The fastest way depends on what your TV and soundbar have

Most soundbars connect through HDMI, which carries both picture and sound in one cable and is the simplest route. If your TV and soundbar both have HDMI ports, plug one end into the HDMI port on your soundbar and the other into an HDMI port on your TV — preferably one labeled ARC or eARC if your TV has it. Turn on both devices and switch your TV's audio output to the soundbar in the TV's sound settings. That's the whole process for HDMI.

If HDMI isn't an option, optical cable (a thin digital cable that looks like a small square connector) works on almost any TV made in the last ten years and most soundbars. Bluetooth is wireless but works best for streaming from phones or tablets, not for TV sound, because the delay between picture and sound becomes noticeable. Aux cable (a 3.5mm headphone-style jack) is the oldest method and works everywhere, but it carries only stereo sound, not surround.

Key Takeaways

  • HDMI is the best choice if both your TV and soundbar have it, because it handles both video and audio and requires only one cable.
  • Optical cable is the second choice and works on nearly all TVs and soundbars made in the last decade.
  • After plugging in the cable, you must tell your TV to send sound to the soundbar through the TV's audio output settings, not through the remote.
  • Bluetooth works for phones and tablets but creates a noticeable delay between picture and sound when used with a TV.
  • Once connected, test the sound by playing something you know — a movie or music — to confirm the soundbar is receiving the signal.

HDMI connection: the standard method

HDMI is the easiest connection because one cable does everything. Look at the back of your TV for an HDMI port labeled ARC (Audio Return Channel) or eARC (enhanced Audio Return Channel). If your TV has one, use that port — it lets the TV send sound back to the soundbar without a separate audio cable. Plug the HDMI cable into that port on the TV and into the HDMI input on your soundbar.

If your TV doesn't have ARC or eARC, use any other HDMI port on the TV. The soundbar will still receive sound, but you may need to run a separate optical or aux cable from the TV to the soundbar for audio. Check your soundbar's manual to see which audio inputs it has.

Turn on the TV and soundbar. Go to your TV's settings menu — usually found in a gear icon or "Settings" option on the remote — and look for "Sound" or "Audio Output." Select the soundbar or HDMI as the audio output. Your TV will now send all sound to the soundbar instead of its built-in speakers.

Optical cable connection: reliable and widely compatible

Optical cable is a digital connection that works on almost every TV and soundbar made since 2010. Look for a small square port on the back of your TV labeled "Optical," "SPDIF," or "Toslink." Plug one end of the optical cable into that port and the other end into the optical input on your soundbar.

Turn on both devices. Go to your TV's sound settings and select "Optical" or "Digital Audio Out" as the audio output. The soundbar should light up or beep to confirm it's receiving sound. Play something on your TV — a streaming service, a broadcast channel, or a disc — to test that sound is coming through the soundbar and not the TV's speakers.

If you hear sound from both the TV and the soundbar, go back to the TV's settings and disable the TV's internal speakers. This is usually called "Speaker Output" or "Internal Speaker" and can be turned off in the same audio settings menu where you selected optical output.

Bluetooth connection: wireless but best for mobile devices

Bluetooth is wireless and convenient for phones and tablets, but it introduces a delay — usually between 100 and 300 milliseconds — between the picture on your TV and the sound from the soundbar. This delay is noticeable during movies and makes watching uncomfortable. Use Bluetooth only if HDMI and optical are not available, or only for streaming music from a phone.

To connect via Bluetooth, put your 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 or the soundbar announces "pairing mode." Go to your TV's Bluetooth settings, look for the soundbar's name in the list of available devices, and select it. Once paired, the soundbar will reconnect automatically when you turn it on.

Test the connection by playing a movie or show. If the sound lags noticeably behind the picture, switch to HDMI or optical instead. Bluetooth works well for music streaming from a phone, but not for TV viewing.

Aux cable connection: the fallback option

An aux cable is a 3.5mm headphone-style jack that works on almost any device, but it carries only stereo sound — not the surround sound that makes soundbars worthwhile. Use aux only if your TV and soundbar have no HDMI, optical, or Bluetooth options.

Plug one end of the aux cable into the headphone jack or "Audio Out" port on your TV and the other end into the aux input on your soundbar. Go to your TV's sound settings and select "Aux" or "Headphone" as the audio output. Turn the volume on your TV all the way up — the soundbar's volume control will handle the actual loudness — and test with a movie or show.

Troubleshooting: no sound from the soundbar

If you've plugged in the cable but hear nothing, the most common cause is that your TV is still sending sound to its own speakers instead of the soundbar. Go back to your TV's sound settings and confirm that the audio output is set to the correct option — HDMI, Optical, Bluetooth, or Aux, depending on which cable you used. This step is straightforward to miss and is the reason most soundbar connections fail.

Second, check that the soundbar is powered on. Most soundbars have a small light on the front that glows when they're receiving power. If there's no light, plug it into a working outlet and try again. Third, make sure the cable is fully inserted into both the TV and the soundbar — a loose connection will cut off sound entirely.

If you still hear nothing, try a different HDMI port on your TV if you're using HDMI, or test the cable with a different device to confirm the cable itself works. Soundbar manuals usually include a troubleshooting section with specific steps for your model.

Volume and remote control after connection

Once the soundbar is connected and sound is coming through, use the soundbar's remote or buttons to adjust the volume. Most soundbars have physical buttons on the unit itself — usually a plus and minus sign — and many come with a small remote. Some soundbars also respond to your TV's remote if you program it, but this varies by model.

Set your TV's volume to a middle level — around 50 percent — and then use the soundbar's controls to reach your preferred loudness. If you set the TV's volume too high, you lose fine control over the soundbar's volume. If you set it too low, you may not hear quiet dialogue. A middle setting on the TV with the soundbar handling the rest is the standard approach.

Frequently Asked Questions

Do I need a special HDMI cable for a soundbar?

No. Any standard HDMI cable works. You don't need to buy an expensive "premium" HDMI cable — a basic one costs a few dollars and performs identically. The cable either works or it doesn't; there's no quality difference that affects sound.

Can I use a soundbar with a TV that only has one HDMI port?

Yes, but you'll need to use optical or aux cable for audio instead of HDMI. Alternatively, if your TV has an HDMI port labeled ARC, you can plug the soundbar into that port and run your other devices through a streaming device or cable box connected to a different input. Check your TV's manual to see which ports support ARC.

Why does my soundbar work with my phone but not my TV?

If Bluetooth works with your phone but not your TV, it's usually because your TV's Bluetooth is disabled or the soundbar isn't in pairing mode. Restart both devices and try pairing again. If it still doesn't work, use a wired connection — HDMI or optical — instead, which is more reliable for TV use anyway.

Should I turn off my TV's speakers after connecting a soundbar?

Yes. Go to your TV's sound settings and disable the internal speakers so sound comes only from the soundbar. This prevents echo and ensures you're hearing the soundbar's full quality. The setting is usually called "Speaker Output" or "Internal Speaker" and can be turned off in the audio menu.

What if my soundbar has no HDMI port?

Older soundbars often have only optical and aux inputs. Use optical if your TV has an optical port — it's more reliable than aux. If your TV has neither, you can buy an HDMI-to-optical converter, though this adds cost and complexity. For most setups, optical cable is sufficient and widely available.