This site is my online diary where I sometimes jot down ideas. Please write to me if this is of help
to anyone else (or if this is downright BS).
The left 3 keys of the 216 are totally different to the right section.
They might as well be separate keyboards.
The right side has your standard two CV outs per key (with respective pots to set the CV level).
There is just one (double) CV pulse out for the 8 keys.
The left 3 keys each have separate CV outs (set by the lower pot) and a separate pulse out.
So we have 3 keys that that are not connected to each other .
The lower knob sets the initial CV level & the upper knob sets the decay slope for that voltage.
How does one use such a device & why would Don B make such a controller?
I think the answer lies with his early interest in music concrete & in the playing back of recorded tape loops.
When each key is patched into a VCA the lower pot will open & close the gate, and the upper pot
will control the duration length of the sound. A three key controller like the 216, will allow you
to "play" 3 sounds.
A 10 key controller like the 114 will allow access to ten sounds.
This is why I believe Don also produced the 107 - voltage controlled mixer.
It's not just a mixer. It's really 10 VCAs.
The 10 keys on the 114 & the 10 inputs on the 107 seem to match and make a lot of sense.
If you are using a 216, with only 3 such keys a 292 is a good alternative VCA to match.
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