I am starting a new house in August, and I am curious about whether my media room is "too square". The exact room dimensions are 17'8 by 17, with a 9' ceiling. Dolby recommends that a listening room not be "perfectly square". Is this room mathematically "not square" enough, or do I need to push one of the walls 6" or so? I'll use the room principally for home theater, but occasionally for audio-only listening. And I'm not building another house unless I win the Lotto Any advice would be greatly appreciated.