How to Set Up a Soundbar for TV? | Connect in 10 Minutes

The best way to set up a soundbar for TV is almost always a single HDMI cable. You connect the TV’s HDMI port labeled ARC or eARC to the soundbar’s port labeled HDMI OUT, TV-ARC, or eARC — then tell the TV to send sound to the soundbar instead of its built-in speakers. It takes about ten minutes and requires no tools beyond the HDMI cable.

This guide walks through the HDMI route first, covers the optical fallback for older TVs, and ends with the mistakes that trip people up most.

The HDMI ARC Setup That Works For Most TVs

If both your TV and soundbar were made in the last decade, they almost certainly support this method, and it is the one to use first. HDMI ARC (and its faster successor eARC) carries TV audio into the soundbar and lets the TV remote control the soundbar’s volume.

Here is the exact connection order:

1. Find the HDMI port on the TV labeled ARC or eARC — it is often the second or third port, and it must carry that label. A regular HDMI port will not pass ARC audio.
2. Find the matching port on the soundbar. It is labeled HDMI OUT, TV-ARC, or eARC/ARC. Plug one end of the HDMI cable here.
3. Plug the other end into the TV’s ARC-labeled port.
4. Power both devices on, then set the soundbar’s input to the HDMI/ARC source. On Samsung setups, this source is called D.IN.
5. On the TV, open Settings and change the audio output from TV Speaker to External Speakers or Audio System. On Samsung TVs with eARC, this lives under Settings > Sound > Expert Settings > HDMI-eARC Mode > Auto.

When it works, you will hear TV audio through the soundbar within a second or two of switching inputs. Sony’s setup documentation confirms this exact pairing: the TV’s HDMI IN labeled eARC/ARC connects to the soundbar’s HDMI OUT labeled eARC/ARC.

When To Use Optical Instead Of HDMI

Optical is the fallback when your TV has no HDMI port marked ARC or eARC — a common situation on TVs from the early 2010s and budget models. It delivers the same stereo and compressed surround audio, though it cannot carry the high-bandwidth formats that eARC handles.

The connection mirrors the HDMI setup:

1. Plug an optical cable into the TV’s OPTICAL OUT port and the soundbar’s OPTICAL IN port.
2. Set the soundbar’s input source to OPTICAL or D.IN, depending on the manufacturer’s labeling.
3. On the TV, open Settings > Sound and select External Speakers or Optical as the audio output.

Sony’s support pages note that if your TV has no ARC-labeled HDMI jack at all, the optical cable is required to get TV audio to the soundbar. Samsung’s instructions for optical setups say the same: TV OPTICAL OUT to soundbar DIGITAL AUDIO IN (OPTICAL), with the soundbar set to D.IN and the TV output switched away from its internal speakers.

Three Setup Mistakes That Silence Your Soundbar

Nearly every “no sound” complaint traces back to one of these three errors. Check them in this order before assuming the hardware is faulty.

1. The wrong HDMI port. The TV port must be labeled ARC or eARC. Plugging into a standard HDMI input — even the one with the cable box attached — will not carry audio back to the soundbar.
2. The wrong soundbar jack. On the soundbar side, the cable belongs in the port labeled HDMI OUT, TV OUT, or TV-ARC. Many soundbars also have HDMI inputs for game consoles or streamers; those will not work for TV audio.
3. The TV still on its own speakers. The TV keeps using its internal speakers until you change the audio output setting. This is the most common miss, and the fix is always in the TV’s Settings > Sound menu.

One setup variant worth knowing: you can route an external device through the soundbar instead of the TV. Connect the device (a streaming stick or game console) into the soundbar’s HDMI input, then connect the soundbar’s HDMI OUT to the TV’s ARC port. Samsung notes this arrangement works cleanly when you prefer the soundbar to be the hub.

Quick Port Reference

After the cable is connected and the settings are changed, run a quick test: play any video with dialog and confirm the sound comes from the soundbar. If it does not, recheck the TV’s audio output setting first — it resets to TV speakers on some models after a firmware update.

When you are ready to upgrade from an older or basic soundbar, our tested roundup of all-in-one soundbars compares the best current models that simplify this exact setup.