The easiest would be to go in Patch Edit mode, then press "control" key. You press the Down arrow untill you get to the "control" screens (showed at the left of your LCD). Chose your weapon: Aftertouch, Modulation (CC1) and expression (CC11). For example assign CUT -63 to Expression and RES +63 to modulation.

THEN (the real fun), you save your patch, exit the Edit mode and press "control" again. Press arrow-down until you in the C1 ASSIGN screen. Assign C1 to Expression ... and BINGO. Play the sound, press the mod weel, resonance increase. Push the C1 slider ans the filter closes! And within your sequencer CC1 and CC11 will access those parameters.

Now that I showed you how flexible the thing is, let me tell you how underated it is: the keyboard has great action (one of the best that I know of, if you like "half-weighted" keys) I just LOVE those keys. As a studio unit it's great because it's a very flexible controler. And as a live instrument ... WELL, did you know that you could use the front sliders to control REZ or Cutoff in real time for EACH tone within your patch? One keypress and the sliders control the volumes of your tone, a keypress and it's the wave selection, a keypress and it's Attack (amp).

The cool thing is that you could assign C1 to affect Cutoff globaly for your patch, and the use the sliders to vary it for each tone within the patch (or Rez for each tone) ... anyway, see my point: CONTROL!! The downside is that the sliders and really usefull in live use or when editing a patch (real fast), since they send nothing to the MIDI Out (most of the time).

Finally I don't think that 1 EXP is that much of a limitation. I always considered my JV-90 as a controler. As such, it could have NO sound engine and it would still be a good unit. But I have a JV sound engine as an added bonus, the EXP slot to give it the twist that I want and the GS synth (you could have aonther JV synth instead of the GS for that option), wich is very usefull since it's COMPLETELY independant.

I love this synth, it sounds great and is not as plastic as my old Cs1x. I think I'll love it more when my Techno Collection card arrives though.

btw. Anybody know how to control Cutoff/Resonance via midi Controler change?

The only bugger about it is that you can only put one SR-JV80 card in it.

The JD800 Rom cards are supposed to be useble in the JV80, anybody know if you can use them in JV90?

The only reason for dreaming about another device is the lack of a sequencer.

I know, JV is pure synth, and that´s good! Does anyone else found out the killer sound from JvV, "Stackoid"!

If you like heavier music, it's the only one you need!

Of course, in addition to the organ sounds in "Keyboards of 60´s and 70´s".

And the internal Pipe organs...

When playing slower pieces, "Classy piano" is wonderful! Have anyone heard the "Stackoid 2" in one PCM card? Is it good?