Article ID : 00413899 / Last Modified : 18/10/2026Print

    The network connection on my soundbar or home theater system is unstable

    For a stable connection, we recommend the following network setup for your soundbar or home theater system:

    1. Use a home network

    Networks used in offices, public facilities and other non-home locations often have security settings that can stop your soundbar or home theater system from connecting properly. Whenever possible, use a home internet connection.

    2. Use a fixed internet connection device (e.g., modem or router)

    Mobile routers and smartphone tethering can give an unstable connection depending on radio conditions. When using the soundbar or home theater system, we recommend using a fixed internet connection device.

    3. Don't exceed your router’s recommended number of connected devices

    Your router may have a recommended or maximum number of devices that can be connected at the same time. If you exceed this number, internet features may not work properly or your soundbar's connection to your smartphone may become unstable.

    Hints:

    • The recommended number of connected devices for a router can generally be found in the router’s user manual or on the manufacturer’s website. If you are unsure, contact the router manufacturer.
    • A fiber gateway supplied by your internet service provider (ISP) may support fewer connected devices than a high-performance router you can buy separately. If you use the soundbar or home theater system in an environment with many connected devices, consider disconnecting unnecessary devices, changing the router’s settings or replacing the router, or adding a commercial router.
      Example of adding a commercial router
      An illustration showing an example connection, with devices connected in order from left to right: A, B, C, D, E, F.
      • A: Optical outlet on the wall
      • B: Optical fiber cable
      • C: ISP-supplied fiber gateway
      • D: LAN cable
      • E: Commercial router
      • F: Soundbar or home theater system

      If you change router settings, add a router, or replace a router, the right method depends on the network configuration. If too many connected devices overload the provider-supplied router and make the internet connection unstable, setting the commercial router (E in the figure) to router mode may help. For more information, contact your ISP or the router manufacturer.

    4. Update the firmware of your internet connection device (e.g., modem or router)

    Update the firmware on your modem or router to the latest version. This may improve connection stability. See your modem or router's user manual for how to check for and install updates.

    5. Restart your internet connection device

    A temporary error on your modem or router can affect the connection, and restarting it may improve connection stability. See your modem or router's user manual for how to restart it.

    6. Check the settings related to multicast communication

    Depending on the router settings, communication required between the soundbar or home theater system and the smartphone may be restricted.

    The soundbar or home theater system uses multicast communication with devices on the network. On some Wi-Fi routers, this communication may be restricted by functions that control multicast communication within the network. The setting names vary by router model, but may appear under names such as:

    • Multicast control
    • IGMP snooping
    • IPTV settings

    Disabling multicast communication restrictions in these settings may resolve the issue. For details, refer to the router’s user manual or the manufacturer’s website.

    Note: Changing router settings may affect communication for other devices and services. Before you make any changes, write down your current settings. If you're unsure, contact the router manufacturer or your ISP.

    7. For wired LAN connections: Check the LAN cable

    Reconnect the LAN cable, try a different port on the router, or try a different cable.

    8. For wireless LAN connections: Check your Wi-Fi environment

    Refer to this article: The soundbar or home theater system cannot connect to a wireless LAN (Wi-Fi) network