KEF Ci250RRM-THX Ceiling Speaker
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The KEF Ci250RRM-THX is an elite 10-inch in-ceiling speaker built for premium residential and commercial audio systems where reference-grade performance and architectural discretion are key. As part of KEF’s THX Certified Dominus series, the Ci250RRM-THX is engineered to deliver cinematic-scale sound with pinpoint accuracy, even in the largest home theaters and media environments.
Featuring KEF’s innovative MAT (Metamaterial Absorption Technology) and an advanced Uni-Q driver array with a 100mm (4") midrange and 25mm (1") tweeter, concentrically mounted within a powerful 250mm (10") woofer, this speaker offers extraordinary clarity, detail and wide dispersion. The MAT technology significantly reduces unwanted distortion and coloration, enabling the Ci250RRM-THX to achieve exceptionally accurate frequency response and low distortion even at high volumes.
Optimised using state-of-the-art acoustic modeling and simulation techniques, the Ci250RRM-THX maintains tonal integrity and immersive imaging across a broad listening area. Its THX Dominus certification, the highest performance class in the THX family ensures it can confidently reproduce theater-level dynamics and sound pressure in large rooms, making it suitable for high-end distributed audio, reference home theaters and demanding commercial applications.
Professional-grade features such as a rigid aluminum front baffle, magnetic paintable grille and robust mounting system ensure seamless architectural integration and secure installation, even in challenging environments.
Frequency Response: 28Hz - 20kHz
Impedance: 8 ohms
Sensitivity: 89 dB (1W@1M)
Power Handling: 50 - 250 watts
Drivers: 10-inch bass driver, 4-inch Uni-Q midrange driver and a 0.75-inch tweeter
Overall Dimensions (with grille): 346 mm x 175 mm
Cut-Out Dimensions: Diameter 300 mm
Mounting Depth: 175 mm
Weight: 6 kg
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KEF THX Certified Speakers
KEF THX Certified speakers represent the pinnacle of architectural audio, delivering cinema-grade performance for in-wall and in-ceiling installations. Built to meet the exacting standards of THX Ultra or Select certification, these speakers ensure reference-level sound quality for dedicated home theaters and high-performance audio environments.
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Shipping is FREE of charge for orders over £100. Shipping costs will apply to all orders under £99, and will be added at checkout. Unfortunately at this time we are unable to accept orders for items being shipped to Ireland, the Isle of Man or the Channel Islands.
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