Skip disability assistance statement.

Welcome to our website! As we have the ability to list over one million items on our website (our selection changes all of the time), it is not feasible for a company our size to record and playback the descriptions on every item on our website. However, if you have a disability we are here to help you. Please call our disability services phone line at 215-997-4300 during regular business hours and one of our kind and friendly personal shoppers will help you navigate through our website, help conduct advanced searches, help you choose the item you are looking for with the specifications you are seeking, read you the specifications of any item and consult with you about the products themselves. There is no charge for the help of this personal shopper for anyone with a disability. Finally, your personal shopper will explain our Privacy Policy and Terms of Service, and help you place an order if you so desire.

The Best TV Shop Near Doylestown, PA

Ci250RRM-THX

Kef SP4023AA

Quick Specs

  • Type: Speakers
 
KEF's First Architectural Speaker with MAT ™

Featuring innovative technologies including 12 th Generation Uni-Q ® driver array with Metamaterial Absorption Technology (MAT), patent-pending Cavity Radiation Control and Low Diffraction LF Aperture, Ci250RRM-THX is a truly revolutionary coaxial three-way architectural speaker that delivers immersive, high-fidelity soundstage with unmatched sonic excellence for large home theatres and living rooms.

Pushing technological boundaries

KEF always pushes the technological boundaries in its mission to create the best possible sound; Ci250RRM-THX is the physical manifestation of that drive.
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 Technology 1
Recommended Amplifier Power 50 - 250W
Recommended High-pass Filter (Hz) 30 - 60Hz
Product External Dimension Diameter (dia): 346mm (13.62in.)
Depth: 175mm (6.89in.)
Cut-out Dimensions Diameter (dia): 300mm (11.81in.)
Net Weight 6kg (13.2lbs)
Mounting Depth from Surface 168mm (6.62in.)
Optional Rough In Frame -
Ideal Rear Volume 150L
Minimum Rear Volume 80L
Certification THX ® Certified Ultra
Safety and Regulatory Compliance IP64
Ceiling thickness (Maximum) 30mm (1.18in.)
Ceiling thickness (Minimum) 6mm (0.24in.)
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.

Quick Specs


  • Appearance

  • Type: Speakers

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.