KEF Ci250RRM-THX In-Ceiling Speaker (Unit)
Key Features
THX Certified Ultra
The Ci250RRM THX is engineered for demanding home theater applications and carries THX Certified Ultra certification.
12th Generation Uni Q Driver Array
The advanced Uni Q architecture integrates the midrange and tweeter into a coherent acoustic source for precise imaging and consistent sound dispersion.
Metamaterial Absorption Technology
MAT helps absorb unwanted high frequency energy behind the tweeter, producing cleaner and more natural treble.
Powerful 10 Inch Low Frequency Driver
The dedicated 250 mm / 10 inch LF driver provides substantial bass output and cinematic scale.
4 Inch Uni Q Midrange
The 100 mm / 4 inch Uni Q midrange is designed to deliver natural vocals, dialogue and detailed midrange reproduction.
Vented Aluminium Dome Tweeter
The 19 mm / 0.75 inch vented aluminium dome tweeter works with MAT to provide detailed and controlled high frequency reproduction.
Cavity Radiation Control
KEF's patent pending CRC technology helps reduce unwanted midrange cavity effects associated with coaxial three way designs.
Low Diffraction LF Aperture
The carefully profiled LF aperture helps reduce resonance and diffraction around the driver assembly.
Ultra Thin Bezel
The ultra thin bezel provides a clean architectural appearance once installed.
IP64 Rated
The speaker is rated IP64 for splash water and dust protection, making it suitable for selected demanding installation environments.
Paintable Magnetic Grille
The magnetic grille can be painted to match the surrounding ceiling for a seamless architectural finish.
Ideal Uses
Dedicated Home Theater
Perfect for premium front, surround or overhead applications in a dedicated cinema.
Dolby Atmos Home Theater
An excellent choice for high performance overhead channels in a properly designed Dolby Atmos system.
Private Cinema
Designed for customers who demand high output and immersive performance from architectural speakers.
Large Living Rooms
The powerful 10 inch driver makes the Ci250RRM THX suitable for spacious living and entertainment areas.
Luxury Media Rooms
A discreet solution for customers who want premium cinema sound without visible conventional speakers.
Custom AV Installation
Ideal for professional AV integrators, architects and interior designers.
Key Benefits
✔ THX Certified Ultra
✔ 3 Way Coaxial Architectural Design
✔ 12th Generation Uni Q Driver Array
✔ Metamaterial Absorption Technology
✔ 10 Inch Low Frequency Driver
✔ 4 Inch Uni Q Midrange
✔ Vented Aluminium Dome Tweeter
✔ Cavity Radiation Control
✔ Low Diffraction LF Aperture
✔ Up to 111 dB Maximum SPL
✔ 120 Degree Nominal Coverage
✔ Ultra Thin Bezel
✔ Paintable Magnetic Grille
✔ IP64 Certification
✔ Premium In Ceiling Installation
Technical Specifications
| Sales Package | KEF CI250RRM Architectural Speakers |
| General | |
|---|---|
| Brand | KEF |
| Model | CI250RRM |
| Color | black |
|
Nominal Impedance
|
8 Ohms |
|
Recommended Amplifier Power
|
50 - 250W |
|
Sensitivity (2.83V/1m)
|
89dB |
|
Recommended High-pass Filter (Hz)
|
30 - 60Hz |
|
Frequency Response (±6dB) Open-backed
|
28Hz - 20kHz |
|
Frequency Range (-10dB)
|
20Hz - 45kHz |
|
Nominal Coverage (Degrees)
|
120 |
|
Max SPL
|
111dB |
|
Crossover Frequencies
|
540Hz, 2.6kHz |
| Dimension | |
|---|---|
| Dimension |
Diameter Ø: 346mm (13.62in.)
Depth: 175mm (6.89in.)
|
| Weight | 6kg |
| Warranty | |
|---|---|
| Warranty Type | Official Manufacturer Warranty |
| Warranty Period | 1 year |
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