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

https://www.google.ca/url?sa=t&source=web&rct=j&url=https://www.audiolabga.com/pdf/BOSE601II.pdf&ved=2ahUKEwiar4y32tngAhUI11kKHZngDGIQFjACegQIAxAB&usg=AOvVaw1I-4WdaytPQBRj92IsdMSj
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M100,VP160,QS10HPx2,EP800,M5HP,M3,M50 v4
M80,VP150,QS8x4,EP600 v2
ADA-1000-2,3,1500-3
Air N2