that is fascinating
I would hazard - Tad et703, then... well, the end of that brass horn looks to be 1" at a guess, so I'd say a 1" compression driver - the 2002 seems a good guess.
Then an S2, then presumably a 15" of some sort or a 12" in the 'thunderbolt esque' cab
http://website.lineone.net/~empson/thunderbolt cutaway tidy small.jpg
On a previous conversation with Kevin, he'd mentioned using two tweeters above the S2. From what I've read and seen the S2 doesn't extend that high so certainly needs a tweeter.. Two... well that's somethin else, and one with a pinnochio style brass horn, certainly makes for a talking point !
When I heard the earlier prototype (shown in the link) with the Lab Subs to the sides, the sound was incredible, truly awesome.
On it's own though (without the lab subs) I couldn't have personally lived with the lack of bass extension (in that room/with that system).
It will be interesting to see what low bass cabinet is employed to go with this new statement product - perhaps a W bin like the earlier LV horn speakers, or a folded horn like the Lab sub?
We will have to wait and see.
Kudos to Kevin though..... he stands apart, and if imitation is the sincerest form of flattery my own horn system pays quite some homage to my visits to Living Voice.