v.1
• Build Instructions Cardinal Tremolo, v.2