Yes, I saw a demo like that I think in Disneyland.

I was wrong about the series. Mine are the Series 2. I found the attached PDF that describes their design and even includes schematics. I have the 3-terminal version which was intended for some kind of a virtualized Bose never introduced. Have a look t that schematic. Both woofers operate across the entire frequency range. shocked
M100,VP160,QS10HPx2,EP800,M5HP,M3,M50 v4
M80,VP150,QS8x4,EP600 v2
Air N2