LS50 Wireless II is more than a high-performance loudspeaker; it’s the perfect all-in-one speaker system, streaming from any source thanks to wireless compatibility with AirPlay 2, Chromecast and more, plus wired connections for your TV, games console and turntable. Great sound, no strings attached.

All the music, all the time

No matter how you stream your music, LS50 Wireless II has you covered. You can stream directly from the Spotify native app with Spotify Connect. With the KEF Connect app you can also stream Tidal, Amazon Music, Qobuz, and Deezer or tune in to internet radio and podcasts.

All your device

Out-of-the-box wireless compatibility with AirPlay 2, Google Chromecast and more, backed up with wired connections such as HDMI for your TV, turntable, CD player and games console. Whatever source you’ve got, LS50 Wireless II is ready for it.

Simple multiroom system

When using LS50 Wireless II with Airplay 2, Chromecast or Roon you can stream to multiple speakers around your home at the same time. By using multiple LS50 Wireless II speakers, you can have a simple, high-performance multiroom system.

Music Integrity Engine

All aspects of the LS50 Wireless II’s performance are aided by KEF’s bespoke Music Integrity Engine. This collection of bespoke Digital Signal Processing algorithms is optimised for the Uni-Q driver, enabling it to deliver a perfectly timed performance, for better imaging and a tighter sound.

Attention to every detail

Every aspect of LS50 Wireless II has been considered for acoustic benefits and from a design perspective. The low-diffraction, curved baffle is precision modelled around the Uni-Q driver, while eye-catching heat sinks and colour-matched ports are located on the well-equipped rear. The top-mounted control panel is designed to be stylish and functional.

Streaming Services

Specifications:

Built-in Amplifier Power (per system): 760W
Max SPL: 108dB
Max Source Resolution: 384kHz/24bit, MQA, DSD256
Interspeaker Connection: Proprietary Wireless or Cat 6 Cable
Drive Unit: 12th Generation with Uni-Q with MAT
Driver rearward Sound Absorption: 99% by MAT
Mid-band Total Harmonic Distortion (THD) at 90dB/1m: THD 0.07% Extremely low distortion by driver motor redesign
Optimal Room Size: 10-100 m2

The KEF Ci5160RL-THX is crafted with a massive aluminum baffle to eliminate vibration and is the perfect platform for the 160mm aluminum cone Uni-Q with tangerine waveguide, and four 160mm woofers. Capable of bi-wire and bi-amplifier connections the Ci5160RL-THX delivers on the performance promise of all KEF R Series speakers.

Overview

The ultimate in custom installed Extreme Home Theatre, the formidable new Ci R Series has the jaw-dropping acoustic capabilities of the classic KEF floor stander it’s named after, with all the drama and emotional intensity of full theatre sound quality. The Ci R Series consists of an in-ceiling speaker that can be combined with one of two in-wall models, and a sensational new powered subwoofer. As you might expect, its towering performance sets a new standard for custom installed speakers.

The Ci5160RL-THX is crafted with a massive aluminum baffle to eliminate vibration and is the perfect platform for the 160mm aluminum cone Uni-Q with tangerine waveguide, and four 160mm woofers. Capable of bi-wire and bi-amplifier connections the Ci5160RL-THX delivers on the performance promise of all KEF R Series speakers.Ci5160RL-THX is an in-wall speaker certified to THX ULTRA2 standards. 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.

Technical Specifications:

NOMINAL IMPEDANCE: 4 Ohms
SENSITIVITY: 90dB (2.83V/ 1m)
FREQUENCY RESPONSE:40Hz – 28kHz (±6dB) open backed
CROSSOVER FREQUENCIES: 300Hz, 2.4kHz
DRIVE UNITS
LF: 4 x 160mm (6.5 in.)
MF: 160mm (6.5 in.)
HF: 25mm (1 in.) Uni-Q
RECOMMENDED AMPLIFIER POWER: 40 – 250W
PRODUCT EXTERNAL DIMENSION (H X W X D)
1070 x 230 x 105.7 mm (42.13 x 9.06 x 4.16 in.)
With Grille : 1073 x 242 x 112.4 mm (42.24 x 9.53 x 4.43 in.)
CUT-OUT DIMENSIONS (H X W): 1052 x 209mm (41.42 x 8.23 in.)
MOUNTING THICKNESS
Ceiling Thickness (Maximum): 40mm (1.58 in.)
Ceiling Thickness (Minimum): 6mm (0.24 in.)
MOUNTING DEPTH FROM SURFACE: 99mm (3.9 in.)

The ultimate in Extreme Home Theatre, certified to THX ULTRA2 and THX SELECT2 standards, the formidable KEF Ci R Series Ci3160RLb-THX in-wall subwoofer has the deep bass and theatre thumping output capabilities of a traditional KEF subwoofer coupled with the ability to deliver all the drama and emotional intensity of full theatre sound quality.

Overview

The ultimate in Extreme Home Theatre, certified to THX ULTRA2 and THX SELECT2 standards, the formidable new Ci R Series Ci3160RLb-THX in-wall subwoofer has the deep bass and theatre thumping output capabilities of a traditional KEF subwoofer coupled with the ability to deliver all the drama and emotional intensity of full theatre sound quality.

With three high-output 160mm sub-bass drivers mounted to a massive aluminum baffle the Ci3160RLb-THX must be matched with KEF’s powerful KASA500 system amplifier. Each KASA500 can power up to two of the Ci3160RLb-THX subwoofers for even the most demanding theatre installations.

For theatre building flexibility, the remainder of KEF’s Extreme Theatre suite consists of two THX Ultra2 certified in-wall LCR speakers, a THX Ultra2 certified in-ceiling LCR speaker, as well as a smaller in-wall subwoofer and smaller in-wall LCR.

Technical Specifications:

NOMINAL IMPEDANCE: 4 Ohms
SENSITIVITY: 92dB (2.83V/ 1m)
FREQUENCY RESPONSE: 20Hz – 140Hz (±6dB) open backed
DRIVE UNITS: LF: 3 x 160mm (6.5 in.)
AMPLIFIER REQUIREMENTS: KASA500
PRODUCT EXTERNAL DIMENSION (H X W X D)
680 x 230 x 96 mm (26.77 x 9.06 x 3.78 in.)
With Grille : 683 x 242 x 102.7 mm (26.89 x 9.53 x 4.04 in.)
CUT-OUT DIMENSIONS (H X W): 660 x 209mm (25.98 x 8.23 in.)
MOUNTING THICKNESS
Ceiling Thickness (Maximum) : 40mm (1.58in.)
Ceiling Thickness (Minimum) : 6mm (0.24in.)
MOUNTING DEPTH FROM SURFACE: 88.5mm (3.84 in.)
NET WEIGHT: 10.9 kg (24.1 lbs)
UNIT MEASUREMENT: Piece

The KEF Ci3160RL-THX is crafted with a massive aluminum baffle to eliminate vibration and is the perfect platform for the 160mm aluminum cone Uni-Q with tangerine waveguide, and two 160mm woofers. Capable of bi-wire and bi-amplifier connections the Ci3160RL-THX delivers on the performance promise of all KEF R Series speakers.

Overview

The ultimate in custom installed Extreme Home Theatre, the formidable new Ci R Series has the jaw-dropping acoustic capabilities of the classic KEF floor stander it’s named after, with all the drama and emotional intensity of full theatre sound quality. The Ci R Series consists of an in-ceiling speaker that can be combined with one of two in-wall models, and a sensational new powered subwoofer. As you might expect, its towering performance sets a new standard for custom installed speakers.

The Ci3160RL-THX is crafted with a massive aluminum baffle to eliminate vibration and is the perfect platform for the 160mm aluminum cone Uni-Q with tangerine waveguide, and two 160mm woofers. Capable of bi-wire and bi-amplifier connections the Ci3160RL-THX delivers on the performance promise of all KEF R Series speakers.

Technical Specifications:

NOMINAL IMPEDANCE: 4 Ohms
SENSITIVITY: 90dB (2.83V/ 1m)
FREQUENCY RESPONSE: 45Hz – 28kHz (±6dB) open backed
CROSSOVER FREQUENCIES: 340Hz, 2.5kHz
DRIVE UNITS:
LF: 2 x 160mm (6.5 in.)
MF: 160mm (6.5 in.)
HF: 25mm (1 in.) Uni-Q
RECOMMENDED AMPLIFIER POWER: 30 – 180W
PRODUCT EXTERNAL DIMENSION (H X W X D): 680 x 230 x 105.7 mm (26.77 x 9.06 x 4.16 in.)
CUT-OUT DIMENSIONS (H X W): 660 x 209mm (25.98 x 8.23 in.)
MOUNTING THICKNESS
Ceiling Thickness (Maximum) : 40mm (1.58in.)
Ceiling Thickness (Minimum) : 6mm (0.24in.)
MOUNTING DEPTH FROM SURFACE: 99mm (3.9 in.)

KEF Ci4100QL-THX is an in-wall speaker certified to THX SELECT2 standard which delivers the 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 channel speaker system.

Overview

A KEF’s sophisticated ’sit anywhere’ Uni-Q driver array, which places the tweeter in the acoustic center of the bass/midrange cone, It allows both the tweeter and woofer to act as a single point source that disperses the sound widely and eventually throughout the room. It 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.

The KEF Ci4100QL-THX is a built-in wall speaker that has been certified in accordance with the THX SELECT2 standard. In turn, the focus of every THX-certified 2.1, 5.1 and 7.1 speaker system is a deeper understanding of the process of filmmaking and surround sound. The THX quality seal was developed with the unique design properties of professional film studio speakers and thus creates the sonic balance of the filmmaker’s final mix in your own living room. And the result? In action scenes you are practically carried away, while conversational moments come across as completely natural and captivating.
Technical Specifications:

IMPEDANCE: 4 ohms
SENSITIVITY: 89dB (2.83V / 1m)
TRANSITION FREQUENCY: 2.2kHz
FREQUENCY RESPONSE: 55Hz – 28kHz (± 6dB) open backed
CHASSIS:
LF: 3 x 100mm (4 in.)
MF: 100mm (4 in.)
HF: 19mm (0.75 in.) Uni-Q
AMPLIFIER REQUIREMENTS: 10 – 150W
EXTERNAL PRODUCT DIMENSIONS: 490 x 128 x 81 mm (19.29 x 5.04 x 3.19 in.)
CUT-OUT DIMENSIONS: 476 x 114mm (18.74 x 4.49 in.)
WALL THICKNESS
Maximum wall thickness: 24 mm (0.95 in.)
Minimum wall thickness: 6 mm (0.24 in.)
MOUNTING DEPTH FROM SURFACE: 76mm (3.0 in.)

Overview

Great loudspeakers disappear, leaving just the music. LS50 Meta is such a loudspeaker. The incredibly immersive sound means you lose yourself in your favorite music. Savoring every nuance as layer upon layer of instrumentation is delivered with exceptional acoustic accuracy anywhere in the room.

Metamaterial Absorption Technology
A truly revolutionary tool in the KEF acoustic armoury, Metamaterial Absorption Technology (MAT) is a highly complex maze-like structure that absorbs 99% of the unwanted sound from the rear of the driver, eliminating the resulting distortion and providing purer, more natural sound.

Every spot is the sweet spot
12th generation Uni-Q with MAT
Using advanced simulation and analysis tools, our engineers have developed the 12th generation Uni-Q with MAT. This new driver array delivers reduced colouration, less distortion and a sound that is more transparent and life-like than previously possible, all dispersed evenly throughout the room.

Technical Specifications:

MODEL: LS50 Meta
DESIGN: Two-way bass reflex
DRIVE UNITS:-
Uni-Q Driver Array:
HF: 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption Technology, MF/LF: 130 mm (5.25 in.) aluminium cone
CROSSOVER FREQUENCY: 2,1 kHz
FREQUENCY RANGE (-6DB): 47 Hz – 45 kHz
TYPICAL IN-ROOM BASS RESPONSE (-6DB): 26 Hz
FREQUENCY RESPONSE (±3DB): 79 Hz – 28 kHz
HARMONIC DISTORTION (90DB, 1M): <0,4% 175 Hz – 20 kHz,<0,1% 300 Hz – 10 kHz
MAXIMUM OUTPUT: 106 dB
AMPLIFIER POWER (RECOMMENDED): 40-100 W
NOMINAL IMPEDANCE: 8 Ω (min. 3,5 Ω)
SENSITIVITY (2.83V/1M): 85 dB
WEIGHT: 7.8 kg (17.2 lbs.)
DIMENSION (H X W X D) WITH TERMINAL: 302 x 200 x 280.5 mm (11.9 x 7.9 x 11.0 in.)

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At the heart of the evolved Q Series is the Uni-Q driver array. KEF’s signature innovation places the tweeter in the acoustic centre of the midrange cone, bringing the acoustic ideal of a single point source closer than ever to realisation. The result is a more detailed, more accurate three-dimensional sound image, which is dispersed more evenly throughout the room than is possible with a conventional speaker. Uni-Q’s ultra-wide dispersion is further enhanced by KEF’s ‘tangerine’ waveguide over the tweeter dome.

Uni-Q sound taken to the next level

With the addition of the damped tweeter loading tube providing a gentle termination of sound produced from the back of the tweeter, lower treble performance is improved dramatically and a new low-distortion inductor on the crossover provides cleaner bass.
To optimize the resolution and purity of the Q Series bookshelf speakers, the Uni-Q driver has been repositioned to the centre of the cabinet to reduce unwanted internal resonance and adds refinement to their sonic clarity and detail.

CFD Designed Port

Featuring a Computational Fluid Dynamics (CFD) port design with the port repositioned to the rear of the speaker, clarity is improved by reducing the audibility of the midrange leakage through the port. The geometry of the ports has been tuned to minimize turbulence at higher levels resulting in a reduction in port noise and less LF compression.

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