THX® Certified Ultra. Extreme Home Theatre Bass. Architectural Perfection.

The KEF Ci3160RLb‑THX is a powerhouse in‑wall subwoofer engineered for Extreme Home Theatre performance. As a THX® Certified Ultra model, it meets the most demanding standards for output, accuracy, and cinematic impact — delivering the deep, visceral bass required for large home theatre environments while maintaining the clean, discreet aesthetics of architectural audio.

Designed as part of KEF’s flagship Ci‑R Series, the Ci3160RLb‑THX features three high‑output 160 mm sub‑bass drivers mounted to a massive, resonance‑controlled aluminium baffle. This rigid structure ensures exceptional clarity, low distortion, and tight, controlled bass even at high volumes. The result is a subwoofer that delivers the theatre‑thumping low‑frequency energy of a traditional cabinet sub — but seamlessly integrated into the wall.

For optimal performance, the Ci3160RLb‑THX is purpose‑built to pair with the KEF KASA500 system amplifier, with each amplifier capable of powering up to two Ci3160RLb‑THX units. This makes it ideal for large, immersive home theatre installations where uniform bass coverage and high output are essential.

Engineered with the same design philosophy as professional studio monitors, the Ci3160RLb‑THX recreates the filmmaker’s final mix with precision. Explosions hit harder, musical scores gain depth, and low‑frequency effects become more lifelike — all while maintaining the tonal balance and accuracy expected from THX‑certified systems.

A perfect choice for dedicated cinemas, luxury media rooms, and high‑end residential theatres, the Ci3160RLb‑THX delivers uncompromising bass performance in a beautifully integrated architectural form.