This product has been discontinued and is no longer available to purchase.
Looking for something similar? Browse our full range from KEF, or contact us for a recommendation.
What Hi-Fi? Awards 2023: Best speaker system £750-£1500
"A great value speaker system that's perfect for smaller rooms." What Hi-Fi?, October 2023
What Hi-Fi? Awards 2022: Best all-in-one system £1000-£1500
"KEF's taken what was already a winning formula, introduced some key upgrades that improve functionality and usability, and without really altering the speaker hardware has produced a talented set-up that sings with any genre of music sent its way." What Hi-Fi? ★★★★★, October 2022
The KEF LSX II is a compact, self-contained wireless speaker system that delivers high-resolution audio without the need for a separate amplifier or streamer. It sits between the more affordable LSX II LT and the larger LS50 Wireless II in KEF's wireless range, and shares the W2 wireless platform of the LS50 Wireless II in a smaller cabinet suited to desks, shelves and smaller listening rooms. Available in four finishes; this one is Cotton White, the fabric-wrapped finish that replaced the original Mineral White.
Cotton White was introduced to replace the painted Mineral White version, giving the whole LSX II line a consistent fabric-first finish. The cabinet, designed by industrial designer Michael Young, is clad in a neutral off-white fabric, so the speakers sit quietly in both modern and classic interiors.
Each speaker uses a version of KEF's 11th generation Uni-Q driver array designed specifically for the LSX II, placing a 19mm aluminium dome tweeter at the acoustic centre of a 115mm magnesium/aluminium alloy bass/midrange cone. This point-source arrangement eliminates the traditional narrow sweet spot and delivers an even, precisely imaged soundstage across the room. Both drivers are powered by their own dedicated Class D amplifier, 70W for the bass/midrange and 30W for the tweeter in each speaker, for a combined 200W of system power and a maximum output of 102dB. KEF's Music Integrity Engine, a suite of digital signal processing algorithms optimised for the Uni-Q driver, handles timing and tonal balance.
The LSX II supports AirPlay 2, Google Chromecast, Spotify Connect, Tidal Connect, Roon Ready and UPnP, with Amazon Music, Qobuz, Deezer, internet radio and podcasts available through the KEF Connect app. Bluetooth 5.0 is included for direct pairing. For wired sources, the primary speaker offers HDMI ARC, TOSLINK optical, USB-C and 3.5mm analogue inputs, plus an Ethernet port for a wired network connection. An RCA subwoofer output allows a KEF subwoofer to be added, with subwoofer presets built into the Room EQ.
Source resolutions of up to 384kHz/24-bit are supported over the network, 96kHz/24-bit via optical and 192kHz/24-bit via USB-C. Supported formats include MQA, DSD, FLAC, WAV, AIFF, ALAC, AAC, WMA, MP3, M4A, LPCM and Ogg Vorbis. The two speakers connect to each other wirelessly, with all sources resampled to 48kHz/24-bit, or via the supplied interspeaker cable at 96kHz/24-bit.
The KEF Connect app walks through set-up and controls source selection, volume and playback. Its Room EQ offers a guided Normal mode and an Expert mode with Desk Mode, Wall Mode, Treble Trim, Phase Correction, Bass Extension and balance adjustments, so the system can be tuned to its position and the room. Home automation integration is supported for Elan, RTi, Crestron Home, Savant and Control4 systems. Mounting inserts on the cabinet allow secure placement on the KEF P1 desk pad, S1 floor stand or B1 wall bracket.
LSX II speakers, power cords, interspeaker cable, remote control, and the quick start guide with warranty and safety information.
| Drive Units | Uni-Q driver array (11th generation): 19mm aluminium dome tweeter, 115mm magnesium/aluminium alloy bass/midrange cone (per speaker) |
|---|---|
| Amplifier Output | LF: 70W, HF: 30W per speaker (Class D); 200W combined system power |
| Frequency Response | 54Hz - 28kHz (±3dB, measured at 85dB/1m, depends on EQ settings) |
| Frequency Range | 49Hz - 47kHz (-6dB, measured at 85dB/1m, depends on EQ settings) |
| Maximum SPL | 102dB (measured at 1m) |
| Wireless Streaming | AirPlay 2, Google Chromecast, Roon Ready, UPnP, Bluetooth 5.0, Plays with Audirvana |
| Streaming Services | Spotify Connect, Tidal Connect, Amazon Music, Qobuz, Deezer, QQ Music via QPlay, Internet Radio, Podcast |
| Inputs (Primary Speaker) | HDMI ARC, TOSLINK Optical, USB Type C, 3.5mm Analogue, RJ45 Ethernet (network), RJ45 Ethernet (interspeaker) |
| Inputs (Secondary Speaker) | RJ45 Ethernet (interspeaker) |
| Outputs | RCA subwoofer output (primary speaker) |
| Source Resolution | Network up to 384kHz/24-bit; Optical up to 96kHz/24-bit; USB Type C up to 192kHz/24-bit; HDMI up to 1.411Mbps PCM |
| Interspeaker Connection | Wireless: all sources resampled to 48kHz/24-bit PCM; Wired: all sources resampled to 96kHz/24-bit PCM |
| Supported Formats (Network) | MQA, DSD, FLAC, WAV, AIFF, ALAC, AAC, WMA, MP3, M4A, LPCM, Ogg Vorbis |
| Wi-Fi | IEEE 802.11a/b/g/n/ac, IPv4/IPv6; dual-band 2.4GHz / 5GHz |
| Home Automation | Elan, RTi, Crestron Home, Savant, Control4 |
| Finish | Cotton White: fabric-wrapped cabinet |
| Dimensions (H x W x D) | 240 x 155 x 180mm (per speaker) |
| Weight | 7.2kg (per set) |
| Power Input | 100 - 240VAC 50/60Hz |
| Power Consumption | 200W (operating); under 2.0W (standby) |
| In the Box | LSX II speakers, power cords, interspeaker cable, remote control, quick start guide |
| Also Available As | Soundwave Edition |
