Introduction
Welcome to the user manual for your KEF LSX II Wireless HiFi Speaker System. This system is designed to deliver high-fidelity sound with comprehensive connectivity options. It supports streaming up to 24bit/384kHz and offers seamless integration with various devices and streaming services.
What's in the Box
Please ensure all the following components are present in your package:
- 1 Pair LSX II Speakers
- Remote Control
- 1 Set of Power Cords
- 1 Interspeaker Cable
- Quick Start Guide

Image: The KEF LSX II Wireless HiFi Speaker System in Carbon Black, showing both speakers from a slight angle.
Setup
1. Speaker Placement
For optimal sound performance, place the LSX II speakers on a stable, flat surface such as a bookshelf, desktop, or dedicated speaker stands. Ensure there is adequate space around the speakers for proper ventilation. The Uni-Q technology provides a wide sweet spot, but careful placement can further enhance the listening experience.

Image: KEF LSX II speakers positioned on a desk, demonstrating a typical desktop setup.

Image: KEF LSX II speakers on stands in a living room, flanking a television, illustrating a home entertainment setup.
2. Connecting the Speakers
The LSX II system consists of a primary and a secondary speaker. You can connect them wirelessly or via the included interspeaker cable for enhanced audio quality.
- Wired Connection: Connect the primary and secondary speakers using the supplied interspeaker cable. This provides the most stable connection and highest audio resolution.
- Wireless Connection: For wireless interspeaker connection, ensure both speakers are powered on and within range. Refer to the KEF Connect app for pairing instructions.

Image: Rear view of the primary KEF LSX II speaker, highlighting the various input ports including HDMI ARC, USB-C, Optical, AUX, and network connections.
3. Power Connection
Connect each speaker to a power outlet using the provided power cords.
Operating Instructions
1. Initial Setup with KEF Connect App
Download the KEF Connect app from your device's app store. The app guides you through connecting the speakers to your Wi-Fi network and configuring settings.

Image: A smartphone screen showing the KEF Connect app interface, with logos for Google Play and Apple App Store, indicating app availability.
2. Connectivity Options
- Wi-Fi Streaming: Connect to your home Wi-Fi network via the KEF Connect app to access integrated streaming services like Spotify, Tidal, Amazon Music, Qobuz, Deezer, and QQ Music.
- Bluetooth: Pair your device via Bluetooth for quick wireless audio playback.
- HDMI ARC: Connect your television using the HDMI ARC port for high-quality audio from your TV.
- USB-C: Connect to a laptop or other compatible devices for direct audio playback.
- Optical Input: Use the optical input for digital audio sources.
- AUX Input: Connect analog audio sources using a 3.5mm auxiliary cable.
- Subwoofer Output: Connect an external subwoofer for enhanced bass performance.
- AirPlay 2 & Chromecast: Stream audio wirelessly from Apple and Android devices.
- Roon Ready: Integrate with Roon for a comprehensive music management and playback experience.
3. Remote Control
Use the included remote control to adjust volume, switch inputs, and control playback.
Maintenance
To ensure the longevity and optimal performance of your KEF LSX II speakers, follow these maintenance guidelines:
- Cleaning: Gently wipe the speaker surfaces with a soft, dry, lint-free cloth. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the finish.
- Placement: Keep speakers away from direct sunlight, heat sources, and excessive moisture. Ensure good air circulation around the units.
- Handling: Handle the speakers with care. Avoid dropping them or subjecting them to strong impacts.
- Grilles: The speaker grilles are designed to protect the drivers. Keep them in place during normal use.
Troubleshooting
If you encounter any issues with your KEF LSX II system, refer to the following common troubleshooting steps:
| Problem | Possible Cause / Solution |
|---|---|
| No Sound |
|
| Intermittent Audio Dropouts |
|
| Cannot Connect to Wi-Fi |
|
| Remote Control Not Working |
|
For more detailed troubleshooting or issues not listed here, please refer to the comprehensive user manual available on the official KEF website or contact KEF customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Name | LSX II Wireless |
| Speaker Type | Bookshelf |
| Mounting Type | Tabletop Mount |
| Color | Carbon Black |
| Product Dimensions | 7.1"D x 6.1"W x 9.5"H |
| Item Weight | 21 pounds (for the pair) |
| Speaker Maximum Output Power | 200 Watts |
| Frequency Response | 54 Hz (lower limit, actual range is wider) |
| Woofer Diameter | 4.5 Inches |
| Tweeter Diameter | 0.75 Inches |
| Audio Output Mode | Stereo |
| Connectivity Technology | Wi-Fi, Bluetooth |
| Wireless Communication Technology | Bluetooth, Airplay, Wi-Fi |
| Bluetooth Range | 10 Meters |
| Control Method | App, Remote Control |
| Compatible Devices | Laptop, Television, Mobile Devices |
| Power Source | Corded Electric |
| UPC | 637203047879 |

Image: A KEF LSX II speaker with its dimensions (height, width, depth) clearly indicated.
Warranty and Support
The KEF LSX II Wireless HiFi Speaker System comes with a Limited Warranty. For specific terms and conditions of your warranty, please refer to the warranty card included in your product packaging or visit the official KEF website.
For technical support, product registration, or further inquiries, please visit the KEF support page on their official website or contact their customer service directly.
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