A:Answer Hello! Thank you for your question. You can turn off the TV’s built‑in speakers on the Insignia 55" Class F50 Series LED 4K UHD Smart Fire TV by going into the audio settings. Just open Settings, select Display & Sounds, then choose Audio Output, and switch it to your sound bar (such as HDMI ARC or Optical). Once you select the external audio device, the TV automatically disables its internal speakers so all sound plays through the sound bar instead.
Darshan | Insignia