The KEF Ci250RRM-THX is a high-performance architectural in-ceiling speaker engineered for ultimate audio fidelity in commercial and residential installations. Certified by THX® Ultra, it guarantees cinema-quality sound with precise imaging, deep bass, and crystal-clear treble. The speaker features KEF’s revolutionary Metamaterial Absorption Technology (MAT™) in the tweeter, which eliminates unwanted resonances and distortion, delivering unmatched clarity and detail. Equipped with a 250 mm (10-inch) low-frequency driver, a 100 mm Uni-Q midrange driver, and a 19 mm vented aluminium dome tweeter, the Ci250RRM-THX achieves a frequency response from 20 Hz to 45 kHz, ensuring full-range, immersive sound reproduction. Designed for seamless integration, it fits flush in ceilings with variable thicknesses, offering a discreet, elegant solution without compromising performance.
Features
- THX® Certified Ultra – Delivers cinema-quality sound, precise imaging, and deep, impactful bass for professional and home installations.
- Metamaterial Absorption Technology (MAT™) – Eliminates unwanted resonances in the tweeter, providing ultra-clear, distortion-free high frequencies.
- Multi-Driver Configuration – Includes 250 mm LF, 100 mm Uni-Q MF, and 19 mm vented aluminium dome HF drivers for full-range sound reproduction.
- Wide Frequency Range – 20 Hz – 45 kHz (-10 dB) ensures immersive, detailed audio across the spectrum.
- High Sensitivity & Output – 89 dB sensitivity with maximum SPL of 111 dB produces room-filling sound with minimal amplification.
- Precision Architectural Design – External diameter of 346 mm and cut-out diameter of 300 mm fits seamlessly into ceilings, with mounting depth from surface of 168 mm.
- Robust & Compliant – Rated IP64 for moisture resistance, suitable for bathrooms, kitchens, and other challenging environments.
- Versatile Installation – Nominal coverage of 120°, recommended amplifier power 50–250 W, and high-pass filter range 30–60 Hz for easy integration with any system.
Specifications
| Specification | Details |
|---|---|
| Nominal Impedance | 8 Ohms |
| Sensitivity (2.83V/1m) | 89 dB |
| Frequency Response (±6dB) Open-backed | 28 Hz – 20 kHz |
| Frequency Range (-10dB) | 20 Hz – 45 kHz |
| Nominal Coverage (Degrees) | 120° |
| Maximum SPL | 111 dB |
| Crossover Frequencies | 540 Hz, 2.6 kHz |
| Drive Units | LF: 250 mm (10 in.), MF: 100 mm (4 in.) Uni-Q, HF: 19 mm (0.75 in.) vented aluminium dome with Metamaterial Absorption Technology |
| Recommended Amplifier Power | 50 – 250 W |
| Recommended High-pass Filter (Hz) | 30 – 60 Hz |
| Product External Dimension | Diameter Ø: 346 mm (13.62 in.), Depth: 175 mm (6.89 in.) |
| Cut-out Dimensions | Diameter Ø: 300 mm (11.81 in.) |
| Net Weight | 6 kg (13.2 lbs) |
| Mounting Depth from Surface | 168 mm (6.62 in.) |
| Optional Rough-In Frame | – |
| Certification | THX® Certified Ultra |
| Safety and Regulatory Compliance | IP64 |
| Ceiling Thickness (Maximum) | 30 mm (1.18 in.) |
| Ceiling Thickness (Minimum) | 6 mm (0.24 in.) |
T2S6M5E5/00-BKM
No products in the cart.
Reviews
There are no reviews yet.