How to connect Sonos Arc to TV
Learning how to connect Sonos Arc to TV is usually straightforward, but the right cable and TV settings matter more than most people expect.
This guide explains the exact setup process, what to do if your TV lacks eARC, and how to solve the most common sound problems.
What you need before setup
The Sonos Arc is designed for modern TVs and works best with HDMI eARC, though it can also work with standard HDMI ARC or an optical adapter.
Before you start, check your TV ports and confirm that the Arc has enough clearance under the screen.
- Sonos Arc soundbar
- HDMI cable included with the Arc
- TV with HDMI ARC or HDMI eARC
- Sonos app on iOS or Android
- Optional optical audio adapter for older TVs
If your TV supports Dolby Atmos, HDMI eARC is the preferred connection because it can carry higher-quality audio formats.
ARC still works for most users, but some advanced formats may be limited depending on your TV model.
How to connect Sonos Arc to TV with HDMI eARC or ARC
The most reliable way to connect the Sonos Arc is with HDMI.
This method supports TV audio control, automatic input detection, and better compatibility with surround sound formats.
Step 1: Find the correct HDMI port
Look for an HDMI port labeled ARC or eARC on the back or side of your TV.
If your TV has more than one HDMI port, only one will usually support audio return.
Step 2: Connect the cable
Plug one end of the included HDMI cable into the HDMI port on the Sonos Arc.
Connect the other end to the TV’s ARC/eARC HDMI port.
Make sure the connection is secure at both ends.
Step 3: Power on the TV and Sonos Arc
Turn on your TV and allow the Sonos Arc to power up.
In many cases, the soundbar will automatically detect the TV connection and begin playing audio once setup is complete.
Step 4: Complete setup in the Sonos app
Open the Sonos app and follow the on-screen prompts to add the Arc to your system.
If this is your first Sonos product, the app will guide you through room setup, Wi-Fi connection, and TV integration.
Step 5: Confirm the TV audio output
On your TV, go to the sound settings and set the audio output to external speakers, ARC/eARC, or HDMI audio system.
Some TVs also require enabling HDMI-CEC, which lets the TV communicate with the soundbar.
How to connect Sonos Arc to TV without HDMI eARC
If your TV has HDMI ARC but not eARC, the Sonos Arc can still work well for everyday viewing.
You may not get every advanced audio format, but you can still enjoy clear dialogue, strong bass, and Dolby Digital playback where supported.
For older TVs without ARC, Sonos provides an optical audio adapter.
This is useful when the TV has only optical output or when HDMI ARC is unavailable.
Using the optical adapter
To use the optical adapter, connect it to the Sonos Arc’s HDMI port and then attach the optical cable to your TV’s optical output.
In the Sonos app, you may be prompted to confirm the adapter connection before the system finishes setup.
Keep in mind that optical connections do not support HDMI-CEC or the same level of audio format passthrough as HDMI ARC or eARC.
They are a practical fallback, but HDMI remains the better long-term option.
Recommended TV settings for Sonos Arc
Correct TV settings are essential if you want the Sonos Arc to perform properly.
Even with the right cable, your TV may send the wrong audio format if the sound menu is not configured correctly.
- Set audio output to HDMI ARC/eARC or external speakers
- Enable HDMI-CEC if your TV uses a brand-specific name such as Anynet+, Bravia Sync, Simplink, VIERA Link, or EasyLink
- Choose Pass Through or Auto for digital audio output when available
- Disable TV speakers if the TV continues playing sound through its internal speakers
- Set audio format to Bitstream or Dolby Digital if your TV offers that option
If you have a Dolby Atmos-capable TV and streaming device, also confirm that the content itself supports Atmos.
A Sonos Arc can only play the format that the source and TV actually send.
How to check if Sonos Arc is connected properly
After setup, the Sonos app should show the Arc as connected to your TV.
You can also verify the connection by playing a movie, TV show, or test video and watching for instant audio from the soundbar.
Signs of a successful setup include:
- The TV remote controls Sonos volume
- TV audio plays through the Arc, not the built-in speakers
- The Sonos app shows the TV source correctly
- Dialogue and effects are synchronized without obvious delay
If volume control works but no sound plays, the issue is usually a TV audio setting, input selection, or a cable problem rather than the Arc itself.
Common problems when connecting Sonos Arc to TV
Most connection issues fall into a few predictable categories.
Knowing what to check first can save time and avoid unnecessary resets.
No sound from the Sonos Arc
Confirm that the HDMI cable is connected to the TV’s ARC or eARC port, not a regular HDMI input.
Then check that the TV’s sound output is set to the external audio system.
Remote control does not adjust volume
This usually means HDMI-CEC is disabled.
Turn it on in the TV menu.
Different manufacturers use different names for this feature, but the function is the same: it allows the TV remote to control connected devices.
Audio cuts out or sounds delayed
Try a different HDMI cable, especially if the cable is old or low quality.
Also check for firmware updates on the TV and in the Sonos app, since software updates often fix compatibility issues.
Dolby Atmos is not showing up
Atmos requires a compatible TV, source device, content format, and often HDMI eARC.
If any part of the chain does not support Atmos, the system may fall back to stereo or Dolby Digital instead.
Best practices for the best Sonos Arc TV experience
Once the Arc is connected, a few simple choices can improve everyday performance.
These settings and habits help preserve sound quality and reduce troubleshooting later.
- Use the included HDMI cable or a certified high-speed replacement
- Keep TV and Sonos software updated
- Use HDMI eARC if your TV supports it
- Place the Arc centered below the TV without blocking its front-facing drivers
- Run Trueplay tuning if you use an iPhone or iPad and want optimized room calibration
If you later add Sonos Sub or rear speakers, the Arc can serve as the centerpiece of a full home theater system.
That makes the initial TV connection even more important, because the same HDMI path carries the audio for the entire setup.
Which connection method should you choose?
For most people, the answer is simple: use HDMI eARC if your TV supports it.
If not, use HDMI ARC.
Optical should only be the fallback option for older televisions without the right HDMI features.
When you understand how to connect Sonos Arc to TV correctly, the setup becomes fast, stable, and easy to maintain.
The key is matching the cable, port, and TV audio settings so the soundbar can do its job without guesswork.