The fastest way: HDMI with ARC or eARC
Most modern soundbars connect to your TV through 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 controls the soundbar's volume through your remote.
Look at the back of your TV for ports labeled HDMI 3, HDMI 4, or specifically marked ARC/eARC — not every HDMI port supports this feature. Plug one end of an HDMI cable into that port and the other end into the HDMI output on your soundbar. Turn on both devices. Your TV should recognize the soundbar automatically within a few seconds.
If nothing happens, go into your TV's settings menu, find the sound or audio section, and look for an option called HDMI ARC, eARC, or external speaker. Turn it on. Your TV remote should now control the soundbar volume, and you will hear all TV sound through the soundbar instead of the TV speakers.
Key Takeaways
- HDMI ARC or eARC is the easiest connection method because one cable carries both video and audio, and your TV remote controls volume.
- Not every HDMI port on your TV supports ARC — check the label on the back or your TV manual to find the correct port.
- If HDMI does not work, optical audio (a thin cable with a red light) is the second-most common fallback and works with older TVs.
- Bluetooth is wireless but requires manual pairing and does not let your TV remote control the soundbar volume.
- After connecting, disable your TV's internal speakers in the audio settings so sound plays only through the soundbar.
Optical audio: the older standard that still works
If your TV does not have HDMI ARC or the connection does not work, look for an optical audio port — a small square opening with a hinged plastic cover, usually labeled OPTICAL OUT or TOSLINK. This port outputs sound only, not video, but it is reliable and works with soundbars made in the last 15 years.
Plug one end of an optical audio cable (a thin cable with a red light visible inside) into the TV's optical port and the other end into the optical input on the soundbar. Turn on both devices. The soundbar should detect the signal and switch to optical mode automatically, though some models require you to press an input button on the soundbar or its remote.
One limitation: your TV remote will not control the soundbar volume when using optical audio. You will need to use the soundbar's remote or a physical button on the soundbar itself to adjust sound. This is a trade-off for using an older connection method, but it works reliably if HDMI ARC is not available.
Bluetooth: wireless but with limits
Bluetooth lets you connect without cables, but it has two drawbacks: your TV remote cannot control the soundbar volume, and the connection can drop if something interferes with the signal. Use Bluetooth only if HDMI and optical are not options, or if you want to pair a second device like a phone or tablet to the same soundbar.
To pair via Bluetooth, put the soundbar into pairing mode — usually by holding a button on the soundbar or remote for three to five seconds until a light blinks. Then go to your TV's Bluetooth settings, find the soundbar in the list of available devices, and select it. The devices should connect within a few seconds.
After pairing, the soundbar will reconnect automatically when you turn it on, as long as it is within range. However, if the connection drops, you may need to re-pair. For this reason, Bluetooth works best as a backup connection method rather than your primary one.
Turning off your TV speakers so sound comes only from the soundbar
After you connect the soundbar, go into your TV's settings and disable the internal speakers. This prevents sound from playing through both the TV and the soundbar at the same time, which sounds hollow and out of sync. The exact steps vary by TV brand, but the setting is usually in Audio, Sound, or Speaker settings.
Look for an option called External Speaker, HDMI Audio Out, or Speaker Output. Select it and choose the soundbar or External Speaker as the output. Some TVs have a toggle that says TV Speaker — turn it off. Save the settings and test by playing something on your TV. You should hear sound only from the soundbar.
If you cannot find this setting, check your TV manual or search "[Your TV brand] disable internal speakers" online. The manual will have the exact menu path for your model.
What to do if the soundbar does not show up or loses connection
If you connected via HDMI ARC and the soundbar does not appear, first check that you used the correct HDMI port — the one labeled ARC or eARC, not a standard HDMI port. Unplug the cable, wait 10 seconds, and plug it back in. Then restart both the TV and soundbar by turning them off and on again.
If the soundbar still does not work, go into your TV's audio settings and manually enable HDMI ARC or eARC. Some TVs ship with this feature turned off. Look for a setting that says "HDMI Audio Out" or "Digital Audio Out" and make sure it is set to HDMI ARC, not Optical or another option.
For optical audio, make sure the cable is pushed all the way into both ports — a loose connection is the most common cause of no sound. If the cable is find and still nothing plays, try a different optical cable. Optical cables can fail, and a bad cable looks identical to a working one.
If you are using Bluetooth and the connection keeps dropping, move the soundbar closer to the TV or remove any large metal objects between them. Bluetooth has a range of about 30 feet, but walls and metal can reduce it. If interference persists, switch to HDMI or optical instead.
Connecting a soundbar to a TV without HDMI ARC
Older TVs often lack HDMI ARC entirely. If your TV has no ARC port, optical audio is your best option. Look for the optical port on the back of the TV — if it is not there, check the side panel or the manual. If your TV has neither HDMI ARC nor optical, Bluetooth is the only wireless option, though you will lose remote control of volume.
Some very old TVs have only a headphone jack or RCA audio outputs (red and white plugs). If this is your situation, you can buy an adapter that converts RCA or headphone audio to optical or Bluetooth, but these adapters add cost and complexity. In many cases, upgrading to a soundbar with Bluetooth is simpler than buying multiple adapters.
Soundbar setup after connection
Once the soundbar is connected and producing sound, check the soundbar's settings menu — usually accessed through its remote or a button on the unit itself. Some soundbars have a night mode or dialogue boost that can improve clarity for TV shows and movies. Test these features with content you know well to see if they improve your experience.
If the soundbar has a subwoofer, it usually pairs wirelessly and automatically when you turn it on near the soundbar. If it does not connect on its own, hold the pairing button on the subwoofer for a few seconds until it pairs. The subwoofer should be placed on the floor to the side of your TV or behind your seating area for the best bass response.
Frequently Asked Questions
Can I use both HDMI and optical at the same time?
No. Your soundbar will only listen to one input at a time. If both are plugged in, the soundbar will prioritize one — usually HDMI if it is active. Unplug the cable you are not using to avoid confusion, or use your soundbar's remote to manually switch between inputs if you want to test both.
Why is there no sound even though the soundbar is connected?
First, check that your TV's internal speakers are turned off in the audio settings. Second, make sure the soundbar is set to the correct input — if you plugged it into HDMI but the soundbar is set to optical, it will not hear anything. Third, verify the cable is fully inserted into both the TV and soundbar. If all three are correct, restart both devices.
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 feature is built into the port, not the cable. However, the cable must be plugged into the ARC port on your TV, not a regular HDMI port.
Can I connect my soundbar to my TV and my phone at the same time?
If you are using HDMI or optical, the soundbar listens only to your TV. If you want to play audio from your phone, you would need to switch the soundbar's input to Bluetooth, which disconnects it from the TV. Some soundbars can pair with multiple devices but only play from one at a time. Check your soundbar manual to see if it supports multi-device pairing.
What if my soundbar remote does not control my TV volume?
This is normal if you are using optical audio or Bluetooth — only HDMI ARC and eARC let the soundbar remote control TV volume. If you are using HDMI ARC and the TV remote still does not work, go into your TV's settings and enable HDMI CEC or a similar feature (the name varies by brand). This allows devices to communicate through HDMI and share remote control.