MOTM

So basically all that's going on here is 120 in sub mode with the SY2 as its only 
input.  The thing that seems to make it interesting is the SY2's "tone bend," which 
appears to be an AD EG modulating the filters' cutoff.  The input volume to the 120 
sometimes has a big effect on things as well.
The SY2 has an HP & LP with Yamaha's typically restrained resonance--I believe 
Crow used one to reverse engineer the 485.  Though I haven't tried it, I'm guessing 
you might could do something similar with a 480 modulated by an 800 (or an Oakley 
little EG)--high resonance settings seem to help.
I hope the effect isn't too ho hum for everybody--it's been keeping me entertained off 
and on for the past week, but perhaps I'm easily amused.

Tom