1. My loudspeakers are floor-standers
2. The gap between my loudspeakers and front wall is 550mm
3. The gap between my loudspeakers and the nearest side wall is 550mm
4. My room's ceiling height is 2,400mm front wall 4,500mm back wall
5. My room's width (L-->R) is 5,400mm
6. My room's length...