How to connect LG soundbar to TCL TV
Learning how to connect LG soundbar to TCL TV is mostly about choosing the right audio path and matching the settings on both devices.
The best method depends on whether your TCL TV has HDMI ARC or eARC, but Bluetooth and optical are also reliable options.
In most homes, the connection takes only a few minutes once you know which ports to use and which sound output settings to change.
The details matter, though, because one wrong TV menu choice can leave you with silence even when everything is plugged in correctly.
What you need before starting
Before connecting the devices, confirm the model features on both the LG soundbar and the TCL TV.
Most modern LG soundbars support HDMI ARC, optical audio, and Bluetooth, while TCL TVs commonly include HDMI ARC or eARC on one HDMI port.
- An LG soundbar with power adapter
- A TCL TV with an available HDMI ARC/eARC port or optical output
- An HDMI cable labeled High Speed or Ultra High Speed
- An optical digital audio cable if using the optical method
- The TV remote and soundbar remote for setup
If you are unsure whether your TCL TV supports ARC or eARC, check the label next to the HDMI ports or review the model’s user manual.
TCL Google TV, Roku TV, and Fire TV editions all commonly support these features on select models.
Best method: HDMI ARC or eARC
HDMI ARC is usually the best way to connect an LG soundbar to a TCL TV because it carries high-quality audio through a single cable and often supports volume control from the TV remote.
If both devices support eARC, you may also get better support for formats such as Dolby Atmos and Dolby Digital Plus.
How to set it up with HDMI ARC
- Turn off both the TCL TV and the LG soundbar.
- Connect one end of the HDMI cable to the HDMI ARC or eARC port on the TCL TV.
- Connect the other end to the HDMI ARC or TV ARC port on the LG soundbar.
- Power on the soundbar and then the TV.
- Open the TCL TV sound settings and set the audio output to HDMI ARC, eARC, or external speaker.
On many TCL models, the ARC port is clearly labeled and may be on the side or rear panel.
On LG soundbars, the ARC-compatible HDMI input is often labeled HDMI OUT (TV eARC/ARC).
Why HDMI ARC is usually preferred
- Supports higher-quality audio than standard TV speakers
- Allows one-cable audio return from TV apps like Netflix and Hulu
- Often enables TV remote volume control through CEC
- Reduces cable clutter compared with separate audio cables
If audio does not play right away, check whether TCL’s CEC feature is enabled.
On TCL TVs, CEC may appear as HDMI-CEC, T-Link, or System Audio Control depending on the platform.
How to connect with an optical cable
If your TCL TV lacks ARC or if HDMI ARC is not working properly, an optical connection is a dependable alternative.
Optical audio, also called Toslink or S/PDIF, sends digital sound from the TV to the soundbar.
Optical setup steps
- Locate the optical output on the TCL TV, usually labeled Digital Audio Out or Optical Out.
- Connect the optical cable between the TV and the LG soundbar optical input.
- Remove the protective caps from the cable ends if present.
- Turn on both devices.
- Change the TV sound output to optical or external audio system.
Optical audio can deliver clear stereo and many surround formats, but it does not carry advanced HDMI features such as CEC-based volume control or some high-end object-based formats.
Still, it remains one of the most reliable ways to connect an LG soundbar to TCL TV hardware.
Can you use Bluetooth instead?
Bluetooth is convenient when you want a wireless setup, but it is not always the best choice for TV audio.
It can introduce slight latency, which may create lip-sync issues during movies or sports.
How to pair over Bluetooth
- Put the LG soundbar into Bluetooth pairing mode.
- Open the TCL TV Bluetooth menu from settings or sound output.
- Select the LG soundbar from the device list.
- Confirm pairing when prompted.
Bluetooth works well for casual viewing, background sound, or rooms where running cables is difficult.
For the most stable audio and best sync, HDMI ARC or optical is usually better.
Recommended TCL TV sound settings
After connecting, the TV audio menu should be configured correctly so the TCL TV routes sound to the LG soundbar instead of its internal speakers.
Menu labels vary slightly by TCL operating system, but the logic is the same.
- Set Audio Output to HDMI ARC, eARC, Optical, or External Speaker
- Turn off TV speakers if both soundbar and TV speakers are active
- Enable CEC or HDMI-CEC for remote volume control
- Set Digital Audio Format to Auto, Passthrough, or Bitstream if available
When using streaming apps built into the TCL TV, the correct audio output setting ensures the soundbar receives the sound directly from the TV rather than from individual apps.
LG soundbar settings to check
The soundbar usually switches inputs automatically, but some models need manual selection.
If your LG soundbar has an input button or remote control option, make sure it is set to the correct source.
- HDMI ARC input for HDMI connections
- OPTICAL input for optical cable connections
- Bluetooth mode if pairing wirelessly
If the soundbar includes modes such as AI Sound Pro, Standard, Cinema, or Bass Blast, you can choose based on your viewing preference.
These modes affect sound profile but not the connection itself.
Troubleshooting common connection problems
If your LG soundbar is connected to TCL TV but there is no sound, the issue is usually one of five common setup errors.
Checking them in order can save time.
No sound at all?
- Confirm the cable is plugged into the ARC or optical output, not a regular input
- Make sure the TV sound output is set to the soundbar connection type
- Raise the volume on both the TV and soundbar
- Power cycle both devices by unplugging them for 30 seconds
Sound plays, but the TV speakers are still active?
Disable internal TV speakers in the TCL sound settings and enable external audio output.
On some models, the TV may continue using speakers unless the output mode is manually changed.
Volume control does not work?
For HDMI ARC, CEC must be enabled on both the TCL TV and the LG soundbar.
If CEC is off, the TV remote may not control soundbar volume.
Audio delay or lip-sync problems?
Try HDMI ARC before Bluetooth if possible.
If delay remains, look for an audio sync adjustment in the TCL settings or the LG soundbar menu.
Dolby Atmos is not working?
Verify that the TCL TV, LG soundbar, HDMI cable, and source app all support Atmos. eARC is usually required for the best Atmos passthrough support from a TV to a soundbar.
Which connection method should you choose?
The best option depends on your TV model, the content you watch, and how much convenience you want.
For most users, HDMI ARC or eARC offers the best balance of sound quality and control.
- Choose HDMI ARC/eARC for the best overall experience
- Choose optical if ARC is unavailable or unstable
- Choose Bluetooth for quick wireless use with lower setup effort
Understanding how to connect LG soundbar to TCL TV becomes much easier once you identify the correct port, set the TV audio output, and confirm the soundbar input.
With the right setup, even basic TCL models can deliver a noticeably more immersive home theater sound.