LSX FAQ and Troubleshooting User Manual Playback and Streaming Using the KEF Control App Setting Up the LSX Table of Contents
Table of Contents 1. Introduction................................................................................................................................4 2. General Information..................................................................................................................5 2.1 2.2 Reading and Storing the User Manual.......................................................................................................................5 Signal symbol/word definitions................
9.1.1.4 Playing Music from Connected Device (Library)......................................................................39 9.1.1.5 Playing Music from Media Servers.......................................................................................................39 9.1.1.6 Playing Music from TIDAL.........................................................................................................................39 9.1.1.7 Playing Music from Spotify..................................................
Introduction Thank you for choosing KEF wireless high-resolution speaker system – LSX. Innovation is what sets KEF apart from its competitors. For over 50 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, our compact, yet powerful speaker system for the digital music era.
2.1 Reading and Storing the User Manual This user manual accompanies the LSX speaker system (hereafter referred to as the “speakers”), and contains important information on setup and handling. Before using your speakers, read the user manual carefully. This particularly applies to the safety instructions. Failure to do so may result in personal injury or damage to the speakers. Retain the user manual for further use. Make sure to include this user manual when passing the speakers on to third parties. 2.
Use the speakers only as described in this user manual. Any other use is deemed improper and may result in damage to property or even personal injury. The speakers are not a toy. The manufacturer or vendor accepts no liability for damage caused by improper or incorrect use. 3.2 Safety Instructions 3.2.1 Notes on Electrical Safety WARNING! Risk of electric shock! Improper handling of the speakers may result in electric shock.
• Never touch the power plug with wet or damp hands. • Do not pull the power plug out of the socket/outlet by the cable; instead, always pull it out by the plug itself. • Never move, pull, or carry the speakers by their power cables. Table of Contents • Do not use the speakers if they are damaged or if the power cable or plug is defective. • Lay the power cables so that they do not pose a tripping hazard.
WARNING! Risk of injury and damage! Improper handling of the speakers may increase the risk of injury and damage. • Read these instructions. Table of Contents 3.2.3 General Safety Notes • Keep these instructions - for future reference. • Follow all instructions. • Do not use the speakers near water. • The speakers shall not be exposed to dripping or splashing and no objects filled with liquids such as vases, shall be placed on the speakers.
3.2.4 Electromagnetic Interference The normal function of the product may be disturbed by strong electromagnetic interference. If so, simply reset the product to resume normal operation by following the user manual. In case the function could not resume, please use the product in other location. 3.2.5 FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
The device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS-102 RF exposure, users can obtain Canadian information on RF exposure and compliance. The device for operation in the band 5150-5250 MHz is only for indoor use to reduce the potential harmful interference to co-channel mobile satellite systems.
• 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 (speaker cones). ×2 ×1 ×1 ×2 ×5 1. Take the speakers out of the packaging. 2.
Controls and Connections 5.1 Front Panel Slave Speaker Master Speaker • An LED indicator can be found on each speaker, below the Uni-Q driver (speaker cone). • The IR (infrared) receiver for the remote control can be found on the Master Speaker where the LED indicator is located. Using the KEF Control App Setting Up the LSX Table of Contents 5. • The Slave Speaker is initially connected to power and is working properly. The LED indicator will briefly come on orange and then go out.
Back Panel M Master-Slave pairing button Enables Bluetooth pairing. The speakers will be ready to pair a new device. Any Bluetooth connected device will be disconnected. Re-establishes the connection between the Master and Slave Speakers if the connection is lost. R Factory reset button (inside the small hole) Resets the speakers to the factory defaults. O Optical input port Plays audio input from a source (e.g. television*, game console) through an optical cable (not provided).
*Make sure your television is set to output digital audio in PCM format. Refer to the user manual of your television for details. A threaded hole (¼–20 UNC) can be found on the underside of each speaker for stands or wall mounting. See chapter “Installing the Speakers”. 5.
Status Indication (LED indicator) Alternating between The speakers are ready to connect to a Wi-Fi network. white and orange Launch the KEF Control app to set up the speakers. The speakers are in Standby Mode and connected to a Solid orange Wi-Fi network. Solid white The speakers are operating in Wi-Fi Mode. Solid green The speakers are operating in Spotify Connect Mode. Solid blue The speakers are operating in Bluetooth Mode and a device is already paired with the speakers.
Setting Up the LSX 7.1 Installing the Speakers • The speakers should be placed on a flat and level surface that is free from vibration. • The speakers can be mounted on stands or on the wall. A threaded hole (¼–20 UNC) can be found on the underside of each speaker. Table of Contents 7. A B C A=B=C The optimum distance between the speakers and the listener will depend on how far the Master and Slave Speakers are separated.
For comprehensive control and to enjoy streaming muisc, install the KEF Control app and KEF Stream app on your iOS* or Android** devices. Search “KEF Control” and “KEF Stream” in the App Store or Google Play Store to download and install the apps. The KEF Control app allows you to set up the speakers, apply sound settings, turn on/off the speakers and switch sound sources. The KEF Stream app allows you to access to and play back your locally or network stored music.
Android and iOS (Non Airplay 2) Method Airplay 2 is available from firmware version 4.0. After firmware upgrade, iOS users should follow the chapter "iOS (Airplay 2) Method" to perform the setup. 1. To connect LSX to your network, open the KEF Control app on your device. Select “KEF LSX” from the selection menu and then tap “Next”. Table of Contents 7.4.2 3. The LED indicator on the Master Speaker will flash orange and white, indicating that the speakers are ready for connection. Tap “Next”. 2. 3. 4.
9. Select your Wi-Fi network from the list, enter the password of your Wi-Fi network and then tap “Next”. 10. Create a name for the speakers (optional) and then tap “Next”. The onboarding process will be automatically completed. The LED indicator on the Master Speaker will light solid white when the connection is successful. The Slave Speaker will be automatically and wirelessly connected to the Master Speaker. 10.
iOS (Airplay 2) Method Once your speakers are upgraded with Airplay 2, iOS users can use this method to connect the speakers to your network. 1. To get the speakers connected to a network, connect the power cables to the AC input connectors at the back of the speakers. The LED indicator on the Master Speaker will flash orange and white. Table of Contents 7.4.3 The onboarding process will be automatically completed.
Over the Air Firmware Update 7.5.1 Automatic Update Alert 1. You will be reminded to update the firmware if a newer version is available. Tap “Update” to continue. 2. Connect the Master and Slave Speakers with the provided inter-speaker cable through the “To Master/Slave” connection ports on the back of the speakers and then tap “Next”. Cable Mode will also be automatically activated (see chapter “Cable Mode”). Table of Contents 7.
Checking for Update Manually 1. To check whether a firmware update is available, launch the KEF Control app. 2. Tap the speaker settings icon ( ) at the top right corner to access the settings menu. 3. Tap “Firmware Update”. 4. If a new firmware is available, tap “Update”. Table of Contents 7.5.2 5. Follow the instructions on the KEF Control app to complete the update (see chapter “Automatic Update Alert”).
Setting Up Without Wi-Fi You can still set up the speakers without a Wi-Fi network. However, this will limit the controls and functionality of the speakers. In addition, important updates and bug fixes will be missed without Wi-Fi connection. 1. To set up without Wi-Fi connection, connect the power cables to the AC input connectors at the back of the speakers. The LED indicator on the Master Speaker will flash orange and white. Table of Contents 7.6 4.
Control Interface 8.1 Using KEF Control App The KEF Control app lets you set up the speakers, apply sound settings, turn the speakers on and off and switch sound sources. Home Screen KEF Stream app Mute Volume control EQ settings Sound profile Speaker selection Selects a pair of speakers available for control through the KEF Control app. You can also add a new pair of compatible speakers by selecting “Add new speaker”. Volume control Tap once and then use the volume slider to adjust the volume.
Sound Optimization: EQ Settings ) at the Playback and Streaming 2. Then tap “Add New Profile” to proceed. Using the KEF Control App Setting Up the LSX 1. To adjust the sound settings of the speakers, tap the EQ settings icon ( lower right corner in the home screen. Table of Contents 8.1.2 FAQ and Troubleshooting You can then select between Basic and Expert Modes. The sound adjustments you have configured in Basic or Expert Mode are the same.
• Installation location: On a stand or on a desk • Distance from front edge of the table (on a desk only) (> 50 cm to 0 cm) FAQ and Troubleshooting • Distance to the wall (< 10 cm to > 50 cm) Playback and Streaming Basic Mode lets you configure the EQ settings according to your listening area.
• How large is the room? (< 20 m2 / 20–40 m2 / > 40 m2) • A subwoofer is plugged in (On / Off). If a subwoofer is plugged in, set up the subwoofer volume and speaker/subwoofer balance. When the settings are done, tap “Save” at the bottom of the screen and create a name for saving your sound profile.
The Expert Mode lets you configure the EQ preferences in greater precision. Setting Up the LSX Table of Contents • Expert Mode • Desk Mode (On / Off, -6.0 dB to 0.0 dB) • Wall Mode (On / Off, -6.0 dB to 0.0 dB) • Treble Trim (-2.0 dB to 2.
How large is your room (Expert Mode: Bass Extension): This setting adjusts the bass extension of the speakers. The larger the room selected, the lower the roll-off point is. Understanding the Subwoofer Settings Subwoofer/Speaker Balance (Basic Mode): This controls the bass output between the subwoofer and the speakers. If the slider is moved more to “Subwoofer”, most of the bass output will be handled by the subwoofer. High-Pass Mode: Frequencies above the set point will be played by the speakers.
Setting Up the LSX 1. Tap the name of the current sound profile at the bottom of the home screen. Table of Contents Selecting a Sound Profile FAQ and Troubleshooting Playback and Streaming Using the KEF Control App 2. Select a sound profile from the selection menu.
Adjusting the Settings of the Speakers Once the cable is connected, enable Cable Mode to disable the wireless connection. Cable Mode is required/recommended when: • You are performing a firmware update. • You prefer a better resolution at 96 kHz/24 bit (wireless: 48 kHz/24 bit). • You are experiencing audio dropouts due to interference. • Inverse L/R Speakers Enable this setting to change the master channel to the left (L) channel.
This lets you configure the following: • Hardware Volume Buttons This feature is only available on iOS devices. The hardware volume buttons refer to the physical volume buttons on your device. Disable this feature when you are experiencing conflicts with other music streaming apps over Wi-Fi. Table of Contents • Volume Settings This feature lets you configure the volume steps for each single press of the physical volume buttons of your device.
4. Connect the LAN cable from your router to the network port [N] of the Master Speaker. Then tap “Next”. 5. Connect the Master and Slave Speakers with the provided inter-speaker cable through the “To Master/Slave” connection ports on the back of the speakers. Then tap “Next”. 4. 5. 7.
• Advanced Settings This lets you configure the following: Table of Contents Depending on the nature of failure, you may see an alert with a “Start recovery” button in the KEF Control app during the firmware update. In this case, closely follow the instructions in the app to carry out the recovery. • My Speakers • Analytics This allows the KEF Control app to send crash reports and improvement analytics to the manufacturer. We recommend to enable both items.
The remote control lets you perform basic controls of the speakers. On/off button Source button Volume down button Volume up button Mute button 8.2.1 Turns on or off the speakers. Decreases the volume. Mutes or restores the sound output. Skips to the previous track. Selects a sound source (Wi-Fi, Bluetooth, Optical and AUX). Increases the volume. Plays or pauses the playback. Skips to the next track.
Playback and Streaming 9.1 Playback with Wi-Fi 9.1.1 Using the KEF Stream App The KEF Stream app allows you to access to and play back your locally or network stored music as well as music from streaming services (Spotify and Tidal). Table of Contents 9. Speaker selection Main menu Playlists KEF Control app Search Setting Up the LSX 9.1.1.1 Home Screen Main menu Shows the list of speakers available for streaming through the KEF Stream app.
Home Remote control News Local music Table of Contents 9.1.1.2 Main Menu Home Accesses Home Screen. Remote control Prompts to the KEF Control app. News Checks out the latest updates on new features, firmware update and other useful information. Accesses the local library. Displays compatible music files saved on device. Accesses the settings menu.
Queue Track scroll Option Track metadata Favourites Previous/next Repeat Play/pause Shuffle Volume control Shows the metadata (e.g. song name) of the track. Favourites Adds the track to favourites. Shuffle Activates/deactivates the random playback of tracks. Volume control Tap once and then use the volume slider to adjust the volume. Queue Accesses the queue. Track scroll Previous/next Shows the playback progress. Drag the dot along the bar to skip to a particular point of the track.
This lets you play compatible music files stored in the connected device (e.g. mobile phone). 1. Tap “Library” to show the music files stored in the device. Table of Contents 9.1.1.4 Playing Music from Connected Device (Library) 2. Browse and select a track to play. 9.1.1.5 Playing Music from Media Servers This lets you play compatible music files stored in the music library of a connected media server (e.g. NAS drive via DLAN/uPnP). The media server must be on the same network as the speakers.
To show the favourites in your local library, tap “Favourites” from the main menu. The recently added favorites can be found on the home screen. • Selecting or Deselecting a Track as Favourites From the playback screen, tap the heart icon ( favorites, or ) to select or deselect the track as From a list of tracks, tap the option icon (…) on the right hand side and then select “Add to Favorites” or “Remove from Favourites”. 9.1.1.
1. From a list of tracks, tap the option icon (…) on the right hand side. 2. Select “Add to Queue”. Depending on your selections, you can also add all tracks from an artist, all tracks from an album, or all tracks from a playlist in the queue. You can also replace all tracks in the current queue with the new tracks by selecting “Replace the queue”. • Showing the Current Queue ) at the top right corner.
) at the top right corner. 2. To remove a track from the queue, select the track by tapping in the circle and then tap the trash bin icon ( ). ) on the right FAQ and Troubleshooting Playback and Streaming Using the KEF Control App 3. To edit the playback sequence, press and hold the three bars ( hand side and then drag the track up or down the queue. Setting Up the LSX 1.
• Playing Back a Playlist Select a playlist and then tap “Play all tracks” to start playback of the playlist. • Creating a Playlist 1. Tap “Playlists” from the main menu. 2. Tap “Add New”. Playback and Streaming 3. Create a name for the playlist and select an image as cover (optional). Setting Up the LSX Tap “Playlists” from the main menu to show the playlists created in the KEF Stream app and from your local library. The recently played playlists can also be found on the home screen.
1. From a list of tracks or from the playback screen, tap the option icon (…) on the right and then select “Add to Playlist”. 2. Select the playlist you want the track to add to. Table of Contents • Adding Tracks to a Playlist 1. Tap “Playlists” from the main menu. 2. Tap the playlist to be edited. 3. Tap the option icon (…) at the top right corner. 4. Tap “Edit”. 5. To remove a track from the playlist, select the track by tapping in the circle and then tap the dustbin icon ( ).
1. Tap “Playlists” from the main menu. 2. Tap the playlist to be deleted. 3. Tap the option icon (…) at the top right corner. Setting Up the LSX 4. Tap “Delete Playlist”. Table of Contents • Deleting a Playlist FAQ and Troubleshooting Playback and Streaming Using the KEF Control App 5. Tap “Confirm”.
• Gapless Playback Enable this feature to eliminate gaps for media on the local network and reduce gaps for cloud streaming. Disable this feature if you are experiencing any playback issue. • Advanced Settings Setting Up the LSX Tap “Settings” from the main menu to show the settings menu. Table of Contents 9.1.1.12 Settings This allows you to register a new pair of speakers with the KEF Control app.
The speakers are ready for AirPlay 2* (Firmware 4.0 or later). 1. To stream audio through AirPlay 2, start playback on your iOS device. 2. Tap the AirPlay 2 icon ( ) at the bottom of the playback screen. 3. Select the “KEF LSX” speakers (or the name you have created for the speakers) from the selection menu. The audio output will be played from the selected speakers.
1. To stream music through Spotify Connect, tap “Spotify” from the main menu of the KEF Stream app. 2. Tap “Open Spotify”. You will be prompted to the Spotify app. 3. Browse and select a track to play in the Spotify app. 4. Select the speaker icon ( ) at the bottom of the playback screen. 5. Select the “KEF LSX” speakers (or the name you have created for the speakers) from the selection menu. The music will be played from the speakers. 5. Playback and Streaming 4. FAQ and Troubleshooting 2.
Streaming with Qplay QQ Music is one of China’s most popular online music streaming services. QPlay lets you stream music directly from the QQ Music app. The speakers are ready for the QPlay feature (Firmware 3.0 or later). 1. To stream music from QPlay, make sure your iOS/Android device and the speakers are on the same network. Table of Contents 9.1.4 2. Launch the QQ Music app and enable QPlay in the settings. ) on the playback screen. FAQ and Troubleshooting Playback and Streaming 5.
Streaming with Roon Roon is a high quality music management system that pulls together music from NAS driver, locally stored music (i.e. on your computer), compatible streaming services and Dropbox to create a searchable, surfable magazine about your music. The speakers are compatible with most of Roon’s features (Firmware 3.0 or later). Table of Contents 9.1.5 9.1.6 Streaming with DLNA The speakers are compatible with common DLNA* streaming software (e.g.
Playback with Bluetooth You can pair your Bluetooth devices (e.g. computers) with the speakers through Bluetooth connection. 9.2.1 Selecting Bluetooth Mode In the KEF Control app, press the Bluetooth button ( ) to switch to Bluetooth Mode. Table of Contents 9.2 1. In Bluetooth Mode, check the LED indicator on the Master Speaker. When the LED indicator slowly flashes blue, the speakers are in the discovery mode and ready to pair with a Bluetooth device.
Playback with Optical Input You can connect your devices with optical output (e.g. TV and game consoles) to the speakers through an optical cable. All playback controls (except adjusting volume) must be done on the connected device. 9.3.1 Optical Cable Connection Table of Contents 9.3 Or press the source button on the remote control to switch to Optical Mode. The speakers contain a very high quality optical input which works with most of the televisions via a standard TOSLINK cable.
Cleaning and Maintenance WARNING! Risk of electric shock! Improper cleaning of the speakers may result in injury. • Always unplug the power cables from the power socket/outlet before cleaning the speakers. Table of Contents 10. Risk of short circuit! Water and other liquids that have penetrated the housing may cause a short circuit. • Make sure that no water or other liquids penetrate the housing of the speakers. • Never immerse the speakers in water or other liquids.
Yes you can. However it is highly recommended you connect the LSX to a home network with a live internet connection, as most of the important features (TIDAL, Spotify Connect) and the KEF Control/Stream apps rely on these. In addition, without an internet connection you will miss out on important updates including bug fixes and new features. Please refer to “Setting up without Wi-Fi” for more details on how to disable the network functionality so you can use the LSX without a Wi-Fi network. 2.
By default the Master will be the Right channel. It should be placed on the right hand side of the speaker as you face it. The Slave or Left channel should be placed on the left hand side of the speaker. You can swap the channels inside the KEF Control app: Settings > Inverse L/R Speakers. Table of Contents 5. How can I distinguish between the Left and Right speakers? 6.
In other words, the speaker distance between the Master and Slave Speakers (A) should be the same as the distance between the Slave Speaker and the Listener (B) and the distance between the Master Speaker and the Listener (C). Also, try angling the speakers inwards towards the listener. A B C FAQ and Troubleshooting Playback and Streaming A=B=C Setting Up the LSX Optimal distance between the speakers and the listener will depend on the Master and Slave Speaker separation.
Using the LSX without a Wi-Fi network is not recommended and severely limits the usability of the speaker. In addition, you will miss out important updates including bug fixes and new features. To set up the speaker without a Wi-Fi network Table of Contents 9. How to setup the speaker without Wi-Fi network? FAQ and Troubleshooting To resume using the LSX with a Wi-Fi connection, reset the speaker to Setup Mode. Please refer to "Resetting to Factory Default" for factory reset into Setup Mode.
1. How can I turn on and turn off the speakers? You can either use the physical remote control or the KEF Control app to power the speakers ON or OFF. On the physical remote control press the power button once to toggle between ON and OFF. Table of Contents 12.2 Operation Note: Direct playback from Spotify Connect can also wake up the speaker. 2. How can I change input sources? You can either use the physical remote control or the KEF Control app to switch sources.
To turn on/off this feature you need to have the inter-speaker cable connected between the Master and Slave Speakers. If Cable Mode is enabled without the inter-speaker cable being connected, the LEDs on the Master and Slave Speakers will alternate between light blue and yellow. This indicates that the speakers cannot find each other. If Cable Mode is disabled while the inter-speaker cable is not connected, the Slave Speaker will not receive the signal to switch back to Wireless Pairing Mode.
MP3 WMA LPCM FLAC Ogg Vorbis AIFF AAC ALAC Stream type MPEG-1/2 Layer-III WMA asf, wma 2/7/8/9/10 wav LPCM flac FLAC mp3 ogg Ogg aiff or aif AIFF MPEG-4 m4a AAC aac MPEG-4 HE 3gp AAC 3g2 (AAC Plus v1/2) m4a ALAC Sample frequency (KHz) Audio word size (bits) Audio channel Bit rate (kbps) VBR/CBR 8–48 16 2 8–320 Supported 8–48 16 2 5–320 Supported 8–192 8–192 16, 24 16, 24 2 2 – – – – 8–192 16, 24 2 16–128 Supported 32–192 16, 24 2 – – 32–96 16 2 16–320 Supported 32–
Spotify Connect allows you to stream music directly from Spotify app. 1. Connect your speaker to your Wi-Fi network. 2. Open up the Spotify app on your phone, tablet or laptop whilst connected to the same Wi-Fi network. 3. Play a song and select Devices Available. Table of Contents 15. How do I stream music using Spotify Connect? For more information on how to use Spotify connect and country compatibility, please look at the following webpage (http://www.spotify.com/connect). 16.
1. How do I clean the speaker cone? Regular cleaning is important in order to keep the driver free from dirt and ensure optimal acoustic performance. Use an anti–static cleaner to clean the Uni-Q driver carefully with a soft sponge. 2. How do I clean the fabric areas of the LSX? Table of Contents 12.4 Maintenance Regular cleaning is important in order to keep the fabric looking its best and to prolong its life. Vacuum frequently, ideally every week. May also be vacuum cleaned with a soft brush.
1. I have a feature request, where can I submit a request? Please send your requests to dev@kef.com. 12.6 Troubleshooting 1. The LED on the Slave speaker doesn't show up. Is there something wrong? Table of Contents 12.5 Comments and Requests 2. Close down the app completely. 3. Unplug the power cable from the Master Speaker. 4. Wait approximately 60 seconds. 5. Reinsert the power cable. 6. The Master Speaker LED should be alternating between white and orange.
The app checks with the speaker which Wi-Fi networks are visible. If the speaker can't see your network, move the Master speaker closer to the router. If the problem persists, connect a LAN cable directly from the Master Speaker to the router. If the app still can't see your Wi-Fi network during setup, please send a log from inside the KEF Control app (Settings > Send Logs & Feedback) or contact support@kef.com. Table of Contents 3.
1. Please make sure that the power cable is plugged in securely both to the speaker and the AC socket. When it is correctly plugged in, the LED on the Master Speaker should light up. 2. Please make sure the volume is not muted (the source LED will be blinking). 3. Try adjusting the volume on the KEF Control app or physical remote control. Table of Contents 6. There is no sound from either speaker. 1. Please make sure that the power cable is plugged in securely both to the speaker and the AC socket.
There is a 40 millisecond delay in audio when the speaker is paired wirelessly. This is to make sure the audio between the Master and Right Speakers is synchronised. There are some TV or video player apps (e.g VLC) that can compensate for this audio delay. Alternatively, you can use Cable Mode by plugging in the inter-speaker cable to the Master and Slave Speakers. Enable Cable Mode inside the KEF Control app: Settings > Enable Cable Mode. Table of Contents 10.
Flashing white and orange LSX is ready to connect to a Wi-Fi network. Launch the KEF Control app to set up the speakers. Master Flashing orange slowly The speakers are in Standby Mode and trying to connect to a Wi-Fi network. Master Solid orange The speakers are in Standby Mode and connected to the Wi-Fi network. The speakers are unable to connect to a Wi-Fi network. • Make sure your router is turned on. Master Flashing orange quickly • Move the Master Speaker closer to the router.
Status Master Flashing blue The speakers are muted in Bluetooth mode. Master Flashing purple The speakers are muted in Optical Mode. Master Flashing yellow The speakers are muted in AUX Mode. Table of Contents Speaker Pattern 1. Make sure Cable Mode is disabled on the KEF Control app (Settings > Cable Mode). 2. On the Slave Speaker, press the (M) M/S Pairing button once. The Slave Speaker will search for the Master Speaker for reconnection.
The firmware update process failed. 1. Unplug the power cables from both speakers. 2. Wait approximately 60 seconds. Master and Slave Flashing red slowly 3. Plug the power cables back to both speakers. Table of Contents Status 4. Perform the firmware update again on the KEF Control app. If the problem persists, please send a log from the KEF Control app (Settings > Send Logs & Feedback) or contact support@kef.com. System error. 1. Pull the power cables from both speakers.
LSX Type Wireless speaker Drive units Uni-Q driver array: HF: 19 mm (0.75 in.) aluminium dome LF/MF: 115 mm (4.5 in.
Bluetooth range 10 m Not applicable Bluetooth memory 8 devices Not applicable Bluetooth frequency 2.402 GHz–2.48 GHz Not applicable Bluetooth power 2.5 mW (Bluetooth Class 2 Device) Not applicable Weight 3.6 kg (7.9 lbs) 3.5 kg (7.7 lbs) Wireless performance depends on many factors, including network traffic, distance from access point, room materials and construction, interference and other adverse conditions. For further information and troubleshooting, please visit the KEF website: KEF.
Disposal 14.1 Disposing of the Packaging Sort the packaging before you dispose of it. Dispose of paperboard and cardboard with the recycled paper service and wrappings with the appropriate collection service. Table of Contents 14. 14.2 Disposing of the Speakers 14.
The exclamation mark within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. 15.1.2 Regional Symbols Europe and North America This marking indicates that this product should not be disposed with other household wastes throughout the EU.
The Korean Certification mark indicates that the product complies with Korea’s product safety requirements for electrical and electronic equipment. The China Compulsory Certificate mark indicates that the product meets the safety requirements of the Chinese national standards (Guobiao). The product is only suitable for use in areas under 2,000 m above sea level (China).
https://www.intrinsicdev.co.uk/downloads/kef_ls50w_c4/ Crestron https://www.intrinsicdev.co.uk/downloads/kef-ls50w-for-crestron/ Elan https://www.intrinsicdev.co.uk/downloads/kef_ls50w_elan/ RTi https://www.intrinsicdev.co.uk/downloads/kef-ls50w-for-rti/ For support and information on the above drivers, please contact our development partner Intrinsic(DEV) directly: https://www.intrinsicdev.co.uk/ Savant: Drivers for the Savant platform are embedded and downloaded as part of the Savant software suite.
Factory Code: 0x01 Functions Function codes 1 Power On/Off Toggle 0x40 2 Mute/ Unmute Toggle 0x20 3 Play/Pause 0x18 4 Next 0x52 5 Source toggle 0x58 6 Volume Up 0x60 7 Volume Down 0xA0 8 Previous 0xD2 9 Power ON 0x38 10 Power OFF 0x3A 11 Mute 0x48 12 Un-Mute 0x4A 13 Source: Wi-Fi 0x30 14 Source: Bluetooth 0x2A 15 Bluetooth Pairing 0x98 16 Source: AUX 0x02 17 Source: Optical 0x0A 18 Source: USB 0x1A 19 Preset Volume (30%) 0x78 76 Setting Up the LS
Contact KEF Country UK Germany Austria Belgium Bulgaria Croatia Cyprus Czech Republic Denmark Finland France Greece Italy Netherlands Portugal Russia Switzerland Sweden Ukraine USA Canada Customer Support Number +44 1622 672 261 0201-17039-0 0201-17039-1 +32(0)2/468 30 33 +359 298 67 329 +385 (1) 383 28 14 +357 2275 7738 +420 272 658 390 +45 86 21 66 18 +358(0)40 561 4597 +33 2 47 80 48 61 +30 210 6741363 +39.049.
LSX Owner’s Manual This manual explains setup, preparation and operation of the LSX Music System EN
Contents Section 1 – Introduction About This Manual Accessories Features (5) Section 2 – First Time Setup Opening the Box Unpacking the Product Remote Control (7) Section 6 – KEF Stream App Pg 4 Pg 6 Section 5 – KEF Control App KEF Control app Cable Mode (12) Inverse L/R Speaker (12) Standby Mode (12) Volume Settings (13) Volume Control Sensitivity (13) Volume Limitation (13) Speaker Information (13) Send Logs & Information (13) Pg 15 Section 8 – Bluetooth Pg 16 Section 9 – TOSLINK & Optical Pg 17
Section 15 – Apple Airplay2 Pg 23 Appendices Pg 23 A. B. C. D. E.
1– Introduction About This Manual • • • Accessories Illustrations of English language menu screens, options, accessories and instructions are used This manual is specific to features available in the United States and Canada o Options and features in other regions may vary Due to product improvements, specifications and appearance are subject to change without notice The following items are included with your LSX Wireless Music System: Remote Control (1) Icons and their meanings Cat6 Ethernet Cable (1
Features Here’s what you can do with your new LSX Wireless Music System! Your new LSX Wireless Music System has been designed to give you the ultimate audio experience in a simple to setup and operate package.
2 – First Time Setup Opening the Box & Unpacking the Speakers INDICATOR OPENING THE BOX AND REMOVING THE SPEAKERS While waiting to on-board, the Master speaker indicator will slowly alternate between amber and white. After unsealing the packing material, carefully lift your speakers out of the box. Lift the speakers from the side only! Lifting or handling the speakers from the front may cause damage to the Uni-Q drivers.
• • REMOTE CONTROL The LSX will now reboot. The app will indicate when the speakers have rebooted and when they have connected to your network. Once connection is successfully completed, the app will advance to the next screen. Press LET’S START. The included Remote Control performs the following functions: • Power On/Off • Input Select • Volume +/• Mute • Pause/Play • Skip Track INDICATOR The indicator on the Master speaker will now be lit solid white, indicating your speakers are in Wi-Fi mode.
3 – Controls & Connections • BT PAIRING Press when pairing LSX to a Bluetooth device. • M/S PAIRING Use in conjunction with the corresponding button on a slave speaker to facilitate master/slave pairing. Can be used in the event pairing fails, or if the user decides to use a different LSX slave speaker. • RESET Performs LSX system factory reset, including clearing of network information. The reset button is below the arrow, the reset indicator above it.
Slave Speaker The LSX slave speaker contains the slave M/S PAIRING button, the interspeaker cable connection for CABLE MODE, and the AC power cable connector. In normal operation, the indicator on the front panel of the Slave speaker will not be lit. 4 – Audio Specifications THE UNI-Q LSX features the patented Uni-Q driver for crystal clear audio reproduction no matter where you are situated. The new 4” Uni-Q driver array is the same signature KEF technology used throughout KEF’s speaker line.
AMPLIFIERS WAYS TO CONNECT LSX contains four amplifiers, 2 in each cabinet, in a Dual-Mono BiAmp configuration. LSX easily connects to your music players, storage devices and streaming platforms. For complete information on each connection method please consult the corresponding section for each. One 70W Class D amplifier in each cabinet powers the bass and mid-range frequencies.
5 – KEF Control App KEF Control App KEF CONTROL APP Settings Menu Update Alert Speaker Select The KEF Control App acts as a remote control for your LSX. The Control App also serves to maintain network communications between LSX and your local network.
KEF Control App KEF Control App Settings Menu: Access Cable Mode, Inverse L/R Speakers, adjust Standby Mode, Volume Settings, Speaker Info, Firmware Update information. CABLE MODE With the proprietary on-board 2.4GhZ network the left and right channels are not tethered by a cable for 48kHz/24-bit streaming. For high-resolution 96kHz/24-bit resolution streaming, switch CABLE MODE on and attach the Cat6 interspeaker cable included in the LSX accessories pack.
• KEF Control App VOLUME SETTINGS HARDWARE VOLUME BUTTONS Occasionally you may encounter a situation where the setting for the number of volume steps between the KEF Control app and the streaming service you are using are different. This may cause the volume to jump unexpectedly while adjusting the volume using the hardware volume controls (device rocker switches). Forget Speaker: Select this when resetting your speaker or if you need to re-onboard your LSX.
6 – KEF Stream App KEF Stream App MEDIA SERVERS MEDIA SERVERS The KEF Stream App controls streaming from your device, server or other network-enabled storage devices. Directly access and play your tracks from your network connected storage devices. These devices may include a Network Attached Storage device (NAS Server), a connected PC or other storage device that resides on the same network as your LSX.
MINIMUM ROUTER REQUIREMENTS 7 – Wi-Fi Operation • • • For optimal performance it’s important that your wireless network be as fast and free of interference as possible. Streaming operation and app function are affected by slow network speeds, overcrowding and other network interference issues. 802.11n Compatible Simultaneous 2.4GHz/5GHz dual-band operation Minimum 54Mbps 5GHz transmission speed ROUTER REQUIREMENTS There are two router bands available on most current network equipment – 2.4GHz and 5GHz.
MU-MIMO Multi-user - multiple input/multiple output. MIMO is a wireless communication technology that allows a set of users or wireless terminals, each with one or more antennas, to communicate with each other on a network. 8 – Bluetooth INDICATOR Network Tips LSX features Qualcomm’s aptX codec for near-CD quality wireless streaming from an aptX compatible device. If the source device is not aptX compatible the higher compression of Bluetooth 4.0 will be transmitted and decoded.
9 – Optical 10 – AUX & Analog Inputs INDICATOR INDICATOR Select the OPT input from the KEF Connect app homepage. Select the AUX input from the KEF Connect app homepage. LSX supports connection to 96kHz/24-bit digital sources. Optical digital sources include televisions, DVD players, CD players, etc. Connection is made via a standard TOSLINK cable (not included). LSX supports standard 3.5mm stereo input jacks for connection to your analog devices (turntables, tape decks, Smartphone headphone outputs).
11 – Digital Signal Processor DSP Sound Profiles LSX is tuned at the factory for audiophile-quality reproduction right out of the box. You can enjoy incredible sound without making any adjustments to the DSP. LSX is a digital music system utilizing a Digital Signal Processor (DSP) to prepare either a digital or analog audio input for playback.
BASIC SOUND SETTINGS EXPERT SOUND SETTINGS For detailed explanations on the individual setting adjustments, please consult the EXPERT SOUND SETTINGS section. Desk Mode A horizontal surface in front of a speaker can act as an additional front baffle altering the frequency response of the speaker. The Desk Mode adjustment attenuates frequencies centered at approximately 180Hz (50Hz to 500Hz) in ½ dB steps to compensate for reflections when the speakers are set on a table or desktop.
Sub gain Allows you to control the subwoofer volume from the KEF Control App. Subwoofer and Bass Settings Phase Correction Please refer to the MUSIC INTEGRITY ENGINE™ section for more information on this option. For best results, turn the volume control on the subwoofer past the highest position you would be likely to use. This will allow you to control the volume of the subwoofer from the KEF Control App. Bass Extension Less Attenuates bass response.
12 – TIDAL 13 – Spotify Connect About TIDAL Indicator TIDAL is a subscription-based music, podcast and video streaming service that offers access to over 60 million music tracks and 240,000 videos. TIDAL features lossless audio, exclusive content and special features. About Spotify Connect TIDAL is accessed via the KEF Stream App main page. Available with a Spotify Premium subscription for streaming CD quality music via Wi-Fi to LSX.
14 – Roon Spotify Connect From a Desktop Device About Roon Spotify Connect can also be accessed from your desktop PC. Simply select the LSX from the Devices Available menu. Roon is a powerful application that uses the computing power in your desktop device to stream high-resolution files up to 192kHz/24-bit resolution (96kHz/24bit with LSX), while using the power of the Internet to compile photographs, biographical material, reviews and the latest news from the artists you are listening to.
15 – Apple AirPlay 2 16 – Subwoofer Operation ABOUT AIRPLAY 2 EXTERNAL SUBWOOFER CONNECTION Apple AirPlay 2 allows multi-room streaming from your Apple device (iPhone, iPad, HomePod, etc.). Connect an external subwoofer (such as KEF Kube) to LSX via a simple RCA-type pin jack located on the rear of the Master speaker. To stream music via AirPlay2, simply connect LSX to the same network as your sending device. From the Music app on your Apple device, choose LSX.
17 – Updating the Firmware HOW TO UPDATE THE FIRMWARE LSX features Over-the-Air firmware update capabilities, meaning that once LSX is connected to a network, you do not need to connect a cable from your host device (desktop, etc.) to update the firmware. The KEF Control App will automatically alert you to available firmware updates. It is recommended that you update the firmware as soon as possible after your new outof-the-box LSX has been successfully on-boarded and is up and running.
3. DO NOT unplug or turn off your LSX during the update! 4. Depending on network environment and the size of the update, the update may take up to 20 minutes to complete. INDICATORS During the update operation the LSX indicators will alternate sequentially. The update will not be affected by an incoming phone call or text during the operation. Avoid allowing your device to enter sleep mode during the update operation.
4. After the firmware has been successfully updated, LSX will reboot to allow the update to take effect. 4. After the update is complete and the speakers have been rebooted the operation is complete. If for any reason, the update fails at any point during the procedure, please send a log to our Development and Support team.
Do not scrub the fabric as this may damage the fabric or result in loss of color. 18 – Care & Cleaning LSX comes in five designer versions – Modern Lifestyle White, Red Contemporary, MYS Olive Green, Blue Contemporary and Classic Audiophile Black. Do not use detergents, cleaning agents, or cloth intended for hard surfaces. The Modern Lifestyle White comes in a gloss lacquered version; the other versions feature a Kvadrat fabric wrap.
5. The Master speaker indicator should be alternating orange/white, indicating LSX is in setup mode 6. It may take up to 1 minute for LSX to become discoverable 7. Enter the KEF Control app and select Setup New Speaker and follow the on-screen instructions 20 – Troubleshooting Guide LSX has been designed and tested for years of troublefree operation, but occasionally problems may occur. Most likely the cause of the trouble can be easily identified and solved.
4. When connected to a television, I only get a highpitched squeal from my speakers. LSX is a two-channel stereo system and cannot decode streaming service or video programs are encoded in Dolby™ or DTS™. Switch the output of your service or television to PCM. Alternating Blue/White. Bluetooth Pairing mode. Alternating Yellow/Cyan. MASTER SPEAKER INDICATOR ALARMS AND CODES Error. Indicates the Slave speaker is not connected or has not been found.
REPORTING ISSUES Slave Speaker Indicator Alarms and Codes Alternating Blue/Magenta/Yellow/White Firmware update mode. Red. Blinking. Firmware Upgrade Failed. Restart procedure. If problem persists contact Customer Service. Alternating Blue/White. Bluetooth Pairing mode. Alternating Yellow/Cyan. Networked products are complicated and often issues may appear to be related to the LSX system while they are results of network problems. Error. Slave speaker not connected to Master speaker.
Appendices APPENDIX A – DIGITAL MUSIC RESOLUTION APPENDIX B – TCP/IP CONTROL DRIVERS LSX can be integrated into the following Home Automation platforms: High Resolution High-Resolution Audio is sampled at 96kHz/24-bit and above. Resolutions up to 192kHz/24-bit are the current standard for consideration as high-resolution. Control 4, RTi, Crestron, Elan Drivers are available as direct downloads from Intrinsic (Dev) https://www.intrinsicdev.co.
APPENDIX C – IR UNIVERSAL REMOTE CODES LSX can be connected to your Universal Remote Control via the following codes. Codes are also published to the major US manufacturers and can be found in each corresponding database.
APPENDIX D – SYSTEM BLOCK DIAGRAM
APPENDIX E – SYSTEM SPECIFICATIONS 34
Trademarks Android™ is a registered trademark of Google LLC The Spotify logo and Spotify Connect are trademarks of the Spotify Group and indicates this product contains licensed 3rd party software designed to operate with Spotify Connect. Registered trademark of Apple, Inc. Registered trademark of Roon Labs. Indicates this product is designed and licensed to operate with the Roon Labs software application. App Store is a service mark of Apple, Inc.
Main Sites KEF Global Site: www.KEF.com KEF US: www.us.KEF.com KEF Canada: www.ca.kef.com KEF Direct: www.kefdirect.com Product Support and Downloads http://us.kef.
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- Specifications Model Type Drive units Frequency Range (-6dB) Measured at 85dB/1m Frequency Response (±3dB) Measured at 85dB/1m Power Input Amplifier Output Power Max SPL Dimension (HWD) Resolution Master and Slave speaker Connection: Inputs Output Wi-Fi Network Standard Wi-Fi Network Frequency Band Bluetooth Range Bluetooth Memory Bluetooth Frequency Bluetooth Power Weight ENG LSX Wireless speaker Uni-Q driver array: HF: 19mm (0.75in.) aluminium dome LF/MF: 115mm (4.5in.
SOUND BY KEF, MAIDSTONE, U.K. GP Acoustics (UK) Limited Eccleston Road, Tovil, Maidstone Kent, ME15 6QP UK CE - )r CiPlay The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. Other trademarks and trade names are those of their respective owners. 0 Bluetooth" Qualcomm aptX is a product of Qualcomm Technologies International, Ltd. Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries, used with permission.
_approbation_06-20180711.indd 10 Issue 1: 07.2018 P/N: KEF.
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Normal cleaning Regular cleaning is important in order to keep the fabric looking its best and to prolong its life. Vacuum frequently, ideally every week. May also be vacuum cleaned with a soft brush. Stain removal Scrape off any liquids or hardened residues with a spoon or a scoop. Any loose particles must be vacuum cleaned before further cleaning. Liquids must be soaked up with an absorbent napkin or cloth.
KEF SPEAKERS IMPORTANT SAFETY INFORMATION KEF
English Thank you for choosing KEF. KEF is dedicated to producing premium audio products with best-inclass sound quality to give you an engrossing and pleasurable listening experience that is true to the original performance. Please read the important safety and warranty information below. For any other services, please contact your local authorised KEF distributor. whose details can be found at www.kef.
Explanation of Graphical Symbols The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the products enclosure that may be of a sufficient magnitude to constitute a risk of electrical shock to persons.
The device for operation in the band 5150-5250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems. For devices with detachable antenna(s), the maximum antenna gain permitted for devices in the band 5725-5850 MHz shall be such that the equipment still complies with the e.i.r.p. limits specified for point-to-point and non-point-to-point operation as appropriate.
12. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. (I 13. The main plugs or the appliance coupler shall be readily accessible to completely disconnect the apparatus from power. 14. Only use attachments/accessories specified by the manufacturer. 15. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer or sold with the apparatus.
2018.08.
SOUND BY KEF, MAIDSTONE, U.K GP Acoustics (UK) Limited Eccleston Road, Tovil, Maidstone Kent MEI 5 6QP UK CE: )'( - KEF Wireles.s Safety_II Issue I: 07.
KEF SPEAKERS WARRANTY INFORMATION KEF
Limited Warranty Thank you for choosing KEF. KEF is dedicated to producing premium audio products with best-in-class sound quality to give you an engrossing and pleasurable listening experience that is true to the original performance. For KEF latest news and product information please visit www.kef.com KEF products purchased from an authorised KEF retailer are covered by a warranty. GP Acoustics (UK) Limited and KEF's authorised distributors provide warranty with a valid proof of purchase.
SOUND BY KEF, MAIDSTONE, U.K GP Acoustics (UK) Limited Eccleston Road, Tovil, Maidstone Kent ME 15 6QP UK CE - )t Issue I: 05.
