How HDMI ARC works on a TCL TV
If you want better sound from a soundbar, AV receiver, or home theater system, HDMI ARC is one of the simplest ways to get it from a TCL TV.
This guide explains how to use HDMI ARC on a TCL TV, what settings matter, and why the feature sometimes works only after a few small adjustments.
ARC stands for Audio Return Channel, a feature in the HDMI specification that sends TV audio back to an external audio device through the same cable used for video input.
On TCL TVs, it is commonly used with soundbars from brands like Sonos, Bose, Samsung, LG, Vizio, and TCL’s own audio products, as well as AV receivers from Denon, Yamaha, Sony, and Onkyo.
What you need before setting it up
Before connecting anything, confirm that both devices support HDMI ARC.
Most modern TCL TVs include at least one HDMI port labeled ARC or eARC, while your soundbar or receiver must also have an HDMI ARC-compatible input.
- A TCL TV with an HDMI port labeled ARC or eARC
- An HDMI cable, preferably High Speed or Ultra High Speed
- A soundbar, AV receiver, or home theater device with an HDMI ARC input
- The TV remote and the audio device remote for setup
If your TCL TV has eARC, it is backward compatible with standard ARC devices.
That means you can still use a basic ARC soundbar or receiver even if the TV supports the newer format.
How to use HDMI ARC on a TCL TV
The setup process is straightforward: connect the correct HDMI port, enable the TV’s CEC control feature, and select the ARC output for audio.
The exact menu labels can vary slightly by TCL model and Roku TV, Google TV, or Android TV platform, but the general steps are similar.
1. Connect the HDMI cable to the ARC port
Plug one end of the HDMI cable into the TCL TV’s HDMI port labeled ARC or eARC.
Connect the other end to the HDMI ARC input on your soundbar or receiver.
Do not use a regular HDMI input on the audio device if it has a dedicated ARC port.
2. Turn on the soundbar or receiver
Power on the external audio device before adjusting TV settings.
Many TCL TVs detect the ARC device automatically once the hardware connection is in place, but detection is more reliable when the audio device is already powered on.
3. Enable HDMI-CEC on the TCL TV
ARC depends on HDMI-CEC for device control on most TCL TVs.
CEC may appear under names such as HDMI Control, T-Link, System Audio Control, or simply CEC, depending on the software version.
- Open the TCL TV Settings menu
- Go to System, Inputs, or Channels and Inputs, depending on the model
- Find HDMI-CEC, T-Link, or Control other devices
- Turn the feature on
Enabling CEC allows the TV remote to control volume on the connected audio device and helps the ARC handshake complete correctly.
4. Select the external speaker or audio output
After enabling CEC, go to the sound settings and set the audio output to the external speaker, audio system, or ARC device.
Some TCL TVs automatically switch to ARC once they detect the connection, while others require you to manually choose the output.
5. Test the audio
Play content from a built-in app such as Netflix, YouTube, or Prime Video.
Built-in streaming apps are the best test because TV audio must return through ARC to the soundbar or receiver.
If you hear sound and the TV remote changes the volume, the setup is working.
ARC vs eARC on TCL TVs
ARC and eARC are closely related, but eARC offers more bandwidth and supports higher-quality formats.
If your TCL TV and audio system both support eARC, you may get better compatibility with Dolby Atmos, Dolby TrueHD, and uncompressed audio formats.
- ARC: Standard version, widely supported, good for stereo, Dolby Digital, and many Dolby Atmos streaming apps
- eARC: Enhanced version, supports more audio formats and improved lip-sync handling
If one device is ARC-only, the connection still works at ARC level.
You do not need both devices to be eARC-compatible to get basic TV audio through HDMI.
Best TCL settings for reliable ARC performance
Many ARC problems come from settings, not faulty hardware.
Checking these options can solve most issues quickly.
- Make sure HDMI-CEC is enabled
- Set audio output to HDMI ARC or external speakers
- Disable TV speakers if the menu offers that option
- Check that the soundbar or receiver input is set to ARC
- Update the TCL TV firmware if ARC is unstable
On some TCL Roku TVs, you may need to go to Settings, System, Control other devices, and then enable 1-touch play and system audio control.
On TCL Google TV models, similar controls are usually found under Settings, Channels and Inputs, External Inputs, or Remotes and Accessories.
Common HDMI ARC problems on TCL TVs and how to fix them
If ARC does not work immediately, the issue is usually easy to isolate.
Start with the HDMI cable, then move to settings, then device compatibility.
No sound from the soundbar or receiver?
Confirm that the HDMI cable is plugged into the correct ARC port on both devices.
Then power-cycle the TV and the audio device by unplugging both from power for 60 seconds, reconnecting the HDMI cable, and turning them back on.
TV speakers still play instead of the soundbar?
This usually means the audio output is still set to internal speakers or CEC is off.
Recheck sound settings and confirm that the external device is selected as the audio output.
Volume control does not work?
Volume control over ARC requires HDMI-CEC.
If the soundbar plays audio but the TV remote cannot change volume, re-enable CEC on both devices and ensure the soundbar is not in a mode that disables TV control.
Audio is delayed or out of sync?
Look for audio delay, lip-sync, or AV sync settings on the TCL TV or soundbar.
Many receivers and soundbars include a manual delay adjustment that can correct the timing mismatch.
Only some apps output sound through ARC?
Test multiple sources.
If built-in apps work but a connected gaming console does not, the console may need separate audio settings.
ARC mainly carries audio from the TV back to the sound system, so device-specific output settings still matter for external sources.
How to use HDMI ARC on a TCL TV with a soundbar
Soundbars are the most common ARC setup because they offer simple installation and strong audio improvement over built-in TV speakers.
For best results, keep the soundbar on the ARC input, leave HDMI-CEC enabled, and use the TV remote for everyday control.
- Mount or place the soundbar below the TV for clear front-channel audio
- Use a single high-quality HDMI cable rather than optical audio
- Enable passthrough or auto audio mode if the soundbar offers it
- Choose Dolby Digital or Auto in the TCL audio format menu when available
If your soundbar supports voice assistants, app control, or room calibration such as Sonos Trueplay or automatic EQ tuning, complete those steps after ARC is working so the system can tune to the room correctly.
When to use ARC instead of optical audio
Optical audio still works well for many setups, but HDMI ARC usually offers better convenience because it supports remote volume control and a single-cable setup.
It is especially useful if you stream directly from the TCL TV and want all audio to route through one system.
Optical can be a fallback if ARC is unreliable, but it does not support the same level of device control or the broader format support available on newer HDMI connections.
For most TCL users, ARC is the better starting point.
Compatibility tips for gaming consoles and streaming devices
If you use a PlayStation, Xbox, Apple TV, Fire TV, or Roku streaming device, connect those devices directly to the TCL TV or to the receiver if your setup supports it.
ARC then returns the TV’s processed audio to the sound system.
This arrangement keeps the setup simple and reduces cable clutter.
It also lets the TCL TV manage the audio handshake for streaming apps and connected devices in one place.
How to verify ARC is working correctly
A working ARC setup on a TCL TV usually shows three signs: sound comes from the external speaker, the TV remote controls volume, and the audio remains active when switching among TV apps.
If all three are true, the connection is configured properly.
- Sound plays through the soundbar or receiver, not the TV speakers
- Volume changes appear on the external audio device
- Built-in streaming apps output audio without manual switching
Once these checks pass, you can leave ARC enabled and use the TCL TV as the central hub for your home entertainment system.