The KEF Ci5160REFM-THX is built to deliver reference-quality cinema sound while remaining entirely hidden within your decor. As part of the prestigious Reference Series, this In-Wall speaker combines a 12th generation Uni-Q driver array with Metamaterial Absorption Technology to eliminate unwanted sound reflections from behind the tweeter. The result is exceptionally accurate sound dispersion across large seating areas, making every seat the ideal listening position in high-end Architectural audio systems.Deep, controlled bass without room clutter:Equipped with four 160mm bass drivers, this unit produces articulate low-frequency performance down to 32Hz without requiring floor-standing enclosures. A dedicated vented motor system is calibrated specifically for hidden wall cavities, ensuring heat dissipates efficiently during high-output playback. Whether deployed individually as each channel or integrated alongside broader In-Wall/In-Ceiling layouts, these Speakers retain precise control over heavy dynamic transitions, keeping dialogue crisp and action sequences impactful.Certified performance for expansive spaces:Meeting THX Certified Dominus standards, this system is capable of filling substantial home theatres with clear, undistorted audio at reference volume levels. For those selecting premium instock custom-installation components that balance aesthetic discretion with uncompromising acoustic output, this flagship model offers seamless soundstage integration for modern living spaces. THX Certified Dominus: Guarantees reference-level sound pressure and low distortion in extra-large home cinema rooms. 12th Generation Uni-Q Driver Array: Acts as a single point source to distribute sweet-spot clarity across the entire listening area. Metamaterial Absorption Technology (MAT): Absorbs 99% of rear tweeter distortion for pure, natural treble response. Quad 160mm Bass Drivers: Delivers punchy, extended low frequencies down to 32Hz without external subwoofers. Vented Motor Design: Prevents dynamic compression during loud listening sessions by keeping voice coils cool inside the wall.