The KEF Ci5120QLM is a premium 4-way architectural in-wall speaker from KEF’s acclaimed Q Series, designed to deliver reference-grade home cinema performance with THX® Certified Ultra precision. Engineered for serious home theatre enthusiasts, this speaker reproduces cinematic soundtracks with exceptional clarity, dynamics, and depth, providing a fully immersive audio experience. Its sophisticated driver arrangement ensures accurate, distortion-free sound across the entire frequency spectrum, making it ideal for front or surround channels in high-end installations.
Advanced 4-Way Driver Design
The Ci5120QLM features four 120 mm (4.75 in.) low-frequency drivers for deep, controlled bass, a 100 mm (4 in.) Uni-Q midrange driver for natural midrange reproduction, and a 19 mm (0.75 in.) vented aluminium dome tweeter with Metamaterial Absorption Technology (MAT™) for ultra-clear high frequencies. Carefully designed crossover points at 440 Hz and 2.75 kHz ensure each driver operates in its optimal range, delivering a seamless and expansive soundstage that fills the room evenly.
THX® Certified Ultra Performance
With its THX® Ultra certification, the Ci5120QLM meets the most stringent standards for home cinema speakers, providing high SPL output with minimal distortion and consistent tonal balance across a wide listening area. Its 4 Ω nominal impedance and recommended amplifier power of 25–250 W allow it to integrate seamlessly with high-performance AV receivers and amplifiers, producing dynamic, cinematic sound that reproduces dialogue, music, and effects with professional-grade accuracy.
Seamless Architectural Integration
Designed for in-wall installation, the Ci5120QLM combines high-performance audio with clean architectural aesthetics. Its slim profile, optimized cut-out dimensions, and mounting depth allow for easy installation in new construction or retrofit projects. With a recommended rear volume of 70 L and a minimum rear volume of 35 L, it delivers consistent acoustic performance while remaining flush with the wall surface for a discreet, elegant appearance.
Features
- 4-way in-wall Q Series speaker with THX® Certified Ultra
- 4 x 120 mm LF drivers, 100 mm Uni-Q midrange, 19 mm MAT™ tweeter
- Frequency response: 45 Hz – 20 kHz (±6 dB open-backed)
- Maximum SPL: 105 dB; Nominal coverage: 150°
- 4 Ω nominal impedance; 25–250 W recommended amplifier power
- Designed for flush-mount installation with precise cut-out dimensions
- Ideal rear volume: 70 L; Minimum rear volume: 35 L
- IP64-rated for durability in various environments
Specifications
| Specification | Details |
|---|---|
| Model | Ci5120QLM THX |
| Series | Q Series |
| Frequency Response Range | 45 Hz – 20 kHz |
| Frequency Response Remark | ±6 dB open-backed |
| Frequency Range (-10 dB) | 38 Hz – 20 kHz |
| Sensitivity | 89 dB |
| Nominal Impedance | 4 Ω |
| Nominal Coverage | 150° |
| Maximum SPL | 105 dB |
| Drive Units | LF: 4 x 120 mm (4.75 in.)MF: 100 mm (4 in.) Uni-QHF: 19 mm (0.75 in.) vented aluminium dome with Metamaterial Absorption Technology |
| Crossover Frequency | 440 Hz, 2.75 kHz |
| Recommended Amplifier Power | 25–250 W |
| Recommended High-Pass Filter | 35 Hz – 100 Hz |
| Product External Dimensions (H × W × D) | 818 × 186 × 96 mm (32.2 × 7.3 × 3.8 in.) |
| Cut-Out Dimensions (H × W) | 795 × 163 mm (31.3 × 6.4 in.) |
| Mounting Depth From Surface | 90 mm (3.6 in.) |
| Mounting Thickness | Maximum: 36 mm (1.42 in.)Minimum: 6 mm (0.24 in.) |
| Ideal Rear Volume | 70 L |
| Minimum Rear Volume | 35 L |
| Net Weight | 9.7 kg (21.4 lbs.) |
| Gross Weight | Single box: 12.8 kg (28.2 lbs.)Master box: 27 kg (59.5 lbs.) |
| Safety and Regulatory Compliance | IP64 |
| THX Certification | THX® Certified Ultra |
T3S0M1E4/55-BKM
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