[sdiy] Modding the MKS-30 - Looking for suggestions

[dj hohum]

Hi All,

I have an MKS-30 that long ago lost one of its roland blob filters (I
purchased it broken for next to nothing). I pulled a couple of the
working blobs out to play with them  because that was more interesting
to me than fixing an MKS-30.

Recently I've been thinking about modifying the analog paths of some
of my polysynths. In particular, I'd like to do something with the
JX-10 as I've had this love hate relationship with it for as long as
I've had it.

But, before I work on the cramped 12 voice JX-10 I've decided to
practice on the roomy and already written off MKS-30. So all of the
VCF/VCA chips have been removed and I've tested each DCO output and
made sure that everything else seems to be working. I have supports
installed and room for a board that's about 3 1/2 inches by 7 inches.

On that board I have to put 6 vcas and 6 vcfs. I'd like to do
something interesting with the synth, it does not have to be a general
purpose synth and it most certainly does not have to sound anything
like an  MKS-30, or for that matter, anything roland at all.

At this point I was thinking about putting simple LM13700 vcas in
there and I'm not yet quite sure what to put in as a filter.  The only
limitations are that I don't want to lose patch storage so there is
only the cutoff CV, the res CV, and the VCA CV to work with.

Again, I'm intersted in distinctive or unusual. I don't need yet
another bread and butter two VCO (DCO) polysynth. I'm not committed to
the LM13700s yet so any suggestion that uses the three CVs and
completes the audio path in a usable way is welcome.