The Ci3160RLM-THX is an in-wall architectural speaker that incorporates the 12th iteration of the Uni-Q driver array, which has been optimized for maximum performance, and KEF's revolutionary Metamaterial Absorption Technology (MAT™). proudly bearing the THX Certified Ultra title and realizing its full potential. It has two 6.5" hybrid aluminum bass drivers and produces the most dynamic audio experience for home theaters.