Patches and discussion for Ensoniq VFX family

Hi.  I'm a big fan of Ensoniq synthesizer.
SQ-80 had analog filter, but after that, all VFX family does not 
have resonant filter.
I have VFX and TS-10, and Trying to simulate analog resonant 
filter sound.
How can I do this??????Is it possible???Resonant Transwave 
is for that porpose??? or Do I have to buy some V.A.s???
Is VFX not for analog sound, period????
I don't know how to utilize Resonant Transwave well.....
Any Advice or tip would be greatly appreciated.....