My HT is in the basement. Carpeted, concrete walls, and wood rafters, and open air. Speakers are spaced for small room. TV and Mains are 6 feet for viewing and sound. Side surrounds are a bit behind with tweeters 3 feet above ear level. Front R and L are on wood TV trays with tweeters at exactly ear level. The center channel is below TV on a 4 sided open shelf. Denon room correction calibration is right on. My adjustable bed is the listening positiion....lol. Movies and some internet music are music to my ears with these ELAC speakers. Her TV is in the living room, all to herself. lol We have been retired since 2008 and 10 respectfully.
I still have some Klipsch and JBL bookshelf speakers, collecting dust, in the controlled basement.