Mountainking Electronics P.M. DUAL Prototype VCA VCF FRAC Passive Synth Module

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"This is a prototype of a synthesizer module designed by Alan from Mountainking Electronics.

It is two independent passive modulators each with two different switchable modes, VCA (voltage controlled attenuator) and VCF (voltage controlled filter). "Passive" means that it does not require a power connector. VCA mode is for "tremolo," "ring modulator,"and other amplitude modulation effects. VCF mode is very similar to the VCA mode but it you'll notice a passive lowpass filtering effect when fed with an LFO or envelope generator and a subtle timbrel effect when an audio frequency signal/cv is used for the modulating signal. The two modulators can be cascaded for more complex modulation effects.

CONTROLS:
LIMIT: This limits/attenuates the input signal. This can be useful to help the module works with various signal levels.

DEPTH: This controls the "depth" of the modulating signal by attenuating the signal/cv. Modulating signal/cv can be an LFO, audio frequency oscillator, envelope generator, etc.

IN: Input for the signal to be modulated.

OUT: Output for the signal to be modulated.

MOD IN: Input for modulating/cv signal.

The module is built into a FRAC rack sized, hand cut and drilled, panel. PLEASE NOTE: The panels height and width (double width/3" size) are about a 1/16" taller and wider then the standard FRAC rack size. This should not cause any problem with most racks/systems but please keep it in mind. The panel is approximately 1/8" thick. Also, the mounting hole are abit rough around the edges, again nothing you should sweat about, but I just want you to know what to expect.

Alan from Mountainking has designed quite a few synthesizer modules but most of them will not be available for some time."

I created a new Mountainking label for these. There has been only one previous post featuring Mountainking back in 2012 here.