Passive Ring Modulator
The Synthrotek Passive Ring Modulator PCB is the classic 2 transformer – 4 diode ring modulator circuit in a conveniently small package. Passive ring modulation is a bizarre and otherworldly sound effect appearing in such diverse places as sci-fi robot voices, trippy psychedelic guitar solos, metallic analog synth samples, and more! There’s nothing on this planet that sounds like ring modulation and now you can get it for cheap! Experiment with all of your gear and you’ll definitely come up with some surprising tones you never knew you had access to.
Operation: Two input signals are multiplied together and the resulting output is the sum and difference of the frequencies of each. The germanium diode ring provides the effect with a minimum of signal distortion while the transformers segregate your audio sources from the internal circuitry. The circuit requires no external power supply!
Measuring 2 9/16″ x 1 3/16″, the Synthrotek Passive Ring Modulator PCB is a compact, high quality circuit board manufactured by Imagineering out of Elk Grove Village, IL. The layout is a custom design by our resident electronics engineer, Steven S. The PCB allows for the transformers and diodes to be soldered directly to the board neatly and a ground plane helps reduce interference from external noise and RF.
The Synthrotek Passive Ring Modulator Kit includes all of the components you’ll need to build your very own Ring Modulator. The build is a great beginner’s 1st project with a big payoff! Use it as a standalone unit or as a module, the Synthrotek Passive Ring Modulator is a great addition for your next synth project!