The people from EQD revisited another classic forgotten pedal as is the Vox Repeat Percussion Tremolo, adding volume and depth control, plus the rate mod toggle that switches in between capacitors altering the behavior of the tremolo.
They also included the possibility of controlling the Rate with an external pedal.
For this layout, we have made a deep analysis of both circuits, the Vox and EQD version in order to deliver the best possible version of it.
Both version features originally a 2N2646 transistor for the tremolo section, however as this part is often hard to source we made a little adaptation to work with the modern 2N6027.
We have also included an external LED that follows the Rate speed, bellow on the section of components recommendation we explain further the proper functionality of this.
We also took into consideration the reports of many pedal builders about this project on different forums across the web where they were reporting a constant issue, the ticking of the LFO louder than the tremolo effect itself. To deal with this we included a power filtering resistor, and also replaced the low gain wn3904 for a high gain 2n5089 transistors.
- Rate mode Switch
For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum