3. In the Box and Unpacking ....................................................................................................... 7
4. Setting Up LS50 Wireless II ...................................................................................................8
4.1 Selecting an Appropriate Router .......................................................................................................................8
4.2 Connecting to Power .................................................................................................................................................9
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
5. Connection and Control Interface .....................................................................................17
5.1 Front Panel .....................................................................................................................................................................17
5.2 Back Panel ...................................................................................................................................................................... 18
5.4 Top Panel ........................................................................................................................................................................ 21
5.5 Remote Control .........................................................................................................................................................22
6.1.1 Air Play 2 ..................................................................................................................................................................24
6.1. 5.1 Amazon Music .........................................................................................................................................30
6.1.5.6 Internet Radio .......................................................................................................................................... 31
7.3 R O O N..............................................................................................................................................................................35
2
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
10.2 Selecting TV Mode ...................................................................................................................................................40
14. Using KEF Connect App .......................................................................................................47
14.1 Home ................................................................................................................................................................................47
14.1.2 Editing the Home Screen (coming soon)...........................................................................................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 .1.4 S pot ify ........................................................................................................................................................... 53
14.3.1.6 Internet Radio ..........................................................................................................................................54
14. 3 .1. 7 Podc a s t .........................................................................................................................................................54
14.6 Choosing Your Speaker .........................................................................................................................................69
14.6.1 My Speaker and Speakers Nearby ......................................................................................................... 69
14.6.2 Speaker Info ........................................................................................................................................................70
14.7.1 Power Saver – Standby Mode .................................................................................................................. 71
14.7.2 Power Saver – Second Wake-Up Source ......................................................................................... 71
14.7.3 Do Not Disturb – Start Up Tone (coming soon) ........................................................................71
14.7.4 Do Not Disturb – Top Panel Lock ........................................................................................................72
14.7.5 Speaker System Options – Cable Mode ...........................................................................................72
14.7.6 Speaker System Options – Inverse L/R Speakers ........................................................................72
14. 8 Volum e .............................................................................................................................................................................73
14.8.1 Volume Display Set ting ................................................................................................................................. 73
14.8.4 Maximum Volume ............................................................................................................................................74
14.8.5 Balance Control ................................................................................................................................................. 74
14.11 Support ............................................................................................................................................................................79
15. Cleaning and Maintenance ................................................................................................... 80
16.1 Disposing of the Packaging .................................................................................................................................. 81
16.2 Disposing of the Speakers.................................................................................................................................... 81
16.3 Disposing of the Battery ....................................................................................................................................... 81
17. FAQ and Troubleshooting ................................................................................................... 82
17.2 Playback and Streaming .........................................................................................................................................84
17.4 LED Indicators .............................................................................................................................................................89
18.3 IR Command Codes ................................................................................................................................................97
4
1. Introduction
Thank you for choosing KEF wireless speaker system – LS50 Wireless II.
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 LS50 Wireless II, our compact, yet powerful speaker system for the digital music era.
The new KEF LS50 Wireless II is a fully active wireless stereo system that delivers
pristine, KEF sound coupled with instinctive usability and high-performance wireless
capability. Completely re-engineered and capable of playing any source seamlessly,
LS50 Wireless II is the only hi-fi system you will ever need, contained within two
perfectly proportioned, precision-made cabinets.
Please read and follow this user manual carefully before using the speaker system.
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2. General Information
2.1 Reading and Storing the User Manual
This user manual accompanies the LS50 Wireless 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 par ticularly 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.
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WARNING!
NOTICE!
This signal symbol/word designates a hazard with moderate
risk, which may result in death or severe injury if not avoided.
This signal word warns of possible damage to proper ty.
This signal word provides you with useful additional
information on handling and use.
6
3. In the Box and Unpacking
NOTICE!
Risk of damage!
Using a sharp knife or other pointed object to open the packaging may damage the
speakers.
•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).
×1 se t
×1×1×2×3
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1. Take the speakers and accessories out of the packaging.
2. Remove the red protective stickers and tabs on the speakers.
3. Check to make sure that all parts are included, namely:
•Power cable ×2 (length: 2 m, with country-specific power plugs)
•Printed materials: Quick Start Guide, Safety Information and Warranty Information
4. Check whether the speakers or individual parts are damaged. If this is the case, do
not use the speakers and contact your retailer.
7
4. Setting Up LS50 Wireless II
4.1 Selecting an Appropriate Router
The speakers must be “onboarded” to your personal Wi-Fi network (see chapter
“Onboarding”) for the best sound quality, comprehensive control and to enjoy music
streaming,
•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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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 Wi-Fi icon on the top panel 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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9
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 personal Wi-Fi network.
1. Search “KEF Connect” 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.
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*Requires iOS 13 or above.
**Requires Android 8 or above.
***The use of an Apple account is only available on iOS devices.
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4.3.2 Using iOS Devices
1. Make sure your mobile device is connected to the network you want to onboard
your speaker to.
2. Launch and login to the KEF Connect App on your mobile device.
3. Select “LS50 Wireless II” under “Speakers nearby”.
The speakers with the warning sign (
with this warning mark to get them “onboarded”.
) are not set up yet. Select the speakers
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The speakers with the check mark (
) are ready for use. This icon will show for
speakers already onboarded or directly connected to the network via a cable.
4. Select your local Wi-Fi network. Press “Next” to begin the onboarding process.
You may rename the speakers by tapping “Speaker name”.
5. The onboarding process will be done automatically. Tap “Done” when the process is
completed.
[Step 3–5]
•The Wi-Fi icon on the top panel of the Primary Speaker is solid white when
the speakers are successfully connected.
•After successful connection, you may be prompted if there is a new firmware
update available. Follow the instructions in the KEF Connect App to
complete the update process.
11
4.3.3 Using Android Devices with Google Play Service
1. Make sure your mobile device is connected to your local Wi-Fi network.
2. Launch and login to the KEF Connect App on your mobile device.
3. Allow the app to access your device’s location when requested.
4. Select “LS50 Wireless II” under “Speakers nearby”.
The speakers with the warning sign (
) are not set up yet.
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The speakers with the check mark (
) are ready for use.
5. Tap “Open Google Home” to proceed. If your mobile device does not have Google
Home, you will be prompted to download and install the app on your device.
[Step 3–5]
6. Tap “Set up LS50 Wireless II” at the top of the screen.
7. Tap “Add another home”.
8. Create a nickname for the home and then tap “Next”.
[Step 6–8]
Google Home will start to look for and connect to the speakers. Follow the
instructions on the screen to assign a use location (e.g home) and connect the
speakers to your local Wi-Fi network.
12
9. When the process is completed, tap “Continue”.
10. Go back to the KEF Connect App to start using the speakers.
•The Wi-Fi icon on the top panel of the Primary Speaker is solid white when
the speakers are successfully connected.
•After successful connection, you may be prompted if there is a new firmware
update available. Follow the instructions in the KEF Connect App to
complete the update process.
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13
4.3.4 Using Android Devices without Google Play Service
1. Make sure your mobile device is connected to your local Wi-Fi network.
2. Launch and login to the KEF Connect App on your mobile device.
3. Allow the app to access your device’s location when requested.
4. Tap “Choose a Wi-Fi network”.
5. Select your local Wi-Fi network and then tap “OK”.
[Step 3–5]
6. Input the password of your local Wi-Fi network and then tap “Next”. The
connection process will be done automatically.
7. If preferred, create a new name for the speakers and then tap “Next”. This name
will be used for Wi-Fi and Bluetooth connections.
8. Tap “Let’s start” to enjoy your speakers.
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[Step 6–8]
14
•The Wi-Fi icon on the top panel of the Primary Speaker is solid white when
the speakers are successfully connected.
•After successful connection, you may be prompted if there is a new firmware
update available. Follow the instructions in the KEF Connect App to
complete the update process.
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4.4 Speaker Placement and Connection
•The speakers should be placed on a flat and level surface that is free from vibration.
•The two speakers are distinguished between the Primary Speaker and the Secondary
Speaker. By default, the Primary Speaker is the right channel* and should be placed
on your right hand side as you face the speakers. For the best stereo experience,
soundstage and stable connection, place the speakers within 8 meters apar t.
*The left and right channels can be swapped through the KEF Connect App.
See chapter “Speaker System Options – Inverse L /R Speaker”.
•The optimum distance between the speakers and the listener will depend on how far
the Primary Speaker and the Secondary Speaker are separated, or vice versa. Try to
keep the same distance to the listener to form an equilateral triangle.
A
BC
A = B = C
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•The two speakers are already paired and will be automatically connected with each
other wirelessly (resolution: 96 kHz/24 bit). If you prefer a higher resolution
(192 kHz / 24 bit) or are experiencing frequent audio dropouts due to interference,
use the provided inter-speaker cable (length: 3 m) to link the two speakers
(see chapter “Back Panel”).
•If a longer inter-speaker cable is required, the K-Stream cable (6 m) is recommended.
Maximum Distance between the Two Speakers
Wireless ModeUp to 8 meters. Note that RF interference, including Wi-Fi
and Bluetooth, may reduce this distance.
Wired ModeUse the provided inter-speaker cable or connect with a
shielded Cat-6 Ethernet cable. The maximum cable length
is 10 meters.
16
5. Connection and Control Interface
5.1 Front Panel
Primary SpeakerSecondary Speaker
IR receiver
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17
5.2 Back Panel
Controls and connections are found on the back panel of each speaker, marked as shown.
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V TV portPlays audio input from a source (e.g. ARC/eARC port
of television) through an HDMI cable.
O Optical input jackPlays audio input from a source (e.g. Blu-ray player,
cable box) through an optical cable.
C Coaxial input jackPlays audio input from a source (e.g. audio player)
through a coaxial cable.
X Auxiliary input jackPlays audio input from a source (e.g. turntable with
phono stage) through a 3.5 mm audio cable.
R Factory reset buttonResets the speakers to the factory defaults (including
network settings and all EQ and system preferences).
Press and hold the button until the indicator light
above the button blinks.
P P/S pairing buttonRe-establishes the connection between the Primary
Speaker and the Secondary Speaker if the connection
is lost.
18
B Bluetooth pairing buttonEnables Bluetooth pairing. The speakers will be ready
to pair with a new device. Any Bluetooth connected
device will be disconnected.
T Primary/Secondary
connection port
Connects the Primary Speaker and Secondary
Speaker with the inter-speaker cable.
S Subwoofer output jackConnects a subwoofer to the speakers through an
RCA cable.
E Service portConnection port for service.
N Network portConnects the speakers to a router with a LAN cable.
A AC input connectorConnects the speakers to the power source with the
power cables.
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19
5.3 Bottom Panel
•Rubber feet are found on the bottom panel of each speaker to prevent slipping on a
hard surface.
•Additionally, four threaded holes (M8 × 1.5) are also available for mounting on a stand
(remove the rubber feet first before mounting). For the best sound performance and
cable management, use the KEF S2 speaker stands.
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WARNING!
Be aware of the potential hazards from tipping or knocking the speakers off the stands
which may result in personal injury, or proper ty damage.
20
5.4 Top Panel
Control buttons and mode indicators are found on the top panel of the Primar y
Speaker.
Mode indicator
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Wi-Fi
On/off
Bluetooth
Optical
TV
Mute
Volume downSource
Control button
21
Auxiliary
Coaxial
Volume up
5.5 Remote Control
On/off button
Previous source button
Volume down button
Previous button
•Insert two AAA batteries into the battery compartment before use. To do
so, slide open the battery compartment cover on the back and insert the
batteries into the compartment according to the polarity (+/–). Close the
battery compartment cover when done.
•Point the remote control to the IR receiver located on the front panel of
the Primary Speaker. Make sure there are no obstacles between the remote
control and the Primary Speaker during use.
•If the remote control is less responsive or not working, the battery power
may be low. Replace the batteries.
Mute button
Volume up button
Next source button
Play/pause button
Next button
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22
5.6 KEF Connect App
The KEF Connect App allows you to set up the speakers, apply sound settings, turn on/
off the speakers, switch sound sources, and access and play back your streaming music
and music stored in media server.
Latest news and stories from KEF
Turn on/off the speakers and switch sources
Shortcuts to music content (music streaming
services, Internet radio stations, podcasts and
media server*)
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*Coming soon
For details, see chapter “Using KEF Connect App”.
EQ settings
Speaker settings
Music content
Remote control
Home
23
6. Wi-Fi Streaming
6.1 Wireless Streaming Protocols
To stream audio to the speakers, your mobile device must be connected to
the same Wi-Fi network as the speakers. The speakers can be turned on from
standby mode through all wireless streaming protocols.
6.1.1 AirPlay 2
AirPlay 2 lets you share audio output from Apple devices to the speakers.
1. Star t music or video playback on your iOS device.
2. For music streaming, tap the AirPlay icon (
) in the playback screen.
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For audio streaming from the YouTube app, tap the connection icon (
playback screen and then tap the AirPlay icon ( ).
3. Select “KEF LS50 Wireless II” (or the name you have created for the speakers) from
the selection menu to start streaming.
The availability for streaming depends on the app compatibility.
24
) in the
6.1.2 Chromecast
If your device is Chromecast-enabled, you can stream audio output from the device to
the speakers.
1. Star t music or video playback on your Chromecast-enabled device.
2. In the Google Home App, tap “KEF LS50 Wireless II” (or the name you have created
for the speakers).
3. Tap “
Cast my audio”.
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The availability for streaming depends on the app compatibility.
25
6.1.3 ROON Ready (coming soon)
Roon is a high quality music management system that pulls together music from a NAS
drive, 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
certified “Roon Ready”. For more information on Roon, visit roonlabs.com.
1. Enable the speakers in the Audio menu.
Note: KEF LS50 Wireless II will be Roon Ready soon.
2. To stream music, click the “Zone Picker” next to volume at the footer of Roon and
then select “KEF LS50 Wireless II” (or the name you have created for the speakers)
from the device list.
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3. The signal path can be found by clicking the little coloured light in the footer.
26
6.1.4 Music Streaming Apps Native Protocols
6.1.4.1 Spotify Connect
Spotify is a digital music and podcast streaming service that gives you access to millions
of songs and other content from ar tists all over the world. The speakers are ready for
Spotify Connect.
1. Browse and select music to play in the Spotify App.
2. Tap the device icon (
3. Select “KEF LS50 Wireless II” (or the name you have created for the speakers) from
the selection menu to start streaming.
[Step 1–3]
) at the bottom of the playback screen.
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6.1.4.2 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.
1. To stream music, launch the QQ Music App and enable QPlay in the settings.
2. Browse and play music.
3. Tap the QPlay icon (
4. Select “KEF LS50 Wireless II” (or the name you have created for the speakers) from
the device list to start streaming.
) on the playback screen.
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28
6.1.4.3 TIDAL Connect
TIDAL is a subscription-based music, podcast and video streaming service that
combines lossless audio and high-definition music videos with exclusive content and
special features on music. The speakers are ready for the TIDAL Connect feature for
music streaming.
1. To stream music, select the content you want to play in the TIDAL Connect App and
then select the connect icon (
2. Select “KEF LS50 Wireless II” (or the name you have created for the speakers) from
the list of nearby devices to pair with the Tidal Connect App to start streaming.
[Step 1–2]
) in the “Now Playing” screen.
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6.1.5 KEF Connect App Streaming
The KEF Connect App offers direct access to various music streaming services
for playback through the speakers. For details, see chapter
“Playing Music from Music Streaming Services”
6.1. 5.1 Amazon Music
Amazon Music is a music streaming platform and online music store operated by
Amazon. You can access your Amazon Music account through the KEF Connect App to
stream music to the speakers.
6.1. 5.2 Deezer
Deezer is an online music streaming service. It allows users to listen to music content
from a wide range of record labels on various devices online or offline. You can access
your Deezer account through the KEF Connect App to stream music to the speakers.
6.1. 5.3 Qobuz
Qobuz is a music streaming and downloading service offering hi-resolution streaming
to its subscribers. You can access your Qobuz account through the KEF Connect App
to stream music to the speakers.
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6.1. 5.4 Spotify
Through the KEF Connect App, you will be prompted to open the Spotify app on your
device in order to stream music to the speakers. See chapter “Spotify Connect”.
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