The fastest way depends on what ports your TV and soundbar have

Most soundbars connect through HDMI, optical audio, or Bluetooth — in that order of preference. HDMI gives the best sound quality and handles everything in one cable. Optical audio (a thin digital cable) works on almost any TV made in the last 15 years. Bluetooth is wireless but can have lag or dropouts, so it's useful as a backup when the other two aren't available.

Start by checking what ports sit on the back of your TV and soundbar. Look for HDMI ports (flat rectangular), an optical audio port (a small square opening with a hinged cover), or Bluetooth capability (listed in the manual or on the box). Most modern soundbars have at least two of these three options.

Key Takeaways

  • HDMI is the best choice if your TV has an HDMI port labeled ARC or eARC, because one cable carries both picture and sound.
  • Optical audio cables are inexpensive and work with nearly all TVs, but you need to turn on the optical output in your TV's sound settings.
  • Bluetooth works without cables but may add a slight delay to the sound, which is noticeable during movies and games.
  • After connecting the cable, you usually need to change your TV's audio output setting so sound goes to the soundbar instead of the TV's built-in speakers.

Connecting via HDMI (the best option)

If your TV has an HDMI port labeled ARC or eARC, use this method. ARC stands for Audio Return Channel — it means the port can send sound back to the soundbar through the same cable that brings picture to the TV. You need only one HDMI cable.

Plug one end of an HDMI cable into the ARC or eARC port on your TV (usually HDMI 3 or 4, but check your TV manual). Plug the other end into the HDMI input on the soundbar. Turn on both devices. On your TV remote, go to Settings, then Sound or Audio, and look for an option called HDMI ARC, eARC, or Digital Audio Out. Select it and set it to On. The soundbar should now receive sound from everything your TV plays — cable box, streaming apps, built-in apps, all of it.

If your TV does not have an ARC port, you can still use HDMI, but you'll need two cables: one from your cable box or streaming device to the soundbar's HDMI input, and another from the soundbar's HDMI output to your TV. This works, but it's less convenient because the soundbar must be powered on whenever you want to watch TV.

Connecting via optical audio (works with older TVs)

Optical audio is a digital connection that works on almost every TV made since 2008. It uses a thin cable with a small square connector on each end. Buy an optical audio cable (also called a Toslink cable) from any electronics store — they cost $5 to $15.

Locate the optical audio port on your TV. It's usually on the back panel and labeled "Optical Out" or "Digital Audio Out." It has a small hinged plastic cover. Open the cover and insert one end of the optical cable. Plug the other end into the optical input on the soundbar (labeled "Optical In" or "Digital In"). Turn on both devices.

Go to your TV's Settings menu, find Sound or Audio, and look for Digital Audio Out or Optical Output. Make sure it is turned On. Some TVs also have an option to choose between PCM and Dolby Digital — either setting works, but Dolby Digital is slightly better if your soundbar supports it. The soundbar should now play all sound from your TV.

Connecting via Bluetooth (wireless, but with trade-offs)

Bluetooth is the easiest to set up because there are no cables, but it has two drawbacks: the sound can lag slightly behind the picture (noticeable during movies and games), and the connection can drop if the soundbar moves too far from the TV or if other wireless devices interfere.

Put the soundbar in pairing mode. This usually means holding a button on the soundbar or its remote for three to five seconds until a light blinks. Check your soundbar's manual for the exact step. On your TV, go to Settings, then Bluetooth, and look for the soundbar's name in the list of available devices. Select it. Once paired, the soundbar will connect automatically when both devices are turned on.

Bluetooth works best when the soundbar sits within 10 feet of the TV and there are no large metal objects between them. If you experience dropouts, move the soundbar closer or check whether a microwave, cordless phone, or WiFi router is nearby — these can interfere with Bluetooth signals.

Changing your TV's audio output after connecting

After you plug in the cable or pair via Bluetooth, your TV might still play sound through its own built-in speakers instead of the soundbar. This is because the TV's default audio output is set to "TV Speakers" or "Internal Speakers."

Go to your TV's Settings menu and find Sound, Audio, or Speaker Settings. Look for an option called Audio Output, Speaker Output, or Sound Output. Change it from "TV Speakers" or "Internal" to the name of your soundbar or to "External Speaker" or "HDMI ARC." Save the change. Now all sound should come from the soundbar. If you want to mute the TV's built-in speakers entirely, look for an option called "TV Speaker" or "Internal Speaker" and toggle it Off.

Troubleshooting when sound doesn't come through

If you've connected the cable but hear nothing from the soundbar, start by checking the volume. Make sure the soundbar's volume is not muted or set to zero — look for a mute button on the remote or the soundbar itself. Also check that your TV's volume is turned up.

Next, verify the connection. For HDMI, make sure the cable is fully inserted into both the TV and soundbar ports. For optical audio, check that the cable is seated firmly and the hinged cover is closed. For Bluetooth, go back to your TV's Bluetooth settings and confirm the soundbar is listed as connected (not just paired).

If the cable is connected but still no sound, go back to your TV's audio output settings and confirm you've selected the soundbar or external speaker option. Some TVs require you to restart after changing this setting. Turn the TV off completely, wait 10 seconds, and turn it back on.

If you're using HDMI ARC and it's not working, check your TV manual to confirm which HDMI port supports ARC — not all ports do. Also verify that your soundbar manual lists HDMI ARC as a supported feature; older soundbars may not have it.

When to use each connection type

Use HDMI ARC if your TV has it and your soundbar supports it. It's the cleanest setup because one cable carries both picture and sound, and you don't have to think about it again.

Use optical audio if your TV doesn't have HDMI ARC or if you want a wired connection that's been proven to work on older equipment. It's reliable and inexpensive.

Use Bluetooth only if HDMI and optical are not available, or if you want a wireless setup and don't mind the slight sound delay. It's useful as a temporary solution or for a secondary TV.

Some people connect via multiple methods at once — for example, HDMI ARC for everyday use and Bluetooth as a backup if the HDMI connection fails. Most soundbars let you do this; they'll automatically switch to whichever connection is active.

Frequently Asked Questions

Do I need a special HDMI cable for ARC?

No. Any standard HDMI cable works with ARC. You don't need to buy an expensive "ARC cable" — the feature is built into the port, not the cable. A basic HDMI cable costs $5 to $10.

Can I use a soundbar with a TV that has no audio output ports?

Yes, if the TV has HDMI ports. Use HDMI ARC or eARC. If the TV has neither HDMI ARC nor optical audio, Bluetooth is your only option, though it may have lag. Some very old TVs have neither; in that case, you'd need to connect the soundbar to your cable box or streaming device instead of the TV.

Why does my soundbar have a delay when using Bluetooth?

Bluetooth adds processing time as it compresses and transmits audio wirelessly. This lag is usually 100 to 200 milliseconds — noticeable during movies and games but not during regular TV or music. HDMI and optical audio have no delay because they're wired connections.

What if my soundbar has HDMI but my TV doesn't have HDMI ARC?

You can still use HDMI, but you'll need to connect your cable box or streaming device to the soundbar's HDMI input first, then run a cable from the soundbar's HDMI output to your TV's HDMI input. This way the soundbar processes the signal before sending it to the TV. It works, but requires the soundbar to be on whenever you watch TV.

Can I connect multiple soundbars to one TV?

Most TVs allow only one audio output at a time, so you can't send sound to two soundbars simultaneously through HDMI or optical. You could use Bluetooth to pair a second soundbar, but both would play the same audio with a slight delay difference, which sounds odd. For multiple rooms, use separate soundbars connected to separate devices or use a soundbar with a wireless subwoofer instead.