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WIFI mode is so you can stream a music app like iHeart from your phone to the sound bar. You dont need an optical cable if you are using the HDMI connections.
Sorry, there was a problem. Please try again later.This sound bar has been designed to integrate with the SPK8-S optional wireless surround speakers (kit sold separately), adding the premium home theater audio of dedicated rear channels, with wireless convenience. You can play music, skip tracks, and adjust the volume on your Sound Bar with your voice. You just need another device with Google Assistant built-in – like the LG OLED TV with AI ThinQ and LG ThinQ Speaker. Please take a moment, at your convenience, to contact us directly via Twitter @LGUSSupport or Facebook https://www.facebook.com/LGUSA/ or you can give us a call at 800-243-0000. ^CP
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