Synthrotek.com Passive Ring Modulator Mod w/ Gakken SX-150 & MOOG Etherwave THEREMIN
http://www.synthrotek.com Check out our newest Kit for sale NOW. A classic Passive Ring Modulator. Here are the Features:
Passive Ring Modulator requires no battery power
Input signals such as guitar and bass may need to be preamplified
Low part count and quick assembly. Classic 2x transformer - 4x germanium diode ring design. Schematic, assembly instructions, and Bill of Materials are available on our site.
Selling two versions - one with 1/4" jacks, one with 1/8" jacks.
Small size circuit, VERY SIMPLE TO MAKE - THE simplest rewards, little work big payoff. 10 Min of solder work, 5 is heating up iron
Multiple applications - synths, drum machines, computer audio programs, guitars (may need a preamp/buffer), theremins, output of pedals (delay, for example) modulating original signal,
experiment to find what you're looking for, try different combinations of inputs and outputs for otherworldly sci-fi sounds
The two input signals are MULTIPLIED together and produce sideband frequencies that are the sum and difference of the frequencies present in the two signals.
Sounds like old sci-fi sound effects and produces an unlimited amount of bizarre sounds. Depending on the two frequencies
You need 2 input signals, which both work together and off each other to create unique sounds.
MANY weird sounds, by changing the inputs