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What you are referring to as "a gap between the lips of people on the television and the sound that comes out" is known as Lip Sync or Audio Delay. The most common cause of audio-sync problems is a connection to external devices. HDMI cables, in particular, can introduce delays due to the separate processing of audio and video signals. Check the cables from your TV to your sound system and make sure they are securely connected. Also, check to make sure the connection from any external sources (such as cable boxes and video game consoles) is also securely connected. The LG 2.0-Channel S20A Soundbar with Built-in Woofer, DTS Digital Surround, Bluetooth Connectivity - Black does not have a Lip Sync or Audio Delay setting, but your TV should have it in its settings menu. You can also check your cable set-top box, if you have cable service programming, or if your Blu-Ray Player, if you are using one, has this feature...^Ivan.
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