More nice retro, if you like that sort of thing....

Page 3 - Seeking answers? Join the What HiFi community: the world's leading independent guide to buying and owning hi-fi and home entertainment products.

These things are huge! Not for me thanks, even in passive form. The plinths alone, would be a 2 man lift. I don't think these are useful outside a recording studio. Most domestic spaces are just not going to work with these.
I read in a show report that the prototype actives are called 40.3 D and are likely to cost about £25,000.