“This TV has an onboard subwoofer. Will the onboard sub work if the TV output is run through an external soundbar or only when output is through the TV speakers?”

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• The built-in subwoofer is designed to work with audio played through the internal TV speakers. Hope this helps! Thank you, TCL Customer Support

  Answered by TCLExpert 3 years ago

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• external no. you can use TV speakers with wired headphone and Bluetooth connected speakers.

  Answered by RonN 2 years ago

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