I'm going to buck just about everyone here, but hear me out.
I'm also in a 10'x12' room with a pair of monitors very similiar to the C1's. I auditioned both extensively when I went to replace my B&W Silver Signature's.
I also tried a Pass XA30.5 amp, thinking that it would be enough power in the small room. It wasn't! You need power for the C1's, just like I do.
Now here's the kicker. My chair is centered and up against the back wall. My speakers are 8' from the front wall, 4' from my head. I have no room treatments other than crown molding because of where the speakers are located.
A good friend and super audiophile set my room up this way for me, and I freaked out when I saw it. Then I sat down and the soundstage was not in my face, but back behind the speakers. The real blessing was that my soundstage was much deeper than it had ever been before.
It may break every standard audio setup, but it is insanely good. Everyone who walks into my room thinks that they're going to be blasted out, but after they sit down and listen, it's nothing but smiles at what they're hearing.
Chuck