That's a nice sized listening area (reminds me of the 11'x11' space I used to use in our old house's 11'x19' living room). As with my old living room, the speakers "see" the whole volume of the room even if the listening area is only half of the room - which speaks well of the 7075 (the efficient nature of those Klipsch's obviously factors in as well, of course).

I'll be curious to see what the efficiency is on Hsu's upcoming speakers . The horn tweeter should yield some Klipsch-like efficiency numbers - a system of those and a 7075 could be a great mix.