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The best way to connect an LG soundbar to your TV is usually with HDMI ARC or HDMI eARC. This gives the best combination of sound quality, simple control, and one-cable operation.
Recommended order:
Use this if your TV has an HDMI port labeled ARC or eARC, and your LG soundbar has a port labeled something like:
This is the preferred method because it can send audio from the TV to the soundbar and also allow the TV remote to control the soundbar volume.
Turn off the TV and soundbar.
Connect an HDMI cable from the TV’s HDMI ARC/eARC port to the soundbar’s HDMI OUT ARC/eARC port.
Turn on both devices.
On the soundbar, select the input:
On the TV, go to:
Settings > Sound > Sound Out
Then select:
Enable HDMI-CEC control:
If available, set the TV’s digital audio output to:
Avoid PCM if you want surround sound, because PCM may limit output to stereo on some TVs.
Use this if your TV or soundbar does not support HDMI ARC/eARC.
You need a TOSLINK optical cable.
Remove the small plastic caps from both ends of the optical cable.
Connect one end to the TV port labeled:
Connect the other end to the soundbar port labeled:
Set the soundbar input to:
On the TV, go to:
Settings > Sound > Sound Out
Then select:
Optical is reliable and sounds good, but it does not support the same high-bandwidth formats as HDMI eARC. It also usually does not allow full control through HDMI-CEC, though some TVs can be configured to control the soundbar volume using universal remote settings.
Bluetooth is convenient if you do not want cables, but it is generally not the best choice for home theater use because it can introduce audio delay and uses compressed audio.
Set the soundbar to BT or Bluetooth mode.
On the TV, open:
Settings > Sound > Sound Out
Choose:
Select your LG soundbar from the list.
Confirm pairing.
Bluetooth is acceptable for casual viewing, but for movies, gaming, and Dolby Atmos content, HDMI ARC/eARC is much better.
Some older TVs and soundbars may use:
This gives the lowest sound quality and usually only supports stereo audio.
For modern LG TVs and LG soundbars, HDMI eARC is the most capable connection. It supports higher-bandwidth audio formats than standard ARC, including formats used for Dolby Atmos and other advanced surround-sound systems, depending on the TV, soundbar, and source device.
In practical terms:
| Connection | Best for | Audio quality | TV remote volume control |
|---|---|---|---|
| HDMI eARC | Modern TVs, Dolby Atmos, best quality | Excellent | Usually yes |
| HDMI ARC | Most modern TVs and soundbars | Very good | Usually yes |
| Optical | Older TVs, reliable digital audio | Good | Sometimes limited |
| Bluetooth | Cable-free setup | Moderate | Usually yes, but with delay risk |
| AUX/RCA | Older devices | Basic stereo | Usually limited |
If your soundbar supports Dolby Atmos, DTS:X, or surround formats, use HDMI ARC/eARC whenever possible.
ARC means Audio Return Channel. It allows the TV to send sound “back” to the soundbar through the HDMI cable.
Without ARC, HDMI normally sends signals from a source device to a TV. With ARC, the TV can send audio from built-in apps, cable boxes, game consoles, and other HDMI inputs to the soundbar.
eARC means Enhanced Audio Return Channel. It is a newer version of ARC with more bandwidth. It is better for advanced audio formats such as lossless surround sound and some Dolby Atmos configurations.
Use the port specifically labeled:
Do not use a random HDMI port unless it is marked ARC/eARC. On the soundbar, use HDMI OUT to TV, not necessarily HDMI IN.
Use this configuration:
If you have devices such as:
Usually connect them to the TV’s HDMI inputs, then send audio from the TV to the soundbar over ARC/eARC.
For some high-end setups, especially with Dolby Atmos Blu-ray or gaming consoles, you may connect the device directly to the soundbar’s HDMI IN, then connect the soundbar’s HDMI OUT ARC/eARC to the TV. This depends on the soundbar model and whether it supports HDMI passthrough features such as 4K, HDR, VRR, or 120 Hz.
Check the following:
Try this:
Look for settings called:
Adjust the delay until speech matches the picture.
For gaming, HDMI ARC/eARC is usually preferable to Bluetooth because Bluetooth delay can be noticeable.
If using HDMI ARC/eARC:
If using optical:
For the best result, connect your LG soundbar to your TV using HDMI ARC or HDMI eARC:
TV HDMI ARC/eARC → Soundbar HDMI OUT ARC/eARC
Then set the TV sound output to HDMI ARC/eARC and enable SimpLink/CEC. If HDMI ARC/eARC is not available, use an optical cable. Bluetooth works, but it is less reliable for high-quality TV audio.
If you share your exact TV model and LG soundbar model, I can give you model-specific steps.
