This is a beginner's question, but here goes: As a piano player just learning organ, I'm using a Voce V5 sound module and motion sound rotating speaker (real rotation, but not as good as a Leslie, of course) to try to simulate a B-3. The sound isn't bad, but I notice when I play a gliss, it doesn't come close to the same bite and growl as I've heard with real B-3s. I'm grabbing several notes and gliding quickly, just like I've seen it done countless times.
Any ideas why? I know my setup is never going to sound exactly like the real thing, but this aspect seems particularly "off" while the general tone is much closer, relatively speaking. Thanks for any ideas...
P.S. I just saw Organissimo live and, well, I'm incredibly inspired from it. Brilliant stuff that's still rattling around in my head two days later...