Short summary

The convenience and connectivity of wireless. The emotion and detail of true high-resolution stereo. And all from a compact system designed to fit almost anywhere. LSX is the speaker system for the way we listen today.

Specifications

Speaker characteristics
Frequency range 54Hz - 28kHz
Recommended Amplifier Power LF: 70W HF: 30W

Description

Play anything. Hear everything.
From streaming to gaming, from TV to multi-room music, LSX is designed for all your home entertainment needs. Play what you like, how you like, where you like – and experience it all in glorious high-resolution stereo.

Stereo.Feel the performance.
With two speakers positioned apart from each other, you’ll experience music as a 3D soundstage, with the pin-point imaging and sense of presence that one-box systems miss. It’s the difference between just hearing music, and really feeling it.

Apple AirPlay 2*
LSX comes with Apple AirPlay 2 which, from a simple screen tap or request to Siri, unlocks the world of multi-room audio. You can wirelessly stream all your favourite music apps to your whole home with seamless control from your iPhone, iPad, and Mac.(*available in early 2019)

All the music on earth.
With Spotify Connect and Tidal built in, all the music you love is at your fingertips. Stream from the cloud, or directly from a NAS drive or a computer through DLNA fully wirelessly at 48kHz/24bit resolution (or 96kHz/24bit using optional wired connection). Or simply use Bluetooth.

Easy listening.
With LSX, nothing gets between you and the music. Connecting to Wi-Fi takes moments with the KEF Control app and keeps abreast of the latest firmware, so your speakers are future-proofed and always up to date.

Sound
LSX utilises KEF’s advanced acoustic design technology, features that are usually reserved for much larger hi-fi speakers. Get ready for goosebump-inducing levels of sonic realism and accuracy.

Uni-Q.The sweet spot just got a lot wider.
LSX comes with KEF’s breakthrough Uni-Q driver array. By placing the tweeter at the centre of the midrange and bass cone, it radically improves stereo imaging. This not only makes music sound clear, detailed and lifelike, it does so across a wider listening area.

DSP. Small speakers,big sound.
LSX uses KEF’s Music Integrity Engine™ – bespoke Digital Signal Processing that helps the speakers deliver transparent bass with great extension, while reducing distortion. So you can fill your room with rich, full-bodied sound.

Design
Compact, elegant and incredibly versatile, LSX looks great and fits comfortably into any setting. And with our intuitive apps, you’ll be up and running in next to no time.

No cables. No compromise.
With no need for a cable to connect the two speakers, and no separate amps or other equipment to worry about, you can position them wherever you like. Wave goodbye to visual clutter, without sacrificing sound quality.

Design by Michael Young.
Overseen by renowned product designer Michael Young, LSX’s design achieves a fine balance of form and function. Carefully considered details include port accent colours and a colour changing LED to subtly indicate which source is selected.

Colours and fabrics.
Whatever your style, there’s an LSX to match. The system comes with a choice of five colours, and is clad in an industrial fabric by Danish contemporary textile designer, Kvadrat. These fine details make the LSX pleasing to the touch, as well as appealing to the eye.

AUDIO FEATURES
Two-way 2.0 audiophile active digital speaker with 4″ Uni-Q driver.
Acoustically optimised cabinet with constrained layer damping.
KEF’s unique Music Integrity Engine™ time and phase correcting DSP algorithm
Four amplifier active system (2 x 30W 2 x 70W Class D)
Customisable EQ settings (via KEF Control app)

CONNECTIVITY FEATURES
Apple AirPlay 2 (Early 2019)
Spotify Connect (November 2018)
TIDAL
Bluetooth® 4.2 with Qualcomm aptX™
Digital input (TOSLINK)
3.5mm auxiliary input
DLNA Compliant
Roon tested
Subwoofer output
Dedicated apps for iOS and Android

KEF LSX Specifications
Drive Units Uni-Q driver array:
HF: 19mm (0.75in.) aluminium dome
LF/MF: 115mm (4.5in.) magnesium/aluminium alloy cone
Frequency Range (-6dB) Measured at 85dB/1m
49Hz – 47kHz – Depending on speaker settings
Frequency Response (±3dB) Measured at 85dB/1m
54Hz – 28kHz
Depending on speaker settings
Power Input 100 – 240VAC 50/60Hz
Amplifier Output Power LF: 70W
HF: 30W
Max SPL 102dB
Dimension (H x W x D) 240 x 155 x 180mm (9.5 x 6.1 x 7.1in.)
Input Resolution Support up to 192kHz/24bit – Depending on source resolution
Master and Slave Speaker connection Wireless: Propriety connection 2.4GHz (transmit 48kHz/24bit)
Wired: RJ45 Ethernet (transmit 96kHz/24bit)
Depending on connection settings

Master Speaker
Inputs 2.4GHz/5GHz Dual-band Wi-Fi network
Bluetooth 4.2 with aptX codec
TOSLINK Optical
3.5mm Auxiliary Input
RJ45 Ethernet (For network)
Output Subwoofer output
5V2A DC Output
Wi-Fi Network Standard IEEE 802.11a/b/g/n
Wi-Fi Network Frequency Band Dual-band 2.4GHz/ 5 GHz
Bluetooth Range 10m
Bluetooth Memory 8 Devices
Weight 3.6kg (7.9 lbs)

Slave Speaker
Weight 3.5kg (7.7 lbs

 

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KEF is one of Britain’s best-known loudspeaker brands, recognised for its long-running focus on acoustic engineering, clean industrial design and practical hi-fi innovation. The company is especially associated with its Uni-Q driver…