The fastest way: HDMI with ARC or eARC

Most soundbars connect to your TV using a single HDMI cable plugged into the HDMI port labeled ARC or eARC on the back of your TV. This is the simplest route because one cable carries both picture and sound, and your TV can control the soundbar's volume with your remote.

Look at the back of your TV for HDMI ports. One will be labeled ARC (Audio Return Channel) or eARC (enhanced Audio Return Channel)—usually HDMI 3 or 4, but check your TV's manual if you cannot find it. Plug one end of an HDMI cable into that port and the other end into the HDMI input on your soundbar. Turn on both devices. Your TV should recognize the soundbar automatically within a few seconds.

If your TV does not have ARC or eARC, or if the soundbar does not appear, move to the optical cable method below. Do not assume the connection failed until you have tried both.

Key Takeaways

  • HDMI ARC or eARC is the simplest connection—one cable carries sound from your TV to the soundbar, and your remote controls both.
  • If your TV or soundbar lacks HDMI ARC, use an optical cable instead, which is nearly as reliable and costs under $10.
  • After connecting the cable, go into your TV's audio settings and select the soundbar as the output device.
  • If you hear no sound, check that the soundbar is powered on, the cable is fully inserted, and your TV's audio output is not muted or set to internal speakers.

The backup method: optical cable

If your TV has no ARC port or the HDMI connection does not work, use an optical cable (also called a Toslink cable). This cable carries sound only, not picture, but it is reliable and inexpensive—usually $5 to $15 at any electronics store.

Find the optical audio output port on your TV—it is a small square opening, often labeled "Optical Out" or "SPDIF." Plug one end of the optical cable into that port and the other end into the optical input on the back of your soundbar. The cable will only fit one way. Push it in until you hear or feel a click.

Turn on the soundbar and your TV. Go into your TV's settings menu, find the audio or sound section, and select "Optical" or "External Speaker" as the audio output. Your TV should send sound through the cable to the soundbar. If you still hear nothing, check that the soundbar is not muted—look for a mute button on the remote or the unit itself.

Wireless connection: Bluetooth

Some soundbars support Bluetooth, which means you can pair them without any cable. This works well if your TV has Bluetooth built in, though not all do. Check your TV's manual or settings to confirm.

Put the soundbar in pairing mode—usually by holding a button on the remote or the unit for three to five seconds until a light blinks. Go to your TV's Bluetooth settings, search for available devices, and select the soundbar by name. Once paired, your TV will connect to the soundbar automatically each time you turn both on.

Bluetooth is convenient but has one drawback: some TVs do not send audio over Bluetooth, or they send it with a slight delay. If you notice the sound lags behind the picture, switch back to HDMI ARC or optical cable instead.

Adjusting volume and audio settings

After the cable is connected, your TV may still be sending sound to its internal speakers instead of the soundbar. Go into your TV's settings—usually under Audio, Sound, or Speaker Settings—and look for an option called "Audio Output," "Speaker," or "Sound Output." Select the soundbar or "External Speaker" from the list.

If your TV remote does not control the soundbar's volume, you may need to enable HDMI CEC (Consumer Electronics Control) in your TV's settings. This feature lets your TV remote talk to the soundbar. Look for a setting called CEC, HDMI Control, or Anynet+ (Samsung uses this name). Turn it on, and your remote should control both devices.

Test the volume by pressing the up button on your remote. If the soundbar volume changes, the connection is working. If only your TV's internal speaker volume changes, go back to the audio output settings and make sure the soundbar is selected.

Troubleshooting when you hear no sound

Start with the simplest checks: Is the soundbar powered on? Look for a light on the front or back. Is the cable fully inserted into both the TV and the soundbar? Push it in firmly—a loose connection is the most common reason sound does not come through.

Next, check your TV's audio output settings again. Go to Settings > Audio or Sound and confirm the soundbar is selected, not "Internal Speaker" or "TV Speaker." If the soundbar is selected but you still hear nothing, try unplugging the soundbar for 30 seconds, then plugging it back in. This resets the connection.

If you are using HDMI ARC and it is not working, try switching to optical cable instead. Some TV models have bugs with ARC, and optical is often more stable. If you are using optical and it fails, check that the cable is not bent or damaged—look at the ends to make sure they are clean and straight.

When to call the TV or soundbar manufacturer

If you have tried both HDMI and optical cables, confirmed the soundbar is powered on, checked your audio settings twice, and still hear nothing, the problem is likely a hardware fault rather than a connection issue. Contact the soundbar manufacturer's support line—they can walk you through model-specific steps or arrange a replacement if the unit is defective.

Keep your receipt and the soundbar's serial number (usually on the back or bottom) handy when you call. Most soundbars come with a one-year warranty that covers defects in the unit itself, though not damage from misuse.

Frequently Asked Questions

Can I use both HDMI and optical cables at the same time?

You can plug both cables in, but your TV will only send sound through one at a time. Pick the one that works best and leave the other disconnected to avoid confusion. HDMI ARC is usually the better choice if your TV supports it, because it also lets your remote control the soundbar.

Do I need a special HDMI cable for ARC?

No. Any standard HDMI cable works with ARC. You do not need to buy an expensive "ARC cable"—the label is marketing. A basic HDMI cable from any store will work fine.

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

Your soundbar probably connects to your phone over Bluetooth, which is different from how it connects to your TV. For your TV, use HDMI ARC or optical cable instead. Bluetooth from a TV often has delays or does not work at all, depending on the model.

Can I connect a soundbar to a very old TV?

If your TV has an optical audio output port, yes—use an optical cable. If it has neither optical nor HDMI ARC, you may need an adapter or a different connection method. Check your TV's manual for the audio output options, or contact the soundbar manufacturer to ask what older TV models they support.

Should I use the soundbar's remote or my TV remote?

If HDMI CEC is enabled, your TV remote controls both devices. If not, use the soundbar's remote for volume and the TV remote for everything else. Most people find it easier to use just the TV remote, so enable CEC in your TV's settings if you have not already.