Tv Audio Through The External Speakers; Hdmi (Arc) Connection - Samsung Smart TV E-Manual

TV Audio through the External Speakers

Your TV has a variety of connectors for audio input from devices such as Blu-ray players and DVD
players and for audio output to such devices as amplifiers. The connectors are listed below.
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ARC (Audio Return Channel)
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Digital Audio (Optical)
There are several issues to bear in mind when using audio input:
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For better audio quality, it is a good idea to use an AV receiver.
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The number of connectors and their names and locations may vary depending on the model.
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Refer to the external device's operating manual when connecting it to the TV. The number
of external device connectors and their names and locations may vary depending on the
manufacturer.

HDMI (ARC) Connection

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Some models may not support ARC.
Before connecting any external devices and cables to the TV, first verify the model number of the TV
you purchased. A sticker showing the model number is attached to the back of the TV. The connection
method varies depending on the model.
ARC (Audio Return Channel) enables digital sound output using just an HDMI cable. However, ARC is
only available through the HDMI (ARC) port and only when the TV is connected to an ARC-enabled AV
receiver.
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The number of connectors and their names and locations may vary depending on the model.
Connect an HDMI cable to the TV's HDMI (ARC) connector and the device's HDMI output connector.