KEF
KEF Ci250RRM-THX In-Ceiling Speaker
KEF Ci250RRM-THX In-Ceiling Speaker
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Description
KEF’s First Architectural Speaker with MAT™
Pushing technological boundaries
Cavity Radiation Control (CRC)
The latest patent-pending technology developed by the KEF Engineering team in the UK; Cavity Radiation Control (CRC) is a unique open-back midrange with acoustically absorptive foam design that eliminates midrange issues including frequency response dips of up to 30dB in magnitude, found in typical coaxially arranged three-way designs. With CRC, Ci250RRM-THX delivers the highest midrange acoustic realism among three-way coaxial loudspeakers to date.
Low Diffraction LF Aperture
Ci250RRM-THX features Low Diffraction LF Aperture, a carefully profiled, smoothed housing design with an outer acoustically absorptive foam ring that reduces resonance and diffraction. As a result, it delivers exceptional MF/HF performance while preserving a tremendous bass output.
Uni-Q®Sit anywhere, hear every detail
Uni-Q technology is the building block of KEF signature sound. Designed to perform at its best in Ci250RRM-THX, the remarkable 12th generation Uni-Q driver array acts as a single point source, dispersing sound more evenly allowing everyone sitting at different spots in the room to experience the same natural detailed sound.
MAT™Absorb 99% of the unwanted sound
The Ci250RRM-THX is the first architectural speaker that benefits from our acoustic innovation: Metamaterial Absorption Technology (MAT™). MAT is a highly complex maze-like structure that absorbs 99% of the unwanted sound from the rear of the tweeter, delivering a more crisp, natural treble performance.
Powerful, high-fidelity sound
Featuring a 250mm (10 in.) LF driver, Ci250RRM-THX delivers deep, room-filling bass down to 28Hz. Together with the 100mm (4 in.) Uni-Q driver array with MAT, Ci250RRM-THX delivers powerful, high-fidelity sound with maximum SPL of 111dB.
Designed to perform
Ci250RRM-THX is splash water and dust proof with IP64 certification. With a well-considered mechanical design, Ci250RRM-THX ensures ease of installation with minimum of fuss.
Specifications
Specifications
| Nominal Impedance | 8 Ohms |
| Sensitivity (2.83V/1m) | 89dB |
| Frequency Response (±6dB) Open-backed | 28Hz - 20kHz |
| Frequency Range (-10dB) | 20Hz - 45kHz |
| Nominal Coverage (Degrees) | 120 |
| Max SPL | 111dB |
| Crossover Frequencies | 540Hz, 2.6kHz |
| Drive Units | LF: 250mm (10in.) MF: 100mm (4in.) Uni-Q HF: 19mm (0.75in.) vented aluminium dome with Metamaterial Absorption Technology1 |
| Recommended Amplifier Power | 50 - 250W |
| Recommended High-pass Filter (Hz) | 30 - 60Hz |
| Product External Dimension | Diameter Ø: 346mm (13.62in.) Depth: 175mm (6.89in.) |
| Cut-out Dimensions | Diameter Ø: 300mm (11.81in.) |
| Net Weight | 6kg (13.2lbs) |
| Mounting Depth from Surface | 168mm (6.62in.) |
| Optional Rough In Frame | - |
| Certification | THX® Certified Ultra |
| Safety and Regulatory Compliance | IP64 |
| Ceiling thickness (Maximum) | 30mm (1.18in.) |
| Ceiling thickness (Minimum) | 6mm (0.24in.) |
| Downloads | Manual Individual Information Spec. Sheet Architectural Speaker Brochure Product Group Spec. Sheet Minimum Cabinet Volume Chart Cutout Template EASE GLL DATA Product Drawing Selection And Setup Guide Architectural Speaker Accessory Guide Extreme Home Theatre Info Sheet White paper |
| Remarks | KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. THX, the THX logo, and Ultra are trademarks of THX Ltd. THX and the THX logo are registered in the U.S. and other jurisdictions. All rights reserved. |
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KEF Ci250RRM-THX In-Ceiling Speaker
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Delivery & Returns
Delivery & Returns
We offer FREE delivery to the mainland UK (excluding Channel Islands, Isle of Man, Isle of White, Isles of Scilly, and some of the remote Scottish Isles).
For other areas please contact us for a quote. Select items can be delivered internationally by prior agreement. Again please contact us for a quote. We will always do our best to help.
Our aim is to dispatch goods within 2 working days of an order being placed. Please allow 5 working days from the time of your order to receipt of item. If an order is expected to take longer than this our order fulfillment department will contact you to inform you of this.
Where multiple items are ordered, we will dispatch them all in one package. If you have ordered any special or customized items, or items otherwise not immediately available, we will dispatch the order when all items are available. If you have any concerns regarding this, please contact us and we will do are very best to help you.
