my room is 20 X 13.6 X 8. It is connected to my kitchen area. It is basically one big open room split into two sections. There isn't any barrier between the two. With that in mind it adds another 20 x 13.6 x 8 behind my couch where I sit.

7.1 theater room
60 fronts vp180 center 4 qs8's ep500 sub

3.0 tv room
m3's vp150 center