Intensely Immersive - KEF Ci4100QL-THX In-wall Speaker The KEF Ci4100QL‑THX delivers full-range, reference-level audio for high-end home theatres. Its four-driver configuration provides rich, detailed sound with clarity across the entire frequency spectrum. You experience cinematic effects and music with precise imaging, natural mids, and extended highs that fill the room without visible bulk. Certified THX Ultra2 and Select2 certification ensures the Ci4100QL‑THX meets strict standards for output, frequency response, and distortion. It reproduces sound exactly as intended, providing consistent reference-level performance that matches large, dedicated cinema setups while remaining flush-mounted in your walls. Powerful Two 100 mm woofers and two 25 mm aluminium dome tweeters generate balanced, dynamic output. The speaker handles high power while maintaining detail and control. You get deep, controlled bass, clear vocals, and sparkling highs that stay coherent even at elevated volumes. Flexible The Ci4100QL‑THX suits stereo, LCR, or surround layouts. It integrates seamlessly with passive or active amplifier systems and pairs naturally with KEF’s KASA500 amplifiers for enhanced output. Its wide dispersion keeps sound uniform across the listening area, eliminating “sweet spot” limitations. Discreet The ultra-thin paintable bezel and magnetic grille allow the speaker to vanish into your décor. Installation stays flush with walls, maintaining clean visual lines. Despite its subtle footprint, the speaker delivers impactful, room-filling sound that competes with larger free-standing units. Reliable Dog-leg mounting clamps secure the speaker firmly into drywall or plasterboard. Slim mounting depth and compatibility with standard wall cavities make it suitable for both retrofit and new-build installations. Once installed, the Ci4100QL‑THX remains stable and delivers consistent, high-performance audio for years. The KEF Ci4100QL‑THX combines certified performance, precise imaging, and discreet in-wall design. It delivers immersive, high-fidelity sound for home theatres that demand both power and elegance. Specification Value Nominal impedance 8 Ω Sensitivity (2.83 V / 1 m) 88 dB Frequency response (±3 dB) 52 Hz – 35 kHz Crossover frequency 3.5 kHz Drive units 2 × 100 mm woofers, 2 × 25 mm aluminium tweeters Recommended amplifier power 10 – 150 W Maximum SPL 110 dB Product external dimensions (H × W × D) 625 × 230 × 88 mm Cut-out dimensions (H × W) 590 × 200 mm Mounting depth from surface 85 mm Wall thickness (min – max) 6 mm – 40 mm Net weight 6.8 kg Certification THX Ultra2 / Select2
