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KEF LSX Wireless Speakers (Pair)


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Ex VAT: £832.50

An award winning smaller alternative to LS50 Wireless in a choice of five stunning colours.

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Warranty length 5 Years
Brand KEF Speakers
Product Award What HiFi Award 5 Stars

Tech Specs

- Amplifier Output Power: LF: 70W, HF: 30W
- HF Drivers: 19mm (0.75in.) aluminium dome
- LF/MF Drivers: 115mm (4.5in.) magnesium/aluminium alloy cone
- Wi-Fi: Dual-band 2.4GHz/5GHz to IEEE 802.11a/b/g/n
- Master/Slave connection: propriety wireless 2.4GHz or RJ45 Ethernet
- Maximum output: 102dB SPL
- Bluetooth: 10 metre range, 8 device memory
- Bluetooth Frequency: 2.402GHz - 2.48GHz
- Bluetooth Power: 2.5mW (Bluetooth Class 2 Device)
- Frequency Range (-6dB)
...Measured at 85dB/1m
...49Hz - 47kHz (More bass extension)
...52Hz - 47kHz (Standard)
...55Hz - 47kHz (Less bass extension)
...Depending on speaker settings
- Frequency Response (±3dB)
...Measured at 85dB/1m
...54Hz - 28kHz (More bass extension)
...59Hz - 28kHz (Standard)
...69Hz - 28kHz (Less bass extension)
...Depending on speaker settings
- Third Party Support
...Mounting inserts for wall mounting
...Supports 3rd party remote programme
...Supports IP Control
- Power Input: 100 – 240VAC 50/60Hz
- Dimensions: 240H x 155W x 180D mm (9.5H x 6.1W x 7.1D in.)
- Weight: Master 3.6kg (7.9lbs) Slave 3.5kg (7.7lbs)

- 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)

- Apple AirPlay 2
- Spotify Connect (November 2018)
- DLNA Compliant
- Roon tested
- High Res Support: Upto 192kHz/24bit
- Dedicated apps for iOS and Android

- 2.4GHz/5GHz Dual-band Wi-Fi network
- Bluetooth 4.2 with Qualcomm aptX™
- USB Type B
- TOSLINK Optical
- 3.5mm Aux Input
- RCA Analog Line Level Input
- 10/100 Mbps RJ45 Ethernet (For network and service)

- Subwoofer output
- 5V2A DC Output

Product Description

KEF LSX wireless active speakers are a smaller alternative to the award winning LS50 Wireless, being approximately half the size, half the price, and available in a choice of 5 stunning colours. 

Style and substance

For the LSX, Kef have created a contemporary speaker for the contemporary listener, featuring a range of connectivity options for the modern listening environment, and a choice of colours and materials, so the LSX will surely fit into any contemporary home. Based on the award-winning LS50 wireless speakers, the LSX is approximately half the size of its bigger brother but as we've come to expect from KEF with excellent sound quality. Indeed, only within hours of their announcement, the LSX had received an award and excellent review.

Wide connectivity

Unlike other active speakers, LSX doesnt need cables between the speakers thanks for KEF's proprietary wireless connecting system. As active speakers without the need for separate amplifiers or cables, you can enjoy hi-fi quality sound in a wire-free listening space. 

Much like the LS50 Wireless, the LSX includes streaming for Bluetooth enabled devices, or use your wi-fi network to stream via Tidal, Spotify Connect, a NAS drive or computer using DLNA and very soon Apples Airplay 2. Additionally, you can stream over LAN (RJ45) connection, use the Optical Toslink Connector (96kHz/24bit) to connect to a TV, or to keep it simple with the 3.5mm aux input for other non-digital sources. 

KEF's App

Controlling the LSX wirelessly is very simple by using Kef's Control App, which allows you to control the music, but also to keep the firmware current, and your speakers up to date with the latest steaming technology.

Construction & Drivers

LSX features KEF's iconic Uni-Q driver array, which not only looks fantastic in these designs but significantly improves stereo imagery and presence. By placing the tweeter in the centre of the mid-range and bass cone, the stereo imagery improves, while giving the listener a greater sense of presence across a wider area. 

The drivers within the Uni-Q is a high frequency 19mm (0.75") aluminium dome set within a 115mm (4.5") low-frequency midrange driver constructed from magnesium aluminium alloy capable of representing frequency components down to 50Hz. The LSX is powered by efficient amplifiers that dont need large heatsinks and produces a substantial 200w of power, from two 30 watt and two 70 watt internal amplifiers.

How can they sound so good?

Kef are renowned for their R&D, and by using the Finite Element Method, they have designed a baffle that ensures the sound pressure variations are dispersed out from the cabinet rather than reflecting within, which adversely affects the overall sound quality. For the Digital Signal-Processing algorithm, Kef have developed their own proprietary processor the Music Integrity Engine, which controls the accuracy and efficacy of temporal alignment and phase coherence. The result is a speaker compact enough to fit on a bookshelf or the side of a television, whilst being capable of representing frequency components to their fullest, giving the listener a deep solid bass output and temporal accurate high frequencies.

Colour choices

Kef have a history of collaborating with world class designers for their speakers, previously with KEF Muon and more recently on LS50 Wireless with Marcel Wonders for the Nocturne edition. With this new model KEF have continued the tradition, by collaborating with leading British designer Michael Young to create a highly contemporary speaker, with a gold cone, red tweeter, and the cabinet covered in Michael’s signature olive green fabric. 

The LSX has a range of colour and finish options, for the fabric covered variants, you can have a blue cone, with silver tweeter covered in blue fabric, a red cone with a silver tweeter, covered in a subtle red fabric, or the sophisticated black, with silver tweeter wrapped in a refined black fabric. For those who prefer a clean gloss finish, you also have the option of white gloss with silver cones.

Press Reviews

  • What Hi-Fi Awards 2019 "Best all-in-one system" (What Hi-Fi magazine)

    'A neat, compact and entertaining all-in-one system of rare sonic quality. For: class-leading insight, extensive connectivity, neat, colourful design' (What Hi-Fi review)

  • 'Take heed, rival systems, these miniature marvels are going to take some beating' (What Hi-Fi review)

  • 'Despite the smaller mid/bass driver (10cm as opposed to 13cm) and cabinet volume, it shares its sibling’s relative talent for bass performance...the LSX’s low frequency delivery is consistently taut, agile and lucid' (What Hi-Fi review)

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