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Question about the VCAs in IFM Denum and/or Dunst
MUFF WIGGLER Forum Index -> Ciat-Lonbarde  
Author Question about the VCAs in IFM Denum and/or Dunst
I have a IFM system for a while and sometimes things just dont click for a long time, I never understood 100% whats up with those VCAs, if I have one input and send a bipolar modulation, I will hear one side , a fade out and then either the normalized noise of the dunst or denum sound (or whatever is in the second input jack) on the other side, if I send unipolar, i just listen one side, but what drives me a little nuts is that, so far I could not make two different inputs go through left n right at the very same time, if I have 2 inputs and I send two unipolar modulations, one for each, no matter what polarity and offset I will either get just one output or no sound, but never left and right at same time. Any work around or are we sentenced to having a VCA that is either loud at left or at right, but never under any circumstance at both?

Not sure if you are still looking for an answer, but I believe this is the intended way the IFM VCAs work. From what I understand, they are based on analog logic; if you have two audio feeds it's the strength of a given channel's CV input to the VCA that determines which of the two gets through to their output. So if VCA CV1 > VCA CV2, the Left channel will output but when CV2 > CV1, then the Right channel will output....but never both.

I think it's a very cool VCA design and fits well the the concept of the system as a whole, but mentions of "stereo" are a bit misleading. You can get kinda pseudo nice sounding stereo if you modulate the VCAs at near audio rate, but for slower modulations, you don't get that sense of a full stereo field, but rather hard panned stuff.
MUFF WIGGLER Forum Index -> Ciat-Lonbarde  
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