KEF Ci5120QLM-THX and Ci3120QLM-THX – New THX-Certified In-Wall Speakers
KEF expands its high-end architectural speaker lineup with two new models designed to bring Reference-level performance into integrated living and cinema environments. The KEF Ci5120QLM-THX and Ci3120QLM-THX feature the latest 12th-generation Uni-Q driver with Metamaterial Absorption Technology and carry THX certifications for large and medium-sized rooms. Engineered for uncompromising sound in an elegant, discreet form factor, they aim to deliver truly cinematic realism in custom installations.
- KEF continues to bridge high-end sound and modern living design with its latest Ci-Q Series models. The Ci5120QLM-THX and Ci3120QLM-THX deliver THX-certified performance with cutting-edge Uni-Q and MAT technology for pure, immersive sound.
For more than six decades, KEF has been a synonym for acoustic innovation and engineering precision. With the introduction of the Ci5120QLM-THX and Ci3120QLM-THX, the British manufacturer presents two new in-wall speakers designed to deliver reference-grade sound for home cinema and multi-purpose living spaces. Belonging to the KEF Ci-Q Series, both models merge THX certification, Uni-Q driver technology of the 12th generation, and Metamaterial Absorption Technology (MAT) to achieve remarkable clarity and realism even in compact form.
Key Facts
- Models: KEF Ci5120QLM-THX and KEF Ci3120QLM-THX
- Part of the KEF Ci-Q Series
- THX Certified Ultra (Ci5120QLM) and THX Certified Select (Ci3120QLM)
- Uni-Q driver array of the 12th generation with Metamaterial Absorption Technology (MAT)
- 3-way design with precision crossover network
- Four 120 mm long-throw woofers (Ci5120QLM) or two (Ci3120QLM)
- Ultra-Thin Bezel (UTB) design with magnetic, paintable grilles
- IP64 certified for flexible installation in various environments
- Available from November 2025
- SRP: € 1.750,- (Ci5120QLM-THX) and € 1.350,- (Ci3120QLM-THX)
THX Certification – Designed for True Cinematic Accuracy
Both models have been developed and tested according to THX’s rigorous standards. The Ci5120QLM-THX carries THX Certified Ultra classification for large rooms, while the Ci3120QLM-THX is THX Certified Select for medium-sized spaces. This ensures consistent, distortion-free sound with a linear frequency response and high dynamic range – essential for achieving the emotional intensity and realism of a true cinematic experience.
Uni-Q and MAT – Precision from the Inside Out
At the heart of both models lies KEF’s 12th-generation Uni-Q driver array, a coaxial design that radiates sound as a single point source for perfect dispersion across the room. The addition of Metamaterial Absorption Technology (MAT) further refines the performance by eliminating up to 99 percent of unwanted high-frequency resonances behind the tweeter. The result is an exceptionally clean, transparent treble response and a natural, highly detailed soundstage.
Engineering and Performance – Control Meets Power
The Ci5120QLM-THX features four, and the Ci3120QLM-THX two, 120 mm long-throw woofers for extended low-frequency reproduction with tight control. Both adopt a 3-way configuration with optimized crossovers, assigning each driver a specific frequency range for maximum precision. The decoupled chassis design minimizes mechanical vibrations, while the refined tweeter gap damper further reduces distortion. This meticulous engineering ensures equally impressive results for music, gaming, and cinematic soundtracks alike.
Design and Installation – Sound You Don’t See
True to the KEF Ci-Q Series design philosophy, these in-wall speakers blend seamlessly into their surroundings. The Ultra-Thin Bezel (UTB) frame minimizes visual impact, while magnetic, paintable grilles allow full color matching with room décor. IP64 certification ensures reliable operation even in humid or dusty environments, making the speakers ideal for diverse architectural and custom installation scenarios.
Price and Availability
The KEF Ci5120QLM-THX and KEF Ci3120QLM-THX will be available through authorized dealers starting November 2025. Suggested retail prices: € 1.750,- for the Ci5120QLM-THX and € 1.350,- for the Ci3120QLM-THX.
Conclusion – Reference-Level Sound, Seamlessly Integrated
With the Ci5120QLM-THX and Ci3120QLM-THX, KEF once again demonstrates its mastery in merging audiophile performance with architectural discretion. Combining THX certification, the latest Uni-Q driver generation, and MAT technology, these speakers offer professional-grade sound for modern living spaces and home cinemas where aesthetics and performance go hand in hand. For those seeking invisible integration without compromise, these models set a new benchmark in custom audio design. Further details and installation guidelines can be found at www.kef.com.
Technical Specifications
| Product | KEF Ci5120QLM-THX | KEF Ci3120QLM-THX |
|---|---|---|
| Series | Ci-Q Series | Ci-Q Series |
| System | 3-way | 3-way |
| Uni-Q Driver | 100 mm Uni-Q, 12th Generation | 100 mm Uni-Q, 12th Generation |
| Tweeter | 19 mm aluminium dome with MAT | 19 mm aluminium dome with MAT |
| Woofer | 4 × 120 mm long-throw | 2 × 120 mm long-throw |
| Frequency Response (±6 dB) | 45 Hz – 20 kHz | 50 Hz – 20 kHz |
| Sensitivity (2,83 V/1 m) | 89 dB | 89 dB |
| Impedance | 4 Ohms | 4 Ohms |
| Recommended Amplifier Power | 25 – 250 W | 25 – 250 W |
| Maximum SPL | 105 dB | 105 dB |
| Dispersion Angle | 150° | 150° |
| THX Certification | THX Ultra | THX Select |
| Protection Rating | IP64 | IP64 |
| Dimensions (H × W × D) | 818 × 186 × 96 mm | 536 × 186 × 96 mm |
| Cut-out Dimensions (H × W) | 795 × 163 mm | 513 × 163 mm |
| Weight (net) | 9,7 kg | 6,2 kg |
| Ideal Enclosure Volume | 70 l | 40 l |
| Minimum Enclosure Volume | 35 l | 20 l |
| Brand | KEF |
|---|---|
| Manufacturer | KEF |
| Distribution | GP Acoustics GmbH |
| More about this manufacturer at HiFi BLOG |
