KEF 991LSX2LTG LSX II LT Powered Speakers User Guide

June 2, 2024
KEF

KEF 991LSX2LTG LSX II LT Powered Speakers

KEF-991LSX2LTG-LSX-II-LT-Powered-Speakers-PRODUCT

Specifications

  • Product: LSX II LT Wireless HiFi Speakers
  • Brand: KEF
  • Model: 114KEF
  • Country of Origin: United Kingdom

Product Information

The KEF LSX II LT Wireless HiFi Speakers deliver premium audio quality for an immersive listening experience. Designed to provide best-in-class sound reproduction, these speakers aim to preserve the original performance of the audio content.

For any further assistance or services related to the product,please reach out to your local authorized KEF distributor whose contact information can be found at www.kef.com.

Product Usage Instructions

Step 1: Placement

Ensure proper placement of the speakers in your listening environment. To switch between left and right channels, use the KEF Connect App.
You can adjust the L/R channel settings within the app for optimal sound distribution in your space.

Important Safety Information
To ensure safety while using the product, please adhere to the following guidelines:

  • Avoid exposing the speakers to rain or moisture to prevent the risk of fire or electrical shock.
  • Do not attempt to open the speakers as there are no user-serviceable parts inside. Refer servicing to qualified personnel.
  • Handle batteries with caution and keep them away from children. Seek medical attention if batteries are swallowed.
  • Observe all graphical symbols on the product for proper usage and safety precautions.

Explanation of Graphical Symbols
The graphical symbols on the product indicate important information:

  • The lightning flash symbol warns of dangerous voltage that may cause electrical shock.
  • The exclamation mark symbol provides essential operating and maintenance instructions.
  • Protective grounding is incorporated for safety measures, ensuring proper connection to facility grounding.

Frequently Asked Questions (FAQ)

Q: How do I connect the speakers to my audio source?
A: To connect the speakers wirelessly, use the KEF Connect App on your device and follow the pairing instructions.

Q: Can I use the speakers outdoors?
A: It is recommended to avoid exposing the speakers to rain or moisture, making them more suitable for indoor use.

Q: How do I optimize the sound quality of the speakers?
A: Adjust the speaker placement and channel settings in the KEF Connect App for the best sound experience.

Placement

KEF-991LSX2LTG-LSX-II-LT-Powered-Speakers-FIG- \(1\)

You can switch L/R channel in KEF Connect App.

Wi-Fi Set up

KEF-991LSX2LTG-LSX-II-LT-Powered-Speakers-FIG- \(2\)

App Download

KEF-991LSX2LTG-LSX-II-LT-Powered-Speakers-FIG- \(3\)

LED Indication

Use of the Works with Apple badge means that an accessory has been designed to work specifically with the technology identified in the badge and has been certified by the developer to meet Apple performance standards.
The LSX II LT is a premium speaker compatible with AirPlay. To use AirPlay with LSX II LT, the latest version of iOS, iPadOS, or macOS is recommended. Apple and AirPlay are trademarks of Apple Inc., registered in the U.S. and other countries and regions. The trademark ‘iPhone’ is used in Japan with a license from Aiphone K.K.
Google, Chromecast built-in and Google Play are trademarks of Google LLC.

The Spotify Software is subject to third party licenses found here: https://www.spotify.com/connect/third-party-licenses Use your phone, tablet or computer as a remote control for Spotify. Go to spotify.com/connect to learn how.
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.

For further information, please visit KEF.com
KEF reserves the right, in line with continuous research and development, to amend or change specifications without prior notice. E. & O.E.

Warranty Information

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.
This warranty is in addition to, and in no way detracts from,your statutory rights as a consumer under any applicable laws governing this warranty.

For full details please visit: www.kef.com/support or contact our Customer Service Department at +44 800 652 2696 (UK) (charges may apply from calls made outside of the UK), by email at support@kef.com or by post at GP Acoustics (UK) Limited, Eccleston Road,Tovil, Maidstone, Kent, ME15 6QP, UK for a full copy of the warranty.

GP Acoustics (UK) Limited
Eccleston Road,Tovil, Maidstone
Kent, ME15 6QP
UK +441622 672 261

This product’s packaging materials are recyclable to a certain extend. Please dispose of any materials in accordance with the local recycling regulations. When discarding the unit, comply with local rules or regulations.
Batteries (for applicable products) should never be thrown away or incinerated but disposed of in accordance with the local regulations concerning battery disposal.
The designated on-site facility is intended to ensure that all materials can be collected and recycled in an environmentally friendly and effective manner and that they can be recycled as best as possible, leaving as little unusable waste as possible.

Important Safety Information & Specifications

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.
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.com

IMPORTANT SAFETY INFORMATION

  • Follow this manual carefully for the best results from your speakers
  • Read and return the warranty card
  • Clean with a dry lint free cloth
  • Do not use spirit based cleaners
  • Avoid damp
  • Avoid temperature extremes
  • Avoid direct sunlight
  • SAFETY NOTICE! Trailing cables are dangerous, secure all cables

WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE

CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN

CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

  • A combined mains power input lead and country-specific mains plug is provided.
  • Check before connecting to your local mains supply that the local supply voltage is the same as that marked on the rear panel. If it is not, check with your supplier before proceeding.

CAUTION
Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type

WARNING
Keep new and used batteries away from children.
If the battery compartment does not close securely, stop using the product and keep it away from children.
If you think batteries might have been swallowed or placed inside any part of the body, seek immediate medical attention.

  • Battery shall not be exposed to excessive heat such as sunshine, fire or the like.
  • The appliance should be connected to a mains socket with a protective earthing connection.
  • Refer to the information on the underside of the enclosure for electrical an safety information before installing or operating the appliance.

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 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.

Correct Disposal of This Product. This marking indicates that this product should not be disposed with other household wastes throughout the EU. To prevent possible harm to the environment or human health from uncontrolled waste disposal, recycle it responsibly to promote the sustainable reuse of material resources. To return your used device, please use the return and collection systems or contact the retailer where the product was purchased. They can take this product for environmentally safe recycling.

Protective grounding means that the equipment adopts protective grounding as a safety measure. The protective grounding conductor of the equipment should be connected to the protective grounding conductor of the facility (for example, connecting the power supply cord to an output socket with a grounding connection).

The normal function of the product may be disturbed by Strong Electro Magnetic Interference. If so, simply reset the product to resume normal operation by following the instruction manual. In case the function could not resume, please use the product in other location.

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. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TY technician for help.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

  1. this device may not cause harmful interference, and
  2. this device must accept any interference received, including interference that may cause undesired operation.

FCC Radiation Exposure Statement
This device complies with FCC radiation exposure limits set forth for an uncontrolled environment and it also complies with Part 15 of the FCC RF Rules. This equipment must be installed and operated in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation instructions and consider removing the no-collocation statement.
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.

Caution!
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

IC Statement
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:

  1. This device may not cause interference.
  2. This device must accept any interference, including interference that may cause undesired operation of the device.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body.

Warning: 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.

IC Radiation Exposure Statement
This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body.

Product Type
Wireless Speaker

Radio Frequency – Frequency Range
Bluetooth: 2402-2480 MHz
Wi-Fi Network*: 2412-2472 MHz, 5180-5240 MHz, 5260-5320 MHz, 5500-5700 MHz, 5745-5825 MHz
DFS mode and available channels depend on various countries’ regulations

Radio Frequency – Power
Bluetooth: 10 dBm EIRP max.
Wi-Fi Network: 20 dBm EIRP max. (2.4 GHz), 18 dBm EIRP max. (5 GHz)

Note: The product follows the European Union Energy Legislation

  • The product consumes less than 2.0W in network standby mode.
  • The product can enter network standby mode from any working modes, including Wi-Fi, Bluetooth, TV (HDMI), Optical, USB and Aux modes.
  • This product can instantly enter ultra-low power consumption mode through the remote control, with a power consumption of 0.45 watts.
  • The product can be activated from network standby mode by app, remote control or Wi-Fi audio signal.
  • Wi-Fi mode can be deactivated by an active network cable connection

Important Safety Instructions

  1. Read these instructions.

  2. Keep these instructions – for future reference.

  3. Heed all warnings – on the product and in all product documentation.

  4. Follow all instructions.

  5. Do not use this apparatus near water.

  6. The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on the apparatus.

  7. Clean only with a dry cloth.

  8. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. To ensure reliable operation of the product and to protect it from overheating put the product in a position and location that will not interfere with its proper ventilation.

  9. Do not install near any heat sources, such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

  10. No naked flame sources, such as lighted candles, should be placed on the apparatus.

  11. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wider blade or third prong is provided for your safety. If the provided plug does not fit in your outlet, consult an electrician for replacement of the obsolete outlet.

  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.

  13. The mains plug or appliance coupler is used as disconnect device, the disconnect device shall remain readily operable. The main plugs or 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. When a cart is used, use caution when moving the cart/apparatus combination to avoidinjury from tip-over.

  16. Unplug this apparatus during lightning storms or when unused for long periods of time to prevent damage to this product.

  17. The maximum operating temperature is 45°C.

  18. Minimum 5cm distances around the apparatus for sufficient ventilation.

  19. The device can be used in all European countries.

  20. Only 2-pin EU and 3-pin UK will be used for Singapore market.

  21. Please insert two AAA batteries into the remote control. Make sure the(+) and(-) symbols on the batteries match the (+)and(-) symbols in the battery compartment. Then, reattach the battery cover.

    • Only use manufacturer-approved batteries. Replacing with the wrong battery type can compromise safety measures and pose risks of explosion, fire, etc.
    • Do not place the batteries in high-temperature environments, such as sunlight, fire, microwave ovens, ovens, etc., as this may lead to explosion or leakage of flammable liquids or gases.
    • Do not disassemble, impact, squeeze, or cut the batteries. Do not touch or pry the batteries with sharp objects or screwdrivers. These actions may result in explosion.
    • Do not expose the batteries to extremely low air pressure environments, as this may cause the batteries to explode or leak flammable liquids and gases.
    • Do not continue using the batteries if they are severely swollen.
    • Do not charge non-rechargeable batteries.
    • Do not mix new and old batteries or different battery models, especially do not mix alkaline batteries with rechargeable batteries.
    • Do not allow children to replace batteries without adult supervision. Small batteries such as AAA should be kept out of reach of children.
      Operating temperature: 0-45°C
      Storage and transportation temperature: -10-+50°C Operating altitude: s2000m (air pressure  79kPa)
  22. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way such as power-supply cord or plug is damaged; liquid has been spilled or objects have fallen into the apparatus; the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. Do not attempt to service this product yourself. Opening or removing covers may expose you to dangerous voltages or other hazards. Please call KEF to be referred to an authorized service center near you.

FCC Supplier’s Declaration of Conformity
Unique Identifier
LSX II LT
Supplier Information
GP Electronics (HK) Ltd.
9 /F, Building 12W, 12 Science Park West Avenue, Hong Kong Science Park,Pak Shek Kok, New Territories, Hong Kong
+852 2424 3521

U.S. Distributor Information
GP Acoustics (US), Inc.
10 Timber Lane, Marlboro, New Jersey US-07746, United States City, State: NJ +1 732 683 23 56

Specifications

  • Model LSX II LT

  • Drive units Uni-Q Driver Array:
    HF: 19 mm (0.75 in.) aluminium dome
    LF/MF: 115 mm (4.5 in.) magnesium/aluminium alloy cone

  • Frequency range (-6dB) measured at 85dB/1m 49 Hz – 47 kHz
    *Depends on EQ settings

  • Amplifier output power (per speaker) LF: 70W HF: 30W

  • Amplifier class speaker) LF: Class D HF: Class D

  • Max SPL measured at 1m 102 dB

  • Wireless streaming features
    AirPlay 2, Google Chromecast, UPnP Compatible, Bluetooth 5.0

  • Streaming services
    Spotify via Spotify Connect, Tidal via Tidal Connect, Amazon Music, Qobuz, Deezer,QQ Music via QPlay, Internet Radio, Podcast
    ‘Depends on services availability ind ifferent countries

  • Source resolution
    Network up to 384kHz/24bit
    Optical up to 96kHz/24bit
    USB Type C up to 96kHz/24bit
    HDMI up to 48kHz/16bit
    *Depends on source resolution

  • lnterspeaker connection
    Wired: all sources resampled to 96kHz/24bit PCM

  • Supported format (network) DSD, FLAC, WAV, AIFF, ALAC, AAC, WMA, MP3, M4A, LPCM and Ogg Vorbis

  • Dimensions (HWD per speaker) 240 x 155 x 180 mm (9.5 x 6.1 x 7.1 in.)

  • Weight (per set) 6.8 kg (15.0 lbs)

  • Power input   100 – 240VAC 50/60Hz

  • Power consumption 200W (operating power)
    <2.0W (standby power)
    Primary speaker                Secondary speaker

  • Inputs                           HDMIARC
    TOSLINK Optical
    USB Type C
    RJ45 Ethernet (network)
    USB Type C (interspeaker)

  • Output                        RCA Subwoofer output

  • Wi-Fi network standard   IEEE 802.11a/b/g/n/ac
    IPv4, IPv6

  • Wi-Fi network frequency band   Dual-band 2.4 GHz / 5 GHz

KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.

GP Acoustics (UK) Limited
Eccleston Road
Tovil, Maidstone
Kent, ME15 6QP
UK

LSX II LT – Environmental labelling of packaging

Paper Collection

PAP 20 / PAP 21| PAP22| PAP21

KEF-991LSX2LTG-LSX-II-LT-Powered-Speakers-FIG- \(9\)

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Early access to product news & events
Exclusive benefits
One myKEF account for everything

Since 1961 KEF’s mission has been to preserve the integrity of sound with as little intervention as possible;from treble to bass, and everything in between.
Experience is everything, and that’s no overstatement.
Combining our obsessions with acoustic authenticity and innovative engineering, we’d like to think that our products speak for themselves.
Listen and believe

References

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