KEF LSX Wireless Speakers (Gloss White)
KEF LSX Wireless Speakers (Gloss White)
KEF LSX Wireless Speakers (Gloss White)
KEF LSX Wireless Speakers (Gloss White)
KEF LSX Wireless Speakers (Gloss White)

KEF LSX Wireless Speakers (Gloss White)


Regular price £999.00
Prices include VAT. Shipping free for orders over £25.

Compact, elegant and incredibly versatile, the KEF LSX Wireless Speakers in gloss white have been designed with all of your home entertainment needs in mind. From streaming to gaming, from TV to multi-room music, you can experience it all in glorious high-resolution stereo. They feature KEF's advanced acoustic design technology which includes their 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.

Connecting to Wi-Fi takes moments with the KEF Control app which also keeps abreast of the latest firmware, so your speakers are future-proofed and always up to date and with Apple AirPlay 2, Spotify Connect and Tidal built in, all the music you love is at your fingertips.

The LSX's design cleverly combines form with function with stylish detailing which includes port accent colours and a colour changing LED to subtly indicate which source is selected. The speakers are clad in an industrial fabric by Danish contemporary textile designer, Kvadrat, making the LSX pleasing to the touch, as well as appealing to the eye.


  • Two-way 2.0 audiophile active digital speaker with 4.5" 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 (Early 2019)
  • Spotify Connect (November 2018)
  • 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

 Technical Specifications:

  • Wi-Fi network standard and frequency band:

    Dual-band 2.4GHz/5GHz
    IEEE 802.11a/b/g/n

  • Driver units: 

    Uni-Q driver array:
    HF: 19mm (0.75in.) aluminium dome
    LF/MF: 115mm (4.5in.) magnesium/aluminium alloy cone

  • 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
  • Amplifier output power: LF: 70W  HF: 30W
  • Bluetooth range and memory: 10 metres / 8 devices
  • Bluetooth frequency: 2.402GHz - 2.48GHz
  • Bluetooth power: 2.5mW (Bluetooth Class 2 Device)
  • Resolution: 

    Supports up to 192kHz/24bit

    Wireless mode: 48kHz/24bit
    Cable mode: 96kHz/24bit

  • Primary and secondary speaker connection: Wireless: Propriety 2.4GHz
    Wired: RJ45 Ethernet
    Depending on connection settings
  • Maximum output: 102dB
  • Power input: 100 – 240VAC 50/60Hz
  • Wireless connectivity: TIDAL
  • Frequency range: 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: 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 supporting wall mount
    Supports 3rd party remote programme
    Supports IP Control
  • Finish: Gloss White Product code: SP3994AB

Weights and Measurements:
  • Weight: (each speaker) 3.6kg
  • Dimensions: (each speaker with terminal) 24cm H x 15.5cm W x 18cm D

KEF Warranty Information: 


All KEF Products are precision engineered and the Authorised Distributors provide warranty against faulty material and/or workmanship for the following products from the date of original purchase is as follows:

  • Passive loudspeakers: 5 years
  • Active loudspeakers, Powered subwoofers and Motorised speakers: 2 years
  • Wireless speakers, Accessories and Headphones: 2 years
  • Kube8b / Kube10b / Kube12b: 2 years (Driver: 5 years)


This warranty is only valid in the country of purchase and only applies to the first purchaser of the KEF product(s) from an Authorised Dealer. This warranty does not extend to any other person or transferee, and terminates if you sell or otherwise transfer the KEF product(s) to another party/entity.

This warranty does not cover any of the following:-

    1. normal or fair wear and tear and/or any wear from environmental deterioration of the KEF product and/or its components
    2. mechanical damage or derangement of the KEF product in transit that is not attributable to the fault of the KEF and its Authorised Distributor
    3. deterioration of any consumable components of the KEF product which would become worn or depleted through use (e.g. batteries)
    4. any KEF product whose serial number label(s) is/are missing, made illegible, defaced, altered, removed, or damaged
    5. any KEF product and/or any of its components that is not purchased from an Authorised Dealer/Distributor, including any parallel imports or grey market products
    6. incorrect or unauthorised components which have been substituted and/or used for the KEF Product;
    7. any KEF Product and/or any of its components which have been installed, disassembled, repaired, converted, modified, tampered with or otherwise interfered with in any way by any person/entity other than an authorised representative of the KEF and its Authorised Distributors
    8. any defects, malfunction, loss and/or damages caused by or resulting from any of the following:-
    • any of the circumstances set out in (1) - (7) above
    • any accident or negligence not caused by the fault of KEF and its Authorised Distributors
    • any improper installation or connection of the KEF product (including without limitation any improper connection of the KEF product to improper voltage or power source) not caused by the fault of any of the KEF and its Authorised Distributors
    • any improper care, dropping, mishandling, misuse, abuse or unreasonable or improper use, operation or maintenance of the KEF Product
    • any operation of the KEF product with any faulty, unsuitable or inappropriate apparatus and/or ancillary equipment
    • any use of the KEF Product under abnormal or inappropriate voltage or power surges;
    • failure to use, operate or maintain the KEF product in accordance with the instructions set out in the users' manual
    • exposure of the KEF product to extreme temperature, heat, water or other liquids, insects, excessive moisture, sand, chemicals, battery leakage or any other contaminants
    • any force majeure events, including but not limited to any acts of God, fire, lightning, typhoon, storm, earthquake, hurricane, natural disaster, tsunami, flood, war, riot, public disturbance
    • any other causes beyond the reasonable control of either KEF and its Authorised Distributor.


    Warranty may vary according to the local legal requirements of the country concerned. Contact your local authorised KEF distributor ("Authorised Distributor/s") for details of specific warranty terms and relevant service procedures. For the list of authorised KEF distributors worldwide, please visit KEF.COM.

    This warranty is in addition to, and in no way detracts from, your statutory rights as a consumer under any applicable laws governing this warranty.

    If any provision of this warranty is unlawful, void or unenforceable under the applicable laws governing this warranty, that provision shall be deemed severable and shall not affect the validity of any of the remaining provisions.


    Purchase KEF products (including passive loudspeakers, active loudspeakers, powered subwoofers, motorised speakers, electronics and headphones ["KEF products"]) only from dealers ("Authorised Dealer/s") and distributors authorised by KEF in their respective jurisdiction to sell genuine KEF products. Do not entrust repair work to unauthorised persons. The components necessary to maintain the original performance of the KEF products are available only through Authorised Distributors. Warranty is provided only to KEF products purchased from an Authorised Dealer and accompanied by proof of purchase. No warranty is provided to any product and/or any components not purchased from an Authorised Dealer/Distributor. Keep and produce receipt or proof of purchase in the event that service of your product is required. Information such as the date of the original purchase, the name and model number of the product, and the details of the Authorised Dealer must be clearly stated on the relevant receipt or proof of purchase.

    The terms and conditions of this warranty may be revised from time to time by KEF and you agree to be bound by the latest terms. Any updates to this warranty will be posted on the official website for KEF products,


    Other than the warranty and services set out in this warranty, to the fullest extent permitted by law, KEF and its Authorised Distributors shall not be liable to you and/or any third party or entity whatsoever for:-
    • any loss, damages and/or malfunction caused to any product(s) which is/are connected to any of the KEF products
    • any damages, loss and liability (except for any personal injuries or death), whether direct, indirect, incidental, consequential special, punitive or otherwise, howsoever caused by, arising out of, or otherwise in relation to the installation, delivery, use, service, repair, replacement and/or maintenance of the KEF product; or
    • any damages, loss and liability (except for any personal injuries or death) under this warranty in respect of any act, omission, or negligence of any of their technicians, employees, agents, representatives or independent contractors relating to the actual or purported performance of any of the obligations under this warranty.

    Without limiting the above, the maximum liability of the KEF and its Authorised Distributors under this warranty shall not in any event or under any circumstances exceed the actual purchase price paid for the KEF product(s).



      Delivery / Returns

      Always Available

      Everything you see on the Burton Blake website is available and ready to be dispatched to you. If for any reason an item is not available it will be removed from the site until it is back in stock.

      Free UK Delivery

      If you spend £25 or more with Burton Blake UK express delivery is free of charge.

      If you spend less than £25 we will charge you £3.95.

      Delivery to Europe is £29.95 and the rest of the World is £39.95.

      Delivery Times

      We aim to process all orders on the day they are received. We only use express delivery services so your order should be with you within a few days. You will receive an email to notify you when your order has been dispatched.

      Easy Returns

      Our standard policy allows purchases to be returned to Burton Blake up to 30 days after order date. The item must be brand new, unused and in its original packaging to qualify for a full refund. Should the product packaging include a tamper seal, this must also be intact. Please email to request a returns authorisation.