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.

Virtual Showroom Tour
215-997-4300 927 Bethlehem Pk. Colmar, PA
The Best TV Shop Near Doylestown, PA

Ci4100QL-THX

Kef SP3831AA

Quick Specs

  • Type: Speakers
 
Features KEF s patented Uni-Q driver array

Ci4100QL-THX is a THX Certified Select in-wall speaker. A deep understanding of the filmmaking process and surround sound is at the very heart of every THX certified 2.1, 5.1 and 7.1 speaker system.

Ci4100QL-THX

Featuring KEF s sophisticated sit anywhere Uni-Q driver array, which places the tweeter in the acoustic centre of the bass/midrange cone, this allows both the tweeter and woofer to act as a single point source that disperses the sound widely and evenly throughout the room. Together with the discreet Ultra Thin Bezel (UTB) design, offering the slimmest possible visible rim around the speaker, the Ci-Q Series range gives you tremendous freedom to position the speakers where you please.
Nominal Impedance 4 Ohm
Sensitivity 89dB (2.83V/ 1m)
Crossover Response 2.2kHz
Frequency Response 55Hz - 28kHz ( 6dB) open backed
Drive Units LF: 3 x 100mm (4 in.) MF: 100mm (4 in.) HF: 19mm (0.75 in.) Uni-Q
Recommended Amplifier Power 10 - 150W
Product External Dimension (H X W X D) 490 x 128 x 81 mm (19.29 x 5.04 x 3.19 in.)
Cut-Out Dimensions (H X W) 476 x 114mm (18.74 x 4.49 in.)
Wall Thickness (Maximum) 24mm (0.95 in.)
Wall Thickness (Minimum) 6mm (0.24 in.)
Mounting Depth From Surface 76mm (3.0 in.)
Optional Rough In Frame RIF4100L
Net Weight 3 kg (6.61 lbs)
Unit Measurement Piece
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.