For the ultimate in extreme home theater, THX Certified to the level of Ultra and Select, the formidable KEF Ci-R Series Ci3160RLb-THX and Ci5160RLb-THX in-wall subwoofers deliver deep bass and theater-thumping output akin to traditional KEF subwoofers, with full theater sound quality. The Uni-Q driver acts as a single point source, enlarging the 'sweet spot' and evenly dispersing sound across the listening area while absorbing 99% of unwanted sound. Models Ci5160RLM-THX and Ci3160RLM-THX offer ultra-high performance true theater sound for large theaters and living rooms, both THX Certified Ultra classification. Four hybrid aluminum bass drivers provide tight, deep, and controlled bass. The 5.5mm thick precision-machined aluminum baffle eliminates vibration, offering a stable platform for powerful drivers. The paintable magnetic metal grille and optional black cloth grille allow seamless blending into the environment. Available in aluminum silver with tone-matched Uni-Q and bass drivers. Additional features include THX Certified High Performance, KEF Uni-Q Driver with Meta Technology, and two sizes: Ci5160RLM-THX and Ci3160RLM-THX. Explore the pinnacle of home theater audio performance with KEF Ci-R Series in-wall subwoofers. Specific warranty terms and details for KEF products can be found here.