HDMI is the simplest way to connect a soundbar to your TV

An HDMI cable carries both picture and sound from your TV to the soundbar in a single connection. Most modern soundbars have at least one HDMI port, and most TVs have multiple HDMI inputs on the back or side. This method is straightforward: plug one end of an HDMI cable into an HDMI output on your TV (often labeled HDMI Out or HDMI ARC/eARC) and the other end into an HDMI input on the soundbar. Your TV will automatically send audio to the soundbar once it detects the connection.

The advantage of HDMI over other cables is that it handles high-quality audio formats and requires no extra setup beyond plugging in the cable. You won't need to manually switch inputs or adjust volume controls in multiple places—the soundbar will respond to your TV remote in most cases.

Key Takeaways

  • Use an HDMI cable rated for your TV's capabilities (HDMI 2.0 or higher works for most soundbars and TVs made in the last five years).
  • Connect the cable to an HDMI output port on your TV and an HDMI input port on the soundbar, then turn both devices on.
  • Check your TV's audio output settings to confirm it is sending sound to the soundbar rather than the TV's built-in speakers.
  • If sound does not come through, restart both devices and verify the HDMI cable is fully inserted into both ports.
  • Some TVs require you to enable HDMI CEC (Consumer Electronics Control) in the settings menu so the soundbar can respond to your TV remote.

Locate the HDMI ports on your TV and soundbar

Look at the back or side of your TV for HDMI ports. They are rectangular slots about the size of a USB port, but wider and flatter. Most TVs have between two and four HDMI inputs. One port may be labeled HDMI ARC (Audio Return Channel) or HDMI eARC (enhanced Audio Return Channel)—this is the best choice for a soundbar because it allows two-way communication between the TV and soundbar.

On your soundbar, find the HDMI input port. It is usually on the back panel. If your soundbar has only one HDMI port, that is your input. If it has two, one is typically labeled HDMI In and the other HDMI Out or HDMI ARC. Use the HDMI In port unless your soundbar's manual specifies otherwise.

Write down which HDMI port number you are using on your TV (HDMI 1, HDMI 2, etc.). You will need this information if you have to troubleshoot later.

Connect the HDMI cable and power on both devices

Plug one end of the HDMI cable firmly into the HDMI output port on your TV. Push until you hear or feel a small click—a loose connection will not transmit sound. Plug the other end into the HDMI input port on the soundbar with the same firm pressure.

Turn on your TV first, then turn on the soundbar. Wait about 10 seconds for both devices to recognize each other. Your TV screen may briefly show a notification that a new device has been detected. The soundbar may display a light or message indicating it has received an HDMI signal.

If you have a remote control for the soundbar, set it aside for now. Most soundbars will work with your TV remote once HDMI is connected, so you may not need the soundbar remote at all.

Check your TV's audio output settings

Your TV may still be set to play sound through its own built-in speakers instead of sending it to the soundbar. To change this, open your TV's settings menu using your remote. Look for a section called Audio, Sound, or Speaker Settings. The exact name and location depend on your TV brand—Samsung calls it Sound, LG calls it Audio, and Roku calls it Audio.

In the audio settings, find an option for Speaker or Audio Output. You should see choices like TV Speaker, External Speaker, or HDMI. Select the option that directs sound to the soundbar. Common names are HDMI, HDMI ARC, External Soundbar, or Optical Out (if you are using a different cable type). Save your changes.

Turn up the volume on your TV using your remote. You should hear sound come from the soundbar instead of the TV. If you do not hear anything, move to the troubleshooting section below.

Enable HDMI CEC if your soundbar remote is not responding

HDMI CEC (Consumer Electronics Control) is a feature that lets your TV remote control the soundbar's volume and power. Not all soundbars support it, but most do. If you want to use a single remote for both devices, you may need to turn this feature on.

In your TV's settings menu, look for a section called HDMI, External Devices, or System. Find an option called HDMI CEC, Anynet+, Bravia Sync, or EasyLink (the name varies by brand). Turn this setting on. Some TVs have it enabled by default.

Once HDMI CEC is on, test your TV remote by pressing the volume up or down button. The soundbar volume should change. If it does not, check your soundbar's manual to confirm it supports HDMI CEC, or try restarting both devices.

What to do if sound does not come through

Start by checking the physical connection. Turn off both devices, then unplug the HDMI cable from both the TV and soundbar. Look at both ends of the cable for bent pins or damage. Plug the cable back in firmly, making sure it clicks into place on both ends. Turn both devices back on and wait 15 seconds.

If you still hear no sound, go back to your TV's audio settings and confirm you selected the correct output. Some TVs default back to TV Speaker if you do not save the change properly. Also check that the soundbar itself is not muted—look for a mute button on the soundbar or its remote, and press it to unmute if needed.

Try a different HDMI port on your TV. Unplug the cable from the current port and plug it into another HDMI input. Then go back to your TV's audio settings and select the new HDMI port as the audio output. Sometimes one HDMI port works better than another.

If you have tried all these steps and still have no sound, the HDMI cable itself may be faulty. Borrow a cable from another device (a streaming player, gaming console, or computer) and test it. If sound works with a different cable, you need a new HDMI cable. If sound still does not work, contact the soundbar manufacturer's support line—there may be a hardware issue with the soundbar or TV.

Choosing the right HDMI cable for your setup

Any HDMI cable will carry audio, but the version matters for picture quality if you are also running video through it. For soundbars, audio is the only concern, so an older HDMI cable will work fine. However, if you are buying a new cable, choose HDMI 2.0 or higher to future-proof your setup. These cables are inexpensive and work with all current TVs and soundbars.

Cable length depends on the distance between your TV and soundbar. Most soundbars sit directly below or in front of the TV, so a 6-foot cable is usually enough. If your soundbar is farther away, measure the distance and add a few feet for slack. Cables longer than 25 feet may lose signal quality, but this is rare in home setups.

Avoid extremely cheap cables from unknown brands—they may have loose connectors or poor shielding. Mid-range cables from established brands work reliably and cost between $10 and $20.

Frequently Asked Questions

Can I use HDMI if my TV does not have an HDMI ARC port?

Yes. HDMI ARC makes the connection easier because it sends sound both ways, but a regular HDMI port works fine. Plug the cable into any available HDMI input on your TV and follow the same steps to select it in your audio settings. The only difference is that HDMI ARC allows the soundbar to control your TV's volume more reliably.

Do I need to unplug my TV's optical cable if I already have one connected to the soundbar?

No, but you should only use one connection at a time. If both HDMI and optical cables are plugged in, go to your TV's audio settings and choose which one you want to use. Using both simultaneously can cause audio delay or confusion about which device is receiving the sound signal.

Why is there a delay between what I see on screen and what I hear from the soundbar?

This is called audio lag and usually happens when the soundbar is processing the signal. Most soundbars have a setting to reduce this delay—check your soundbar's menu for an option called Lip Sync, Audio Delay, or Sync Adjustment. You can also try switching to a different audio format in your TV's settings, such as PCM instead of Dolby Digital.

Will the soundbar work if I connect it to a different HDMI port than the one my cable box uses?

Yes. Each HDMI port on your TV is independent. You can connect your cable box to HDMI 1, your soundbar to HDMI 2, and a streaming device to HDMI 3. Your TV will send audio to whichever device you selected in the audio output settings, regardless of which HDMI port it is plugged into.

What if my soundbar has no HDMI port at all?

Older soundbars may only have optical or 3.5mm audio inputs. In that case, you cannot use HDMI. Instead, run an optical cable from your TV's optical audio output to the soundbar's optical input, or use a 3.5mm cable if your soundbar has that port. Both methods work well, though HDMI is preferred for newer equipment.