What are the dimensions and speaker sensitivity? I'm also interested in knowing if they are active subs.
I'm pretty sure these subs are Rick's Whomp (or Abisso subwoofer) design which uses a Peerless XLS and a powerful amp. The Whomp subs in custom enclosures sold for $1,195 each and these speakers each have a built-in Whomp sub. I believe the top speaker is basically a built in Tanzanite, which sold for over $1,900-2,800 a pair.
http://www.selahaudio.com/id1.htmlJeff can confirm but I imagine these speakers produce some really powerful bass and the cabinets are solid and heavily braced.