My fireplace is in the center of the wall and my speakers are 4 feet in front of that wall. The center channel seems to emanate from the depths of the fireplace when the glass doors are pushed aside; I consider the fireplace an asset as opposed to a liability.
Maybe it's because one of my drivers is a Heil Airmotion Transformer, which is dipole, meaning music is projected front and rear, but I get an excellent holographic sound stage.