Tag Archives: synthrotek

How to Synth DIY part 3 The Passive Ring Modulator

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The Passive Ring Modulator

 

This circuit is a very basic one which is why I have chosen it to be our starting point. It is also quite inexpensive with very easy soldering so it should make a great first time soldering project!

A ring Modulator basically takes two incoming signals and combines them spitting out what results in a modulated version of the original signal. This technique was used to create the famous Dalek voices in DR. Who television series.

It can also be used to beef up synth signals, Warp Drum tones, and distort strings etc. overall just a very useful circuit to have handy.

The Passive Ring Mod doesn’t require a power source so no worries there.

Take a look at the video and Have FUN!!!

Here is the Link for Synthrotek’s Passive Ring Mod https://www.synthrotek.com/kit-assembly-instructions/other/passive-ring-modulator-assembly-instructions/

 

This series is supported by Synthrotek logo

and from sales of My Sound libraries at Screen Shot 2015-01-11 at 10.03.36 AM

Synthrotek VCA triple response Dual VCA

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The Synthrotek Triple Response Dual VCA uses high quality op amps to give you the sound quality you are looking for in affordable kits and completed units. This VCA has three different response curves per channel: 2 Exponential and 1 Linear. The amplitude of EX2 (switch at right position) can be slightly attenuated via 1 trimmer pot per channel on the PCB. This allows for 3 different curves per channel. EX2 has a slightly more exponential curve than EX1. This VCA operates at 0-5V; a 5V CV input will give you 5V point to point audio output. Use over 5V if you want a super ballsy, loud VCA!
Intended for AC and audio use only (DC coupling will not function properly).
Features include:

– ~5V peak to peak output with a +5 DC CV input

– 2 exponential and 1 linear response per channel

– Channel 2 is normalled to channel 1

– Compact 4HP sized module

– Kits, complete and PCB/panel combos

– High Quality Op Amps

– Module depth: 1 7/8 inches (4.7 cm)

– Max current draw: 1mA on -12V rail, 9mA on +12V rail

 

Buy it HERE 

Here is the live build event where I build the resistor section of the VCA and hold a Q&A during it. It is a quite long video as it was held off the cuff, very laid back.