HDMI ARC or eARC is usually the best way to connect a soundbar to a TV when both devices have matching HDMI ports. It carries TV audio back to the soundbar and can let the TV remote control volume. If either device lacks ARC, an optical (Toslink) cable is often the simplest dependable alternative. Bluetooth, Wi-Fi, RCA, and AUX can work in specific setups, but they have different limits.

Before buying a cable or moving equipment, read the labels beside the ports on the back of both devices. The port labels—not the shape of the cable alone—determine which method is available.

HDMI cable connecting a TV to a soundbar, with an optical cable shown as an alternative.
HDMI ARC/eARC is normally the first connection to check. Optical is a useful alternative when both devices have matching optical ports.

Choose the right soundbar connection first

Connection Best when What to confirm
HDMI ARC/eARC You want audio from built-in TV apps and simpler TV-remote volume control. The TV has a port labeled ARC or eARC/ARC, and the soundbar has HDMI OUT labeled ARC/eARC.
Optical / Toslink Your TV or soundbar lacks ARC, or you want a straightforward digital-audio connection. The TV has Digital Audio Out (Optical) and the soundbar has Optical In.
Bluetooth Both models explicitly support TV-to-soundbar Bluetooth pairing. Expect model-specific pairing steps and possible audio delay.
Wi-Fi Your soundbar maker provides a supported app or ecosystem connection. Confirm the exact TV and soundbar models support the same method.
RCA or AUX Both devices provide compatible analog audio connections. Check the TV output and soundbar input labels; this is not a universal option.



Method 1: Connect the soundbar with HDMI ARC or eARC

Use this route when the TV has a single HDMI port marked ARC or eARC/ARC and the soundbar has an HDMI OUT port with the same marking. Do not use a random available HDMI input on the TV; ARC works only through the labeled return-audio port.

  1. Turn off the TV and soundbar before connecting the cable.
  2. Connect one end of a suitable HDMI cable to the TV’s HDMI port labeled ARC or eARC/ARC.
  3. Connect the other end to the soundbar’s HDMI OUT (ARC/eARC) port—not an HDMI input intended for a disc player or streaming device.
  4. Turn on the TV, then the soundbar.
  5. On the soundbar, choose the TV/HDMI/ARC input named by its manufacturer.
  6. In the TV sound menu, choose an external speaker, receiver, audio system, HDMI ARC, or similar option. Turn on the TV’s HDMI control feature if the manufacturer requires it.

ARC and eARC depend on both devices and the full HDMI connection path. Sony’s current guidance, for example, says both devices need compatible labeled ports and recommends confirming the TV speaker selection and HDMI-control setting. Read Sony’s ARC/eARC support guidance.

Affiliate disclosure: This article contains paid affiliate links. If you purchase through one of these links, All About Home Electronics may earn a commission at no additional cost to you.

If you need a replacement or known-good cable, explore this HDMI cable on Amazon (paid link). Match the cable to your equipment’s documented requirements—especially when eARC, 4K/HDR video passthrough, long cable runs, adapters, or extenders are involved.

For the complete ARC setup sequence, see How to Connect a Soundbar to a TV Using HDMI ARC. If the cable is connected but you still have no sound, use Soundbar HDMI ARC Not Working? 12 Safe Checks.



Method 2: Connect the soundbar with an optical cable

Optical is an audio-only digital connection. It is useful when the TV and soundbar both have matching optical ports, particularly on equipment that does not support ARC. Optical will not provide every ARC/eARC feature, such as HDMI-CEC volume control through the TV remote, and supported audio formats vary by model.

  1. Find Digital Audio Out (Optical) on the TV and Optical In on the soundbar.
  2. Remove any protective caps from the Toslink cable and align the keyed connector gently. Never force it.
  3. Connect TV OUT to soundbar IN.
  4. Choose Optical, D.IN, Digital In, or the equivalent input on the soundbar.
  5. In the TV sound menu, select Optical, Digital Audio Out, External Speaker, or the equivalent wording.

Need the illustrated steps and the no-sound checks? Read How to Connect a Soundbar to a TV With an Optical Cable. That page will be inserted in the same publishing pass as this guide.

Method 3: Bluetooth or Wi-Fi

Wireless setup is not universal. It works only when the particular TV and soundbar support the same connection method. Bluetooth can be convenient, but it may introduce lip-sync delay and can require re-pairing after a reset. Wi-Fi setup usually depends on the soundbar manufacturer’s app, supported model generation, and the home’s wireless network.

Use the TV and soundbar manuals to confirm the exact process. Do not assume that a soundbar which accepts Bluetooth from a phone can also receive TV audio over Bluetooth.

Method 4: RCA or AUX

Use an analog connection only when the TV provides an appropriate audio output and the soundbar provides the matching line-level input. A red-and-white RCA cable, a 3.5 mm cable, and an adapter are not interchangeable by default. Check the labels and the manuals before connecting anything. Never connect amplified speaker outputs to a soundbar’s line-level input.

Test the connection

  1. Play a program from a built-in TV app, live channel, or another known working source.
  2. Confirm the soundbar’s display or indicator shows the expected input.
  3. Raise volume with the soundbar remote first.
  4. If there is no sound, recheck the TV’s audio-output selection before changing more settings.
  5. For an optical setup with no sound, a temporary change to PCM can be a useful compatibility test; consult the TV and soundbar manuals for supported formats.

Common mistakes that prevent sound

  • Using a normal HDMI input instead of the TV’s ARC/eARC-labeled port.
  • Connecting TV optical IN to soundbar optical IN; the path must be TV OUT to soundbar IN.
  • Leaving the soundbar on Bluetooth, AUX, or another input after changing cables.
  • Leaving TV speakers selected in the TV sound menu.
  • Assuming every HDMI cable, adapter, or older device will handle every eARC or video-passthrough requirement.
  • Attempting a factory reset before confirming the port labels, input, and output settings.



Need more help?

If the basic connection choices are clear but your soundbar still will not work with your equipment, start with All About Home Electronics’ Soundbar & Audio Setup Help and select Soundbar. Use model-specific manufacturer support for firmware, reset, and compatibility instructions.

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