By Willie Greer, Founder · Last updated June 14, 2026
You bought a soundbar to escape thin, tinny TV speakers — now you just need sound to come out of it. The good news: connecting a soundbar to a TV takes one cable and a couple of settings changes. The catch is that there are four different ways to do it, and picking the wrong one (or missing one TV setting) is why so many people end up with no sound, or only weak stereo. This guide walks through every method in priority order, with the exact settings to change and a quick fix list when something doesn’t work.
How we put this together. We set up soundbars in real rooms across every major TV brand, so these steps reflect what actually works — not just the manufacturer’s idealized diagram. Where a setting’s name changes from brand to brand (and it always does), we’ve mapped the equivalents so you can find it on your own TV.
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Which connection should you use?
Before you reach for a cable, check what ports your TV and soundbar share and work down this priority list. HDMI ARC/eARC is the best option for almost everyone — one cable carries the audio and lets your TV remote control the soundbar’s volume. Use the others only when HDMI ARC isn’t available.
Method 1: HDMI ARC or eARC (recommended)
HDMI ARC (Audio Return Channel) sends audio from the TV back down a single HDMI cable to the soundbar, and it enables HDMI-CEC so your TV remote also controls the soundbar’s volume and power. eARC is the newer, higher-bandwidth version: ARC tops out around 1 Mbps and carries compressed 5.1 plus streaming Dolby Atmos (via Dolby Digital Plus), while eARC’s ~37 Mbps adds lossless Dolby TrueHD and DTS-HD Master Audio from 4K Blu-ray. For a deeper look, see our explainer on HDMI ARC vs eARC. ARC has been on essentially every TV since 2010; eARC is standard on most mid-range and better TVs from 2019 onward.
How to connect it:
- Power off both the TV and the soundbar.
- Find the HDMI port on your TV labeled “ARC” or “eARC” — only one port has it, often HDMI 2 or 3. Connect an HDMI cable there.
- Connect the other end to the soundbar’s HDMI OUT (TV-ARC/eARC) port (the exact label varies by brand).
- Power both back on.
- Enable HDMI-CEC on the TV (see the brand names below).
- Set the TV’s audio output to the soundbar — usually “Audio System,” “Receiver (HDMI),” or “External Speakers.”
- Set the TV’s digital audio format to Bitstream, Passthrough, or Auto — not PCM (this is the step most people miss; more below).
- Play something. If there’s still no sound, set the soundbar’s own input to “HDMI ARC.”
Method 2: optical (Toslink) cable
If your TV or soundbar lacks HDMI ARC, an optical cable is the next-best option. It reliably carries compressed surround up to Dolby Digital or DTS 5.1, with low latency and no lip-sync issues. Its limits: it can’t carry Dolby Atmos (neither the streaming nor the Blu-ray version), and it doesn’t pass HDMI-CEC, so your TV remote won’t adjust the soundbar’s volume.
- Find the port labeled “Digital Audio Out (Optical)” on the TV and the “Optical In” on the soundbar.
- Remove the small protective caps from both ends of the cable (a surprisingly common snag), then plug it in until it clicks.
- Set the TV’s audio output to “Optical” or “External Speakers.”
- Set the digital audio format to “Auto” or “Dolby Digital” — again, not PCM, so you keep 5.1 where available.
- Switch the soundbar’s input to “Optical” / “OPT.”
Method 3: Bluetooth (wireless)
Bluetooth is the cable-free option, best suited to casual listening rather than primary movie audio. The reason is latency: standard Bluetooth (the SBC codec) adds 150–300 ms of delay, which shows up as lips that don’t match the dialogue. Codecs like aptX Low Latency cut that to around 40 ms, but both the TV and soundbar have to support them.
- Put the soundbar in pairing mode — usually hold its Bluetooth button until the indicator flashes.
- On the TV, open Settings → Sound → Sound Output (or “Bluetooth Speaker List”) and scan for devices.
- Select your soundbar and confirm pairing.
- If audio lags behind the picture, look for an Audio Delay / A/V Sync slider in the TV’s sound settings and adjust until lips match.
Method 4: AUX or RCA (older TVs, last resort)
If a TV has no HDMI ARC, no optical, and no Bluetooth — typically a pre-2010 set — fall back to analog. Run a 3.5 mm cable from the TV’s headphone/audio-out jack (or an RCA-to-3.5 mm adapter from the red/white RCA outputs) into the soundbar’s “AUX In.” This is stereo only — no surround — so set the TV’s volume to roughly 50% and use the soundbar’s remote for the main level. Then set the soundbar’s input to “AUX.”
The TV settings that actually matter
Plugging in the cable is half the job. These four settings are where soundbars go silent or get stuck in weak stereo:
| Setting | Where to find it | What to choose |
|---|---|---|
| Audio output | Settings → Sound | Audio System / External Speakers / HDMI ARC |
| Digital audio format | Settings → Sound → Expert/Advanced | Bitstream / Passthrough / Auto (not PCM) |
| HDMI-CEC | Settings → General / System | On (see brand names below) |
| TV internal speakers | Settings → Sound | Off / Disabled |
HDMI-CEC has a different name on every brand. They all do the same thing — let your TV remote control the soundbar — so enable whichever one your TV calls it: Samsung Anynet+, LG SIMPLINK, Sony BRAVIA Sync, Vizio/Hisense/TCL/Philips usually just “HDMI CEC.”
PCM vs Bitstream is the sneaky one. If your soundbar plays sound but only in plain stereo, your TV is almost certainly set to PCM, which means the TV decodes the audio itself and sends a basic two-channel signal. Switch to Bitstream/Passthrough/Auto so the TV sends the raw encoded stream and lets the soundbar decode full Dolby Digital, DTS, or Atmos.
Troubleshooting: no sound from the soundbar
If you’ve connected everything and still have silence, work through these in order — they resolve the vast majority of cases:
- Confirm the right port. The cable must be in the HDMI port labeled ARC/eARC, not just any HDMI input.
- Enable HDMI-CEC (Anynet+ / SIMPLINK / BRAVIA Sync). Without it, ARC often won’t pass audio at all.
- Change the TV audio output from “TV Speakers” to “External Speakers” or “Audio System.”
- Check the soundbar’s input — set it to HDMI ARC / D.IN / Optical to match your cable.
- Power-cycle both devices. Unplug the TV and soundbar from power for 30 seconds; the CEC handshake often needs a clean restart.
- Try a different HDMI cable. A failing or non-high-speed cable is a common culprit for eARC dropouts.
- Update firmware on the TV and soundbar — ARC handshake bugs are frequently fixed in updates.
Connection methods compared
| Connection | Best for | Max audio quality | Remote volume sync? | Notes |
|---|---|---|---|---|
| HDMI eARC | Primary TV audio; home theater | Lossless Atmos, TrueHD, DTS-HD | Yes (CEC) | Needs eARC on both ends; ~37 Mbps |
| HDMI ARC | Primary TV audio; streaming | Streaming Atmos (DD+), 5.1 | Yes (CEC) | On nearly all TVs since 2010 |
| Optical | Fallback without ARC | Dolby Digital / DTS 5.1 | No | No Atmos; reliable, low latency |
| Bluetooth | Casual / wireless | Compressed stereo | No | Lip-sync lag unless low-latency codec |
| AUX / RCA | Older TVs only | Analog stereo | No | Last resort; no surround |
Frequently asked questions
Should I use HDMI or optical for my soundbar?
Use HDMI ARC or eARC if both your TV and soundbar have the port. It’s one cable, your TV remote controls the volume, and it’s the only option that carries Dolby Atmos. Choose optical only when HDMI ARC isn’t available — it works well but caps out at compressed 5.1 and can’t pass Atmos.
Why is there no sound from my soundbar over HDMI ARC?
Usually one of four things: HDMI-CEC is off (enable Anynet+, SIMPLINK, or BRAVIA Sync); the TV audio output is still set to the TV’s own speakers; the soundbar’s input isn’t set to HDMI ARC; or the cable is in a regular HDMI port instead of the one labeled ARC/eARC. Power-cycle both devices once the settings look right.
Do all TVs have HDMI ARC?
Nearly all TVs made since 2010 do, because ARC arrived with HDMI 1.4 in 2009. Look on the back panel for the HDMI port labeled “ARC” or “eARC/ARC.” Only very old sets (pre-2009) lack it, and those typically offer optical or RCA outputs instead.
Can I connect a soundbar without HDMI ARC?
Yes. Use an optical (Toslink) cable if your TV has a digital audio output — that gives you up to Dolby Digital 5.1. If there’s no optical port either, connect over Bluetooth (most modern TVs support it) or run a 3.5 mm AUX cable from the TV’s headphone jack to the soundbar’s AUX In.
Does an optical cable support Dolby Atmos?
No. Optical can’t carry Dolby Atmos in any form — its bandwidth maxes out at compressed 5.1 (Dolby Digital or DTS). Atmos needs Dolby Digital Plus (streaming) or Dolby TrueHD (Blu-ray), and only HDMI ARC or eARC can pass those.
Why do my TV speakers still play sound when the soundbar is connected?
The TV audio output is probably still set to “TV Speakers” — switch it to “External Speakers” or “Audio System.” If that’s already set, enable HDMI-CEC so the TV hands audio to the soundbar, then power-cycle both devices.
What audio output setting should I use on my TV for a soundbar?
Set the digital audio format to Bitstream, Passthrough, or Auto — not PCM. PCM sends only basic stereo, while Bitstream/Passthrough sends the encoded surround signal to the soundbar’s decoder, which is what unlocks full Dolby Digital, DTS, and Atmos.
The bottom line: reach for HDMI ARC or eARC first — it’s one cable, it carries the best audio including Dolby Atmos, and your TV remote handles the volume. Drop to optical, then Bluetooth, then AUX only as your ports require. And if sound won’t appear, it’s almost always HDMI-CEC or a PCM-versus-Bitstream setting, not a broken soundbar. Still shopping for the right bar? See our picks for the best soundbars, or step up to a full AV receiver if you’re building a bigger system.
