The front centers of mine are currently 4.5ft from the back and 4.5ft from the sides. They are spaced 12ft apart. MPL is a bit closer then I like at 10ft from the front centers but it seems to work. The stage is quite wide and presents a fantastic image with well recorded stuff (although I’m not sure they intend it to be that wide). Some music I need to listen to again on headphone and/or a more conventional setup because image wise what I think was intended as room reverb sounds weird as the room is in front of me and not around me.