Need help or advice? Call us on 01732 807 579
1 / 3 - Click to view full screen  |  Ci4100QL-THX
In stock

KEF Ci4100QL-THX in-wall speaker

KEF logo

The KEF Ci4100QL-THX is an in-wall speaker certified to THX SELECT2 standard.
The Ci4100QL features 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.

THX certified in-wall speakers deliver the appropriate frequency response and high output and imaging quality of a traditional box speaker. This provides the best of both worlds - THX surround sound performance from components that blend harmoniously with any room decor. 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. Engineered with design characteristics of professional studio speakers, THX recreates the tonal balance of the filmmaker's final mix in your living room. The results? Action sequences are impactful, and dialogue-driven moments are natural and engaging.
Streaming audio services

Use the Ci400QL-THX for...

Multi room audio
Use with multi room audio systems such as Sonos and Control 4

Home cinema

Perfect for front LCR channels in home cinema applications

Best suited to medium and larger size rooms
Technical specification

Ci400QL-THX technical specification

Sensitivity - 89dB 1W/1m
Power recommendations - 10 - 150 Watts
Impedance - 4 Ohms
Frequency range - 55Hz - 28kHz
Crossover frequency - 2.2kHZ
Height x width x depth - 490mm x 128mm x 81mm
Cut-out - 476mm x 114mm


3 x 100mm woofers
1 x Mid range driver
19mm aluminum Uni-Q tweeter
5 year warranty

Ci400QL-THX features

5 year warranty
Ultra thin bezel (UTB)
Patented 100mm Uni-Q driver
19mm aluminum dome tweeter
3 x 100mm extended bass response drivers

Call us on 01732 807 579 to book your free smart home consultation

With single room solutions starting from just £755, there has never been a better time to experience smart home living with Control4.