Introduction

There are tons of streaming apps out there, but the only thing that matters to the KEF team is playing your music the way it was meant to be heard. Our LSX Wireless Music System allows you to play music your way with the convenience and connectivity of wireless. LSX is an active wireless stereo system developed from our award-winning LS50 Wireless. It is based on the same platform: Four amplifiers, one for each component of the signature Uni-Q drivers, a streaming preamplifier and an extremely powerful DSP engine with personalized sound settings. Don’t let the small package fool you: LSX is an audio powerhouse. From streaming to gaming, from TV to multi-room music, LSX is designed for all your home entertainment needs. Play what you like, how you like, where you like – and experience it all in brilliant high-resolution stereo. Our KEF Control App is easy to use and helps you personalize your sound quality settings to enjoy audio exactly how you like it. The LSX can also connect to Apple AirPlay 2. This guide will take you through connecting your LSX to some of the most popular electronics available to expand your listening experience. With each diagram is a grid showing the proper cables to use. 

Detailed Specifications

The KEF LSX Wireless Music System is a compact, high-performance speaker system that delivers stunning sound quality. It features KEF's Uni-Q driver array, which places the tweeter in the center of the midrange cone for a more accurate and immersive sound. The system also includes a powerful DSP (Digital Signal Processing) engine that provides accurate time alignment and equalization. The LSX supports high-resolution audio up to 24-bit/384kHz and features wireless connectivity via Wi-Fi, Bluetooth, and Apple AirPlay 2. It also includes an Ethernet port for wired connectivity.

Wireless Over view

LSX was designed for your tech-driven lifestyle. Nothing gets between you and your music. Connecting to Wi-Fi takes just a few moments with the KEF Control app. You can incorporate virtually any of your favourite listening apps and control how you stream right from your phone. LSX has been designed to make it easy to play your favourite music from wireless sources over your home network, whether it exists in the Cloud through services like Spotify or TIDAL, or on your own networked attached storage device (NAS drive). LSX also features a high quality Bluetooth 4.2 input, using Qualcomm’s aptX codec for a drastic improvement over standard Bluetooth audio codecs.

Cabled Over view

LSX features multiple cabled inputs, allowing you to connect almost anything. The next few pages show how to connect a number of  the most popular products to LSX. From SONOS, MusicCast and Bluesound to your television and turntable, we have your connections covered. With every diagram is a table showing the cables needed to complete the connections. 

HOW-TO CONNECT TO SONOS

Notes

• Disable Network Standby on LSX
• Keep LSX on the required source
• Set variable output in SONOS
• Use SONOS to adjust volume
• Set LSX Volume to 3/4

Bluesound Node

Bluesound Node products can be connected to LSX via RCA or optical connections. We suggest the optical output if possible.

Notes

• Disable Network Standby on LSX
• Keep LSX on the required source
• Set variable output in the BluOS app
• Use the BluOS app to adjust volume
• Set LSX Volume to 3/4

Yamaha Music Cast

Music Cast can be connected to LSX via RCA or optical connections. We suggest the optical output if possible.

Notes

• Disable Network Standby on LSX
• Keep LSX on the required source
• Set variable output in the Music cast app
• Use the Music cast app to adjust volume
• Set LSX volume to 3/4

Notes

• Disable Network Standby on LSX
• Keep LSX on the required source
• With RCA input, set to variable, and use HEOS app for volume
• With digital connection, volume is fixed only, use KEF Control app for volume

Denon HEOS

HEOS Link products can be connected to LSX via RCA or optical connections. HEOS Link only supports variable output via the RCA outputs, so this is recommended for ease of use.

Echo Dot

The Amazon Echo Dot features a 3.5mm RCA output, but can also be connected to LSX via Bluetooth. Unless the Echo Dot is moved frequently, it is preferable to connect with a cable for optimal performance. 

Notes: Amazon Echo Dot models that support USB charging can be connected to the 5V/2A USB-A connector on the rear of LSX for power

Television

LSX represents probably the best television audio upgrade short of going for either LS50 Wireless or a full KEF surround sound system. Combining natural sound with the ability to provide true stereo, the sound matches the on-screen action perfectly.

Notes: If using optical, please make sure the digital audio setting on your television is set to ‘PCM,’ otherwise audio may be distorted or not played at all. Please refer to the manual for your television on how to do this.  

Turntable

With the ‘vinyl revival’ in full swing, KEF has made it as easy as possible  to combine the venerable technology of the turntable with cutting edge  advances in digital audio systems.
Any turntable can be connected to LSX, provided there is a phono stage either built into the turntable itself, or as a separate box in-between the turntable and LSX. The connection used will be the RCA input on LSX.

Notes: Please refer to the instruction manual for your turntable to determine if you require an outboard phono stage. If you do not use when if required, the sound will be light in bass, very quiet and may well exhibit a hum due to the turntable not being grounded.

System/Acoustics

Active wireless speaker system containing everything required to replay music in high resolution

• 2 x 70w Class D amplification (Woofers) 
• 2 x 30w Class D amplification (Tweeters)

Brand new 4.5” Uni-Q for natural sound and wide sweet spot Choice of interspeaker connectivity:

• Wireless (24bit/48kHz resolution)
• Wired (24bit/96kHz resolution)

Music Integrity Engine (Digital Signal Processing) includes phase correction  (timing correction) and speaker sound settings for adapting the sound based on  placement, listening environment and personal taste Stereo setup provides an expansive soundstage – a 3-D image of sound providing  an immersive experience for both music and film.

Functionality

• Wireless: WiFi (DLNA), Spotify Connect, TIDAL, Roon Tested, Apple AirPlay 2 (early 2019), Bluetooth 4.2 w/ aptX  
• Wired: Optical (TOSLINK), Aux (analogue 3.5mm stereo)
• USB output (5V/2A) for charging compatible devices
• Subwoofer output (RCA)
• KEF Control and KEF Stream apps available for Apple and Android

Description

The KEF LSX Wireless Music System is a stylish and versatile speaker system that delivers high-fidelity sound in a compact package. Its wireless connectivity makes it easy to set up and use, and its Uni-Q driver array provides a wide and even sound dispersion. The system is also highly customizable, with a range of colors and finishes to choose from. Whether you're listening to music, watching movies, or playing games, the KEF LSX Wireless Music System delivers an immersive and engaging sound experience.

Troubleshooting

If you're having trouble with your KEF LSX Wireless Music System, here are some common problems and solutions:

• No sound: Make sure the speakers are turned on and connected to a power source. Check the volume level and the source of the audio.
• Poor wireless connection: Make sure the speakers are within range of your Wi-Fi router or Bluetooth device. If necessary, try moving the speakers closer to the router or device.
• Audio dropouts: This can be caused by interference from other wireless devices. Try moving the speakers away from other devices such as cordless phones or microwaves.
• Distorted sound: Check the volume level and the source of the audio. If the sound is still distorted, try resetting the speakers to their factory settings.

Pros & Cons

Pros

• Compact and stylish design
• High-fidelity sound quality
• Wireless connectivity via Wi-Fi, Bluetooth, and Apple AirPlay 2
• Customizable with a range of colors and finishes

Cons

• May be too expensive for some budgets
• Wireless connectivity can be affected by interference from other devices

Customer Reviews

Customers rave about the KEF LSX Wireless Music System's sound quality and ease of use. They appreciate the system's compact size and customizable design, and many note that it's a significant upgrade from their previous speaker systems. However, some customers have noted issues with the wireless connectivity, particularly in areas with a lot of interference.