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Whether the tip or the ring is in or out is hard to say as Moogs seem to vary from synth to synth! – The
Rogue however uses RING for inputs and TIP for outputs.
Octave who made the Cat and Kitten synths also use stereo jacks. CV and GATE outputs are on one
stereo jack, and the inputs are on another stereo jack.
Auxiliary output - More control
The AUX output can be used to control functions such as filter cut-off or volume control. This depends
on what control inputs your synth has. Most mono-synths have at least a Filter input, e.g. the Pro 1.
Some synths, such as the Minimoog, also have VCA inputs (volume). Synths such as the Korg MS20
and ARP 2600 have even more inputs to control effects such as Pulse Width. The
USB SOLO
has an
output called AUX. By plugging the AUX output into the external control input of the synth, e.g. Filter
input, the cut-off frequency can be controlled over MIDI.
The AUX output is not controlled by MIDI note numbers. The converter allows you to set which MIDI
controller, e.g. Modulation Wheel, (or even velocity, after-touch, or pitch bend), will control the level of
the AUX voltage to control the synth’s extra input.
Only synths that have the appropriate inputs can be controlled from a MIDI-CV
converter.
The synth needs some sort of CV and GATE inputs.
CVs might be labelled CV In, OSC In, Keyboard In, VCO In, Key Volt, etc.
GATEs (and S-TRIG) may be labelled GATE In, S-TRIG, V-TRIG (voltage trigger, same as gate), Trig
In, etc.
Any additional inputs may be utilised, like Filter, VCF fcM, VCF, PORTA (portamento), Loudness,
VCO, PWM, etc. by using the converter’s AUX output.
Some synths that cannot be connected to a MIDI-CV converter via CV, GATE, AUX Outputs (as they
do not have them). This includes just about all polyphonic synths.
