The three ways to connect speakers, and which one works for your setup

Most TVs have built-in speakers that sound thin and tinny. Adding external speakers fixes this, but the connection method depends on what you own. The three main routes are HDMI (the simplest if your TV and speakers both support it), optical audio cable (the most reliable for older equipment), and Bluetooth (wireless, but sometimes laggy). Start by checking what ports are on the back of your TV — you'll see them labeled, and that determines which method you can use.

Before you buy anything, look at the back panel of your TV. You're looking for one of these: an HDMI port labeled ARC or eARC, a small round optical port (looks like a tiny square hole with a light inside), or Bluetooth capability listed in the manual or on-screen settings. If your TV has none of these, you may need an adapter, which we'll cover below. Write down what you find — this takes two minutes and saves you from buying the wrong cable.

Key Takeaways

  • HDMI ARC or eARC is the easiest method if both your TV and speakers support it, because one cable carries both picture and sound and you control volume from your TV remote.
  • Optical audio cable works with almost any TV made in the last fifteen years and is immune to interference, but requires a separate cable and manual volume control on the speaker.
  • Bluetooth is wireless and convenient but can have a half-second delay between what you see on screen and what you hear, which is annoying during movies.
  • If your TV has no audio outputs at all, you can run sound through a soundbar or powered speakers connected via HDMI, or use an adapter that pulls audio from the TV's antenna input.

Connecting via HDMI ARC or eARC (the easiest route)

HDMI ARC stands for Audio Return Channel. It means one HDMI cable can send picture to your TV and send sound back out to your speakers at the same time. This is the simplest setup because you use one cable and control everything from your TV remote. Not all HDMI ports do this — only one port on your TV supports ARC, and it's usually labeled on the back panel or in your manual. If your TV was made after 2015, it almost certainly has one.

To set this up: plug one end of an HDMI cable into the ARC port on your TV (usually HDMI 3 or 4, but check your manual). Plug the other end into the HDMI input on your speaker or soundbar. Then go into your TV's settings menu, find the audio or sound section, and look for an option called HDMI ARC or eARC. Turn it on. Your TV should recognize the speakers automatically. If it doesn't, restart both devices and try again. The whole process takes about five minutes.

eARC is a newer version of ARC that handles better sound quality, but it works the same way — use the same cable and the same steps. If your TV manual mentions eARC, use that port instead of a regular ARC port. The difference only matters if you're using high-quality audio formats, which most people aren't.

Connecting via optical audio cable (the most reliable method)

An optical audio cable is a thin fiber-optic cord that carries sound from your TV to your speakers. It's more reliable than HDMI because it's immune to electrical interference, and it works with almost every TV made in the last fifteen years. The downside is that you need a separate cable, and you'll control the speaker volume with a knob or remote on the speaker itself, not your TV remote. But if you have older equipment or a TV that doesn't support HDMI ARC, this is your best option.

First, find the optical port on your TV. It's a small square hole, usually on the back panel, and labeled "Optical Out" or "TOSLINK". Buy an optical audio cable from any electronics store — they cost five to fifteen dollars and all work the same. Plug one end into the TV's optical port and the other into the optical input on your speaker. Go into your TV's audio settings and select "Optical Out" as the audio output. That's it. The speaker will start receiving sound when ready.

If you don't see sound right away, check that the speaker is powered on and set to the correct input. Most speakers have a small button or menu to switch between inputs — look for one labeled "Optical" or "TOSLINK". If you still hear nothing, restart the TV and try again. Optical cables rarely fail, so if it's not working, the issue is usually a setting rather than the cable itself.

Connecting via Bluetooth (wireless, but with a catch)

Bluetooth is convenient because there are no cables, but it has a real drawback: sound delay. Most Bluetooth speakers have a lag of about half a second between what you see on screen and what you hear. This is barely noticeable during dialogue, but it's obvious and annoying during action scenes or music. If you can live with that, Bluetooth is the simplest setup.

To connect: put your speaker in pairing mode (usually a button on the back or bottom). On your TV, go to Settings, then Bluetooth or Wireless, and look for your speaker's name in the list. Select it and confirm. Your TV will pair with the speaker, and sound should start playing when ready. If it doesn't, make sure the speaker is powered on and close enough to the TV — Bluetooth works best within thirty feet with a clear line of sight.

If the delay bothers you, switch to HDMI ARC or optical instead. Bluetooth is best for situations where you don't mind the lag, like background music or casual watching. For movies or sports, the other methods are better.

What to do if your TV has no audio outputs

Some very new or very cheap TVs have no audio ports at all — no optical, no ARC, nothing. This is rare, but it happens. You have two options. The first is to use a soundbar or powered speakers that connect via HDMI. Plug the HDMI cable from your cable box or streaming device into the soundbar, then plug the soundbar's HDMI output into your TV. The soundbar becomes the middleman and handles all the audio. This works perfectly and is actually cleaner than connecting speakers directly to the TV.

The second option is to use an adapter that extracts audio from your TV's antenna input or USB port. These adapters are cheap (ten to twenty dollars) but less reliable than a soundbar. If you go this route, buy one that specifically matches your TV model — search your TV's model number plus "audio adapter" to find the right one. Adapters work, but they're a workaround rather than a real solution, so a soundbar is the better choice if you can afford it.

Troubleshooting sound that cuts out or doesn't work at all

If you've connected everything but hear nothing, start with the simplest checks. Make sure the speaker is powered on and the volume is turned up. Check that you selected the right input on the speaker — most speakers have a button to switch between HDMI, optical, Bluetooth, and other inputs. If you're using optical or HDMI, make sure the cable is plugged in all the way on both ends. Cables can look connected but not be fully seated.

Next, go into your TV's audio settings and confirm that the output is set to the external speaker, not the TV's built-in speakers. The setting is usually called "Audio Output" or "Speaker Output". Select your speaker or soundbar from the list. If you don't see it listed, the TV hasn't recognized it yet — unplug the cable, wait ten seconds, and plug it back in. Then restart the TV.

If sound cuts out during use, the issue is usually interference (for Bluetooth) or a loose cable (for optical or HDMI). For Bluetooth, move the speaker closer to the TV or remove obstacles between them. For cables, unplug and reseat both ends. If cutting out continues, try a different cable — the original one may be damaged.

Controlling volume and switching between speakers

With HDMI ARC, your TV remote controls the speaker volume automatically — no extra steps needed. With optical or Bluetooth, you control volume on the speaker itself using its knob or remote. Some speakers have a remote that comes in the box; others require you to buy one separately. Check your speaker's manual to see if a remote is included.

If you have multiple speakers or a soundbar, you can usually switch between them in your TV's audio settings. Go to Settings, then Sound or Audio, and look for an option to select the active speaker. Some TVs let you switch quickly from the remote's menu, while others require you to dig into settings. Check your TV manual for the fastest way to do this on your model.

Frequently Asked Questions

Can I use a regular HDMI cable for ARC, or do I need a special one?

A regular HDMI cable works fine for ARC. There are HDMI cables marketed as "ARC cables", but they're not necessary — any HDMI 2.0 or newer cable will do the job. The difference is in the port on your TV, not the cable itself.

Why is there a delay when I use Bluetooth speakers?

Bluetooth has built-in latency because it compresses the audio signal before sending it wirelessly. Most Bluetooth speakers have a delay of 100 to 300 milliseconds. This is fine for music or casual TV, but noticeable during movies. Optical and HDMI have almost no delay.

Do I need to buy expensive speaker cables?

No. Optical cables are all the same and cost five to fifteen dollars. HDMI cables vary in price, but a basic one works just as well as an expensive one for audio. Don't spend more than twenty dollars on any cable for this setup.

What if my speaker only has a 3.5mm headphone jack?

Your TV probably doesn't have a 3.5mm output, so you'll need an adapter. Buy an optical-to-3.5mm adapter (about ten dollars) and plug the optical cable from your TV into the adapter, then plug the 3.5mm cable from the adapter into your speaker. This works, but it's a workaround — consider upgrading to a speaker with optical or HDMI input.

Can I connect speakers to my TV if I'm using a cable box or streaming device?

Yes. If you're using a cable box or Roku, you can connect speakers directly to the TV using any of the methods above, and they'll receive sound from whatever is plugged into the TV. Alternatively, you can connect speakers directly to the cable box or streaming device if it has audio outputs — this sometimes gives you better control over the audio.