KEF LSX II User manual

Table of ContentsSetting UpWi-Fi StreamingUsing KEF Connect AppFAQ and Troubleshooting
User Manual
LSX II

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Table of Contents
1. Introduction ...............................................................................................................................5
2. General Information.................................................................................................................6
2.1 Reading and Storing the User Manual.............................................................................................................6
2.2 SignalSymbol/WordDenitions ........................................................................................................................6
3. In the Box and Unpacking.......................................................................................................7
4. Setting Up LSX II.......................................................................................................................8
4.1 Selecting an Appropriate Router.......................................................................................................................8
4.2 Connecting to Power.................................................................................................................................................9
4.3 Onboarding...................................................................................................................................................................10
4.3.1 Installing the KEF Connect App...............................................................................................................10
4.3.2 Using iOS Devices............................................................................................................................................ 11
4.3.3 Using Android Devices with Google Play Service.......................................................................12
4.3.4 Using Android Devices without Google Play Service...............................................................14
4.4 Speaker Placement and Connection.............................................................................................................16
4.5 Installation Accessories..........................................................................................................................................17
4.5.1 Wall Brackets.......................................................................................................................................................17
4.5.2 Desk Pads...............................................................................................................................................................17
4.5.3 Floor Stands..........................................................................................................................................................17
5. Connection and Control Interface.....................................................................................18
5.1 Front Panel.....................................................................................................................................................................18
5.2 Back Panel ......................................................................................................................................................................19
5.3 Bottom Panel ...............................................................................................................................................................20
5.4 LED Indications...........................................................................................................................................................21
5.5 Remote Control.........................................................................................................................................................22
5.6 KEF Connect App.....................................................................................................................................................23
6. Wi-Fi Streaming ......................................................................................................................24
6.1 Wireless Streaming Protocols...........................................................................................................................24
6.1.1 AirPlay 2..................................................................................................................................................................24
6.1.2 Chromecast..........................................................................................................................................................25
6.1.3 ROON Ready......................................................................................................................................................26
6.1.4 Music Streaming Apps Native Protocols ...........................................................................................27
6.1.4.1 Spotify Connect......................................................................................................................................27
6.1.4.2 QPlay .............................................................................................................................................................28
6.1.4.3 TIDAL Connect ....................................................................................................................................29
6.1.5 KEF Connect App Streaming ....................................................................................................................30
6.1. 5.1 Amazon Music .........................................................................................................................................30
6.1.5.2 Deezer..........................................................................................................................................................30
6.1.5.3 Qobuz...........................................................................................................................................................30
6.1.5.4 Spotify...........................................................................................................................................................30
6.1.5.5 TIDAL............................................................................................................................................................31
6.1.5.6 Internet Radio..........................................................................................................................................31
6.1.5.7 Podcasts.......................................................................................................................................................31
6.1.6 UPnP Playback ....................................................................................................................................................31
6.2 Tips on Choosing Streaming Protocols .......................................................................................................32
7. Multi-Room Streaming...........................................................................................................33
7.1 AirPlay 2 ..........................................................................................................................................................................33

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7.2 Chromecast ..................................................................................................................................................................33
7.3 ROON..............................................................................................................................................................................35
8. Voice Control Over Mobile Device .................................................................................. 36
8.1 Siri........................................................................................................................................................................................36
8.2 Google Assistant........................................................................................................................................................36
9. Playback with Bluetooth .......................................................................................................37
9.1 Selecting Bluetooth Mode...................................................................................................................................37
9.2 Bluetooth Pairing .......................................................................................................................................................37
9.3 Playback Controls......................................................................................................................................................38
10. Playback with HDMI ARC input .........................................................................................39
10.1 HDMI Cable Connection.....................................................................................................................................39
10.2 Selecting TV Mode...................................................................................................................................................40
10.3 Playback Controls......................................................................................................................................................40
11. Playback with Optical Input .................................................................................................41
11.1 Optical Cable Connection ..................................................................................................................................41
11.2 Selecting Optical Mode.........................................................................................................................................42
11.3 Playback Controls......................................................................................................................................................42
12. Playback with USB Input.......................................................................................................43
12.1 USB Connection........................................................................................................................................................43
12.2 Selecting USB Mode................................................................................................................................................44
12.3 Playback Controls......................................................................................................................................................44
13. Playback with Auxiliary Input ............................................................................................. 45
13.1 Auxiliary Cable Connection...............................................................................................................................45
13.2 Selecting Auxiliary Mode......................................................................................................................................46
13.3 Playback Controls......................................................................................................................................................46
14. Using KEF Connect App .......................................................................................................47
14.1 Home................................................................................................................................................................................47
14.1.1 Overview ...............................................................................................................................................................47
14.1.2 Editing the Home Screen.............................................................................................................................48
14.2 Remote Control.........................................................................................................................................................48
14.3 Music Content.............................................................................................................................................................49
14.3.1 Playing Music from Music Streaming Services ................................................................................50
14.3.1.1 Amazon Music .........................................................................................................................................50
14.3.1.2 Deezer..........................................................................................................................................................51
14.3.1.3 Qobuz...........................................................................................................................................................52
14.3.1.4 Spotif y ...........................................................................................................................................................52
14.3.1.5 Tidal................................................................................................................................................................53
14.3.1.6 Internet Radio..........................................................................................................................................54
14.3.1.7 Podcast.........................................................................................................................................................54
14.3.2 Playback Controls.............................................................................................................................................55
14.3.2.1 Playback Screen ......................................................................................................................................55
14.3.2.2 Search............................................................................................................................................................55
14.3.2.3 Favourites....................................................................................................................................................56
14.3.2.4 Playing Queue..........................................................................................................................................57
14.3.2.5 Playlists..........................................................................................................................................................59
14.4 Equalisations.................................................................................................................................................................. 61
14.4.1 Normal Mode .....................................................................................................................................................61
14.4.2 Expert Mode........................................................................................................................................................63

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14.4.3 SelectingaSoundProle .............................................................................................................................66
14.4.4 RenamingaSoundProle ...........................................................................................................................66
14.4.5 DeletingaSoundProle ..............................................................................................................................67
14.5 Prole................................................................................................................................................................................68
14.6 Choosing Your Speaker.........................................................................................................................................69
14.6.1 My Speaker and Speakers Nearby.........................................................................................................69
14.6.2 Speaker Info ........................................................................................................................................................70
14.7 Speaker Preferences................................................................................................................................................71
14.7.1 Power Saver – Standby Mode ..................................................................................................................71
14.7.2 Power Saver – Second Wake-Up Source.........................................................................................71
14.7.3 Do Not Disturb – Standby LED .............................................................................................................71
14.7.4 Do Not Disturb – Start Up tone ...........................................................................................................72
14.7.5 Speaker System Options – Cable Mode ...........................................................................................72
14.7.6 Speaker System Options – Inverse L/R Speakers........................................................................72
14.7.7 KW-1 Power Mode .........................................................................................................................................72
14.8 Volume .............................................................................................................................................................................73
14.8.1 Volume Display Setting.................................................................................................................................73
14.8.2 Hardware Volume............................................................................................................................................74
14.8.3 Speaker Volume Sensitivity ........................................................................................................................74
14.8.4 Maximum Volume............................................................................................................................................74
14.9 Performance.................................................................................................................................................................75
14.9.1 Streaming Settings – Audio Quality......................................................................................................75
14.9.2 Network quality.................................................................................................................................................75
14.10 Firmware Upgrade....................................................................................................................................................77
14.10.1 Automatic Firmware Update after Onboarding...........................................................................77
14.10.2 Automatic Firmware Check.......................................................................................................................77
14.10.3 Manual Firmware Update............................................................................................................................78
14.11 Application.....................................................................................................................................................................79
14.11.1 Theme Settings – Theme............................................................................................................................79
14.11.2 Theme Settings – Reset Home Screen ..............................................................................................79
14.11.3 Analytics – Improve App/Speaker.........................................................................................................79
14.12 Support............................................................................................................................................................................80
15. Cleaning and Maintenance ................................................................................................... 81
16. Disposal .................................................................................................................................... 82
16.1 Disposing of the Packaging ..................................................................................................................................82
16.2 Disposing of the Speakers....................................................................................................................................82
16.3 Disposing of the Battery.......................................................................................................................................82
17. FAQ and Troubleshooting ................................................................................................... 83
17.1 Set-up ..............................................................................................................................................................................83
17.2 Playback and Streaming .........................................................................................................................................85
17.3 Troubleshooting .........................................................................................................................................................87
17.4 LED Indicators.............................................................................................................................................................90
18. Appendix.................................................................................................................................. 94
18.1 Specications................................................................................................................................................................94
18.2 Speaker Connection Test.....................................................................................................................................96
18.3 Explanation of symbols.......................................................................................................................................101
18.3.1 Warning Symbols........................................................................................................................................... 101
18.3.2 Regional Symbols ...........................................................................................................................................101
18.4 IR Command Codes.............................................................................................................................................103

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Table of ContentsSetting UpWi-Fi StreamingUsing KEF Connect AppFAQ and Troubleshooting
1. Introduction
Thank you for choosing KEF wireless speaker system – LSX II.
Innovation is what sets KEF apart from its competitors. For the last 60 years KEF has
been at the forefront of loudspeaker research and development, designing class-leading
speakers that have dealt with the challenges of reproducing the latest musical formats,
and reproducing them to the highest possible quality. This legacy continues today with
the LSX II, our compact, yet powerful speaker system for the digital music era.
The award-winning LSX just got an upgrade. Building on the acoustic excellence of the
original, LSX II adds the W2 streaming platform from LS50 Wireless II and adds both
HDMI ARC and USB-C to its already impressive connectivity suite. Room filling, natural
sound, great looks and ‘place anywhere’ size – LSX II just makes HiFi easy.
Please read and follow this user manual carefully before using the speaker system.

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Table of ContentsSetting UpWi-Fi StreamingUsing KEF Connect AppFAQ and Troubleshooting
2. General Information
2.1 Reading and Storing the User Manual
This user manual accompanies the LSX II speaker system (hereafter
referred to as the “speakers”), and contains important information on
setup and handling.
Before using your speakers, read this user manual and the safety information (as a
separate booklet) carefully. This particularly applies to the safety information. Failure to
do so may result in personal injury or damage to the speakers.
Retain the user manual and safety information for further use. Make sure to include the
user manual and safety information when passing the speakers on to third parties.
2.2 Signal Symbol/Word Definitions
The following symbols and signal words are used in this user manual.
WARNING! This signal symbol/word designates a hazard with moderate
risk, which may result in death or severe injury if not avoided.
NOTICE! This signal word warns of possible damage to property.
This symbol provides you with useful additional information
on handling and use.

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Table of ContentsSetting UpWi-Fi StreamingUsing KEF Connect AppFAQ and Troubleshooting
3. In the Box and Unpacking
Be very careful when opening the packaging. Follow the instructions on the packaging
to lift up the speakers from the sides to avoid damaging the Uni-Q drivers.
×1 set
×1 ×1 ×2 ×4
1. Take the speakers and accessories out of the packaging.
2. Check to make sure that all parts are included, namely:
• Speaker ×2 (Primary Speaker ×1, Secondary Speaker ×1)
• Remote control ×1 (with 2 AAA batteries)
• Inter-speaker cable ×1 (length: 3 m)
• Power cable ×2 (length: 2 m, with country-specific power plugs)
• Printed materials: Quick Start Guide, Safety Information,Warranty Information and
Fabric Cleaning Guide
3. Check whether the speakers or individual parts are damaged. If this is the case, do
not use the speakers and contact your retailer.

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Table of ContentsSetting UpWi-Fi StreamingUsing KEF Connect AppFAQ and Troubleshooting
4. Setting Up LSX II
4.1 Selecting an Appropriate Router
The speakers must be “onboarded” to your Wi-Fi network (see chapter
“Onboarding”) for the best sound quality, wireless streaming and comprehensive
control.
Technical Requirements of your Router
• Network standard: IEEE 802.11a/b/g/n/ac, IPv4, IPv6,
• Frequency band: Dual-band 2.4 GHz / 5 GHz
• A 5 GHz Wi-Fi network is recommended for stable streaming, especially for
hi-resolution music.
• Connecting to a guest, office or public network: Office, hotel, guest and
public networks often feature additional security or authentication methods
which may prevent the speakers from connecting. You may need the help of
the network administrator to configure the network to allow full functionality
if using these kinds of networks.

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Table of ContentsSetting UpWi-Fi StreamingUsing KEF Connect AppFAQ and Troubleshooting
4.2 Connecting to Power
1. Connect the power cables into the AC input connectors (A) on the back panels of
the Primary and Secondary Speakers.
2. Connect the power plugs into the power sockets/outlets.
After successful power connections, the LED indicator light of the Primary Speaker
will blink white and amber. The speakers are now ready to be “onboarded” to your
personal Wi-Fi network through the KEF Connect App (see chapter “Onboarding”).

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Table of ContentsSetting UpWi-Fi StreamingUsing KEF Connect AppFAQ and Troubleshooting
4.3 Onboarding
4.3.1 Installing the KEF Connect App
Install the KEF Connect App on your mobile device to get the speakers “onboarded”
to your Wi-Fi network.
1. Search “KEFConnect” in the App Store or Google Play Store to download and install
the KEF Connect App on your iOS* or Android** device.
2. Launch the KEF Connect App on your device and create a user account. You may
log in with your existing Facebook, Google or Apple account, or create a new KEF
account with your email address.
*Requires iOS 14 or above. Refer to App Store for the latest requirements.
**Requires Android 8 or above. Refer to Google Play for the latest requirements.