Hi Nick

> 1. The schematic for the A-110 shows Linear FM and Soft Sync
> options. Are these possible

I added them and it works fine (to be true: I did not add, but I moved
the log-FM-Input to the lin-FM-connector and did the same with
soft/hard-sync. I hope there will be some day, I will add switches to
the module...

> 2. What value pot/resistor would need to be added to make a Fine
> tune control for A-110, and where to connect on circuit board I
> compared 110 to 111 visually, couldn't decide....

If you want to add an pot then add the combination of R9/P1/R5 (connec
it to the same point). The value of R5 defines the amount of the tuning
pot. A value of 10 Mega-Ohms should be good for a fine tune pot (this
value is estimated).

> 3. Has anyone added CV control to A-140, 145, 146

You need completely different circuits to CV-control the ADSR or LFO.
Due to this A-141 and A-147 exist.

> 4. Has anyone tried to add Resonance Insert to any filters,
> especially the Wasp I did.....mixed results.

I do not have the wasp filter, but I did it with other filters. As you
said: The results are mixed. There are some modules, which have an
remarkable effect on a normal audio signal, but the effect in a
resonance loop is quite boring (the opposite is also valid).
I personally like to distort/waveshape the resonance signal; a phaser in
the resonance loop is not that amazing ;-)

There is also one aspect to be kept in mind: The effect of the resonance
depends completely on the phase relation of the signal. So: If a module
reverts the phase of the signal, the amount of resonance may change
completely. So perhaps a A-175 is required to revert the phase again.


Florian