LG Sound Sync Optical is a wireless audio technology developed by LG Electronics that allows users to connect their LG TV to a compatible soundbar or home theater system wirelessly using an optical cable. This technology eliminates the need for cluttered cables and provides a more streamlined and convenient way to enjoy high-quality audio.. To answer your main question, sound sync works fine, although im using an optical cable but ive tried sound sync and it works perfectly, sounds exactly the same as it does using a cable so no worries there. The only wire you will have is a power cable coming from the soundbar, thats it.. LG SJ6 4.1 Wireless Sound Bar 320W, and 4.1, the SJ5.

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www.lg.com Model : LAS650M (HS6) SMART Hi-Fi AUDIO Wireless Multi-room Sound Bar b Set up the sound output of your TV : TV setting menu [ [Sound] [ [TV Sound output] [ [LG Sound Sync (Optical)] Optical operation LG Sound Sync a Optical HDMI ARC (Audio Return Channel) operation a b Set up the sound output of your TV : 1.. You can connect an external sound system to your LG TV using an optical cable connection. You only need to change the Sound Out setting of the TV to Optical Out Device. Try This. Change the TV's Sound Out setting to Optical. 2020 WebOS5.0 or older: [All Settings] → [Sound] → [Sound Out] → [Optical].