The room is neither live nor flat. I will do some reading. I am almost certain it would lead me to rearrange the room slightly. I will include a picture tomorrow. Regardless, it's very clear and enjoyable. My wife echos those comments despite the fact that she would never care for these things. That's a good sign of achievement already. I might go and do auditioning again just for a comparison!
Does the 15" sub provide more tighter frequency range than the smaller ones? I mean what would be the advantage over a smaller sub if the room volume isn't that large ?