This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Monday, February 2, 2015

Kay T-1 Tremolo

Here's a 1590A candidate. The Kay T-1 Tremolo originally came in a plastic housing with a treadle that controlled the speed. Apparently similar to the Vox Repeat Percussion tremolo, but a little smoother.



    1. Did you use this layout? The pedal in your video has 2 knobs. Did you add some mods?

  2. this is the "O-Kay Tremolo"???
    or not yet??!?!?!?!

  3. This won't work until you add the 43k resistor from the base of Q1 to ground. 47k works for me but schematic show 43k

  4. Verified, it works if you put a resistor at 43K as in the original circuit.