Tag harmonic energizer

Zap Frequency Build

Zap Frequency is a clone of the Systech Harmonic Energizer. This effect is a parametric EQ with variable band width, frequency, and resonance. The effect is very strong! It would make a good wah if you control the frequency with…

Zap Frequency #3

I’m experimenting with the Harmonic Energizer. Read more about it in my previous post. I updated the PCB with room for two pairs of clipping diodes. With this update. Using the prototyping service at PCBWay.com is a great way to…

Harmonic Energizer #2

My second build of the Harmonic Energizer. If you haven’t read my first post read about that build here. This second build tries out a couple more mods.  Discussing this circuit over at DIYStompboxes.com Mark Hammer suggested adding some clipping diodes to this…

Harmonic Energizer

Here is a clone of the Systech Harmonic Energizer. This is a parametric EQ. It’s like a single-band equalizer with a control to set the width of the frequency band that it affects. It also has a control to sweep…