[sdiy] Modding the MKS-3(7?)0 - Looking for suggestions

[Colin f]

> > I would be happy with a simple 12/24 switch. In fact, I would be
> > happy if it was hard wired in 12 dB/oct mode, but that's just me.
> If the VCF of the JX10 is an IR3109, then simply pick the 
> VCF-out signal 
> from pin 10 instead of pin 15. Works like charme.

JX10 VCF is IR3R05 - a cascaded pair of 12db/oct SVFs.
According to the MKS80 service notes, one filter is an LFP, the other a BPF.
There is a VCA on there too, so there is no direct output from the filter.

Cheers,
Colin f