GTL Sound Labs AE 963 Ultimate Home Theater Package (5) Ultimate Home Theater Package - Center, fronts & rears 5 - AE 963 Audiophile In-Wall Speakers with resounding chamber technolgy Easy Installation - Mount in standard 2x4 wall 16"OC Rated #1 in Blind Speaker Test, Installed in some of the finest home Install "Where only the Best will do!" at an incredible price.