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By KEF

LSX II

Wireless speakers

$2,300.00

Finish — Blue

Model

In-store demo

Available

Stock availability

Available

  • Uni-Q driver array

    115 mm mid/bass cone with a central 19 mm tweeter.

  • 100 W per speaker

    Separate 70 W and 30 W Class D amplifiers.

  • Bluetooth listening

    Direct wireless playback alongside network streaming.

  • HDMI ARC and USB-C

    Connect a television, computer or additional wired source.

Product details

KEF LSX II is a compact active stereo system with amplification and streaming built into a pair of speakers. Each enclosure combines a 115 mm magnesium/aluminium Uni-Q mid/bass driver with a centrally mounted 19 mm aluminium dome tweeter, helping the two drivers share a common acoustic centre.

Integrated amplification and streaming

Each speaker has separate Class D amplifiers delivering 70 watts to the mid/bass driver and 30 watts to the tweeter. AirPlay 2, Google Cast, Roon Ready and UPnP support network listening, while Bluetooth provides a direct wireless connection. Wi-Fi and Ethernet offer alternative ways to join the home network.

Connections for everyday sources

HDMI ARC connects a compatible television, USB-C accepts computer audio, and optical and 3.5 mm analogue inputs accommodate additional sources. A subwoofer output on the primary speaker allows bass extension. The speakers can communicate wirelessly at 24-bit/48 kHz or use their interspeaker cable for 24-bit/96 kHz operation; incoming audio is resampled to the selected system rate.

Specifications

Design
Active stereo speaker pair
Uni-Q drivers (each)
19 mm aluminium dome tweeter; 115 mm magnesium/aluminium mid/bass cone
Amplification (each)
70 W LF + 30 W HF; Class D
Frequency response (±3 dB)
54 Hz–28 kHz at 85 dB/1 m; EQ dependent
Frequency range (−6 dB)
49 Hz–47 kHz at 85 dB/1 m; EQ dependent
Maximum output
102 dB at 1 m
Network streaming
AirPlay 2; Google Cast; Roon Ready; UPnP
Wireless connection
Bluetooth; dual-band Wi-Fi 802.11a/b/g/n/ac
Inputs
HDMI ARC; optical; USB-C; 3.5 mm analogue; Ethernet
Subwoofer output
RCA, on primary speaker
Interspeaker audio
Wireless 24-bit/48 kHz; wired 24-bit/96 kHz
Power supply
100–240 V AC, 50/60 Hz

Dimensions

Dimensions (each, W × H × D)
155 × 240 × 180 mm