Soundbar eARC Setup: Steps for Lossless Audio

Why eARC matters for a soundbar

To get lossless and object-based audio from a TV to a soundbar, connect with eARC and set the TV to bitstream or pass-through. The HDMI audio return channel is part of the HDMI standard managed by the HDMI Forum and licensed through HDMI Licensing Administrator. Industry standards groups such as CTA also help shape consumer electronics standards, so the labels you see on TV menus follow shared expectations.

The basic hookup is simple: run an HDMI cable from the TV eARC/ARC port to the soundbar eARC/ARC port. Then enable eARC in the TV settings, choose bitstream or pass-through, and play a known surround source. For a quick comparison of ARC and eARC capabilities, see HDMI ARC vs eARC.

Step 1: Check your TV and soundbar ports

Find the HDMI input on the TV labeled ARC or eARC. Some TVs mark it with the words HDMI ARC, eARC, or eARC/ARC. On the soundbar, the matching port is usually labeled ARC, eARC, HDMI Out, or TV. Connect only that port to the TV. The other HDMI ports on the soundbar are inputs for external players. The port arrangement is covered in soundbar HDMI connections.

Use an HDMI cable that is in good condition and no longer than necessary. If the soundbar came with an HDMI cable, that cable is often the simplest choice. If you are unsure whether a cable supports ARC, see soundbar HDMI ARC cable check.

Step 2: Connect the cable

Plug one end of the HDMI cable into the TV's ARC/eARC port and the other end into the soundbar's ARC/eARC port. Switch the soundbar input to ARC, TV, or eARC. Once the cable is active, HDMI CEC can let the TV remote control the soundbar volume and power. If the soundbar does not respond to the TV remote, see soundbar HDMI CEC.

Step 3: Enable eARC and HDMI CEC in the TV settings

Open the TV audio settings and enable the audio return channel. Menu names differ, but look for HDMI ARC, eARC, Audio Return Channel, or Digital Audio Out. Turn eARC to Auto or Enabled. Some TVs require HDMI CEC to be on before the return channel works, so check that setting as well.

For the digital audio output, choose Bitstream, Pass-through, or Auto. Avoid PCM if you want surround from the TV. PCM is useful for compatibility, but it often limits the signal to two channels or to the format the TV can decode rather than the soundbar. For more on the formats a TV can send, see soundbar TV audio output formats.

Step 4: Set the source to output bitstream or pass-through

After the TV is configured, set the source to pass the audio through. On a Blu-ray player, game console, or streaming box, choose Bitstream or Pass-through in the HDMI audio output menu. If the device is set to PCM, it may decode the audio before the TV sees it, which can prevent the soundbar from receiving a Dolby Atmos or DTS:X signal.

Inside a streaming app, select the surround or Atmos track when it is available. The TV then sends that bitstream over eARC to the soundbar. For a broader list of codecs and how they travel over HDMI, see soundbar audio formats.

Step 5: Confirm and troubleshoot

Play content with a known surround or object-based soundtrack and check the soundbar display or app for the format name. On the TV, also look at the info screen if it shows audio status. A successful eARC setup should show the correct multichannel format, not PCM.

Common issues and fixes:

• No sound: confirm the soundbar is on the ARC/eARC input and that HDMI CEC is enabled on the TV. See soundbar no sound troubleshooting.
• Stereo only: set the TV's Digital Audio Out to Bitstream or Pass-through and select the surround option inside the app or disc menu.
• Audio disconnects: update the TV and soundbar firmware, then reseat the HDMI cable. See soundbar firmware updates.
• Lip sync: use the TV's audio delay or lip sync setting to match the image. See soundbar lip sync adjust.

If your TV only has ARC or optical

If your TV has only ARC, you can still use the same HDMI connection, but the return channel is limited to compressed surround formats such as Dolby Digital Plus. Lossless formats such as Dolby TrueHD and DTS-HD Master Audio generally require eARC or a direct connection from the source to the soundbar. See HDMI ARC vs optical and soundbar wifi vs bluetooth for alternatives.

Bluetooth can stream audio from a phone or some TVs, and the Bluetooth Classic radio is widely used for wireless audio, but Bluetooth is not designed for the high-bandwidth object-based formats eARC can pass.

Keep the volume at a safe level

After lossless audio is working, keep listening levels sensible. The NIDCD notes that sounds at or below 70 A-weighted decibels are unlikely to cause hearing loss, and long or repeated exposure to sounds at or above 85 dBA can cause hearing loss. Start at a modest volume and adjust from there. For room and speaker placement, see soundbar room calibration.

What to pick for your setup

Questions

Do I need an eARC port to get Dolby Atmos?

Many streaming services send Dolby Atmos as Dolby Digital Plus, which can work over ARC. For lossless Dolby TrueHD or DTS-HD Master Audio, eARC is the more reliable path.

Why does my soundbar show PCM after setup?

PCM means the TV or source is decoding audio before sending it. Set the TV and source to Bitstream or Pass-through, and choose the surround audio track in the app or disc menu.

Can I use an optical cable instead of eARC?

Optical can carry stereo and compressed Dolby Digital, but it lacks the capacity for the high-bandwidth lossless formats eARC can pass. If HDMI is not available, optical is a workable fallback for basic surround.

Does eARC work with HDMI CEC disabled?

On many TVs, ARC and eARC require HDMI CEC to be enabled because the return channel is tied to CEC control. Turn on CEC and the audio return channel together.

What should I do if the soundbar has no sound?

Check the input selection, make sure the TV audio output is set to the external speakers or soundbar, enable eARC/ARC in the TV menu, and reseat the HDMI cable. Then test with a known surround source.