Alright, example.
I think I have posted pictures of my dorm room. If you remember it had a loft (3 beds in a wooden frame 4 feet high across the entire room). Anyways, I was sitting under the loft with my axioms. We just took it down, and my axioms sound entirely different. More open, I think. The room is long, 20 feet. And now that the couch is out of here and the beds are on the ground, the room is really reflective, so sometimes I think it sounds like the music is getting out of control because of all the late reflections I'm hearing.
My room at home is 12x12. I'm moving back in 3 days, and my axioms sounded the best there. Bass was huge and they sounded very nice.
Something about the quick reflections of a room are nice in some speaker setups. To simulate these quick reflections, you could probably invest in some wall treatements as reflecting points. I bet that would help "bring in the walls" of your room quite a bit.
Good luck!
