KEF Ci5120QLM-THX In-Wall Speaker
$2,800.00
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KEF Ci5120QLM-THX In-Wall Speaker
KEF's Ci5120QLM-THX represents the pinnacle of in-wall speaker engineering, delivering cinema-grade performance within your architectural space.
A versatile THX Certified Ultra In-Wall Speaker with MAT™
The Ci5120QLM-THX in-wall architectural speaker meets the growing demand for high-performance home theatre solutions in multipurpose rooms, where dedicated spaces are less common. Featuring a 12th generation Uni-Q driver array and our groundbreaking Metamaterial Absorption Technology (MAT), the Ci5120QLM-THX is THX Certified Ultra. It recreates high-impact cinema sound with best-in-class audio fidelity, making it ideal for large-sized rooms.
Key Features
Metamaterial Absorption Technology
Absorbs 99% of the unwanted sound
Uni-Q®
Acts as a single point source to enlarge the ‘sweet spot’ and disperse sound more evenly.
THX Certified
Ci5120QLM-THX delivers ultra-high performance with true theatre sound quality for large theatres and living rooms and it is THX® Certified Ultra.
Ultra-deep, clean bass
Four specially designed 120mm (4.75 in.) bass drivers provide long throw capabilities and low distortion.
Detailed, balanced sound
The 3-way system design and fully optimised crossovers allow each driver to be optimally configured for its specific role, elevating performance to another level.
Hide your speakers, not your sound
The paintable magnetic metal grille and Ultra-Thin Bezel (UTB) give it the appearance of a hidden speaker, allowing it to blend seamlessly into any environment

Specifications
| Feature | Details |
|---|---|
| Model | Ci5120QLM-THX |
| Series | Q Series |
| Design Type | 3-Way In-Wall Architectural Speaker |
| THX Certification | THX Certified Ultra (Large Rooms) |
| Nominal Impedance | 4Ω |
| Sensitivity (2.83V/1m) | 89dB |
| Frequency Response (±6dB) | 45Hz – 20kHz (open-backed) |
| Frequency Range (-10dB) | 38Hz – 20kHz |
| Max SPL | 105dB |
| Crossover Frequencies | 440Hz, 2.75kHz |
| Drive Units | LF: 4 × 120mm (4.75″) long-throw bass MF: 100mm (4″) Uni-Q HF: 19mm (0.75″) vented aluminum dome with MAT™ |
| Recommended Amp Power | 25 – 250W |
| Recommended High-Pass Filter | 35Hz – 100Hz |
| Nominal Coverage | 150° |
| Mounting Depth | 90mm (3.6″) |
| Cut-Out Dimensions (H × W) | 795 × 163mm (31.3″ × 6.4″) |
| External Dimensions (H × W × D) | 818 × 186 × 96mm (32.2″ × 7.3″ × 3.8″) |
| Ideal Rear Volume | 70L (minimum 35L) |
| Net Weight | 9.7 kg (21.4 lbs) |
| Safety / Compliance | IP64 (splash and dust proof) |
| Ceiling Thickness Range | 6mm – 36mm (0.24″ – 1.42″) |
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