KEF LSX Wireless Active Speakers

3 Reviews

Kef


KEF LSX Wireless Active Speakers

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Born from LS50 Wireless

Built upon the same platform as the critically acclaimed LS50 Wireless, LSX is true to KEF’s founding principles - to create exceptional experiences through excellence in engineering.

LSX retains the same philosophy as LS50 Wireless, utilising one amplifier for each driver - two amplifiers totalling 100w in each speaker . A streaming preamplifier and DSP section, combined with a new incarnation of KEF’s legendary Uni-Q driver array is nestled within a FEA designed cabinet with a curved front baffle, proudly displaying the unique heritage of the LS50 family.

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 A Uni-Q experience

At the heart of LSX’s audio prowess is the new 4” Uni-Q driver array. This is a signature KEF technology continuously developed since 1988. Through precise positioning of the drivers, all frequencies emanate from the same point in space. This is called a point source, working in a similar way to the human voice.

The effect is an amazing spread of sound - no tiny ‘HiFi sweet spot.’ Coupled with an extremely natural response, neither adding nor removing from the original recording, the soul of the music is fully realised by everybody in the room. Alongside refinements throughout, the main addition is the ribbing of the midrange driver. This strengthens the cone, reducing distortion, leaving behind a purer, more natural sound.

Setting the stage

Even the cabinet is packed with acoustic benefits:

  • The curved front baffle reduces the diffraction effect, meaning any extra sound scattering into the room is drastically reduced.
  • The FEA designed cabinet and bracing, alongside constrained layer damping (CLD) reduces resonance of the cabinet
  • An FEA designed flared bass port also reduces the ‘chuffing’ effect at higher volumes.
  • An almost invisible, yet ingenious heatsink design keeps the system cool, maximising electronic and driver performance.
  • All of this contributes by not contributing. Rather, it lets the Uni-Q driver be the sole performer, providing a clear, natural and accurate sound.

Perfecting sound

A passive speaker is an imperfect system full of compromise. When music is sent to different drivers, the process can cause phase issues, otherwise known as ‘time smearing.’ This makes music sound disorganised. KEF’s unique Music Integrity EngineTM, combined with the point source technology of Uni-Q, ensures that sound not only comes from a single point in space, but all at the correct time. The result is a tighter sound, with a beat that can be followed and a soundstage where you can almost point to where the sound is coming from.

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Optional Add Ons:

KEF B1 Wall Bracket for LSX

The B1 Wall Bracket is a quick and elegant method of attaching LSX to a wall. It features integral cable management, an integrated mounting system and adjustable dais capable of rotating LSX 90 degrees to either side or down. 

KEF S1 Floor Stand for LSX

The S1 Floor Stand takes it design cues from KEF’s Performance Speaker Stand. A cable management system hides any wires, while the integrated mounting system rigidly bonds LSX and the stand together, creating the perfect platform for the speaker to perform. 

KEF P1 Desk Pad for LSX

The P1 Desk Pad is ideal when using LSX as a desktop loudspeaker, either side of a television, on bookshelves or a cabinet. P1 is made with high-quality die-cast aluminium and has an upwards tilt so it can be angled slightly to your listening position.

 

 

 

Dimension (H x W x D) 240 x 155 x 180 mm (9.5 x 6.1 x 7.1in.) Weight 3.6kg (7.9lbs)
3.5kg (7.7lbs))
Wi-Fi Network Standard & 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 & Memory 10m
8 devices
Bluetooth Frequency 2.402GHz - 2.48GHz Bluetooth Power 2.5mW (Bluetooth Class 2 Device) Resolution

Output:
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 (SPL) 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

3 Reviews



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