a couple of questions on the mf 107

The Moog Forum Moogerfooger Forum
1

Hi all,

I’m eagerly awaiting my first moogerfooger, the 101 which is currently on Santa’s sleigh. I’ve now started to think about getting the freqbox as well as I figured then I’d pretty much have a nice simple analogue monosynth. But before I order it, I’ve got a couple of questions…

I understand that the freqbox tracks the incoming signal and with OSC sync on will output at the same frequency as the input. Does the oscillator on the freqbox also follow the amp envelope of the sound…so if I inputted my Access Virus with a slow attack for example, would the freqbox osc fade in as well? Also, if the sound that I inputted had portamento…would the oscillator follow?

I’m also curious about the CV modulation between the filter and the freqbox…I know that experimentation is the key but as I don’t actually have them I’m just wondering about the possibilities. If I were to connect the frequency of the osc on the 107 to the cutoff of the 101 would that be too fast to create LFO type filter modulation?

I know these are noobish questions…I would love to demo these modules but as I live in the middle of nowhere in England this is a bit difficult.

All help much appreciated, thanks.

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The FB does indeed track the volume of the audio input and control the amplitude of the osc. You can use your Virus out as a pseudo envelope generator. I did this before with my SH-101, using the envelope to control the envelope of my FB. I also used a very tweakable analog drum sound to make some nice envelopes.

I don’t know much about the Sync, but I don’t remember getting the FB to track pitch from the audio input. Other people have experimented more than I have with this.

I know the frequency input responds from -5v to +5vDC control voltage. That responds to portamento as well. You can get a midi to CV converter to drive the FB. The Lowpass filter responds the same way to the frequency in but 0 - +5vdc.

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Yes, the osc on the freqbox is too fast to be use as an lfo, although, with a negative cv it may be possible to slow it to a point where it works as an lfo, not that it sounds bad as higher frequency modulation, also without a way to attenuate the osc you will only be able to modulate the cutoff with a fixed depth