This model is a 2 way speaker system for audiophiles, and comes with two cabinets like the one shown.
The system is basically a high quality stereo speaker cabinet with a slow speed rotor on the woofer. In addition there is a “Space Generator” on the midrange and treble.
Collectively the 430 / 450 / 470 cabinets are known as the “Plus2 system”.
(Photo courtesy of “Cecil”)