Connect Soundbar With LG TV — HDMI ARC, Optical, Bluetooth & Sound Out Settings
Connect soundbar with LG TV is usually easy once the TV is using the right Sound Out setting, but LG menus can make a good cable look broken.
The most reliable order is simple: use HDMI ARC or eARC first when both devices support it, use optical when ARC is unavailable or unstable, and use Bluetooth only when wireless convenience matters more than lip sync and daily reliability.
Most failures come from three small mismatches.
The HDMI cable is not in the LG port labeled ARC or eARC, the soundbar is listening to the wrong input, or the LG TV is still set to internal speakers instead of the external audio device.
Fix those in order and you’ll usually get sound back without resetting everything or replacing the soundbar.
To connect a soundbar with an LG TV, use HDMI ARC or eARC first if both devices have it.
Connect the LG TV’s ARC/eARC HDMI port to the soundbar’s TV ARC, HDMI OUT, or eARC/ARC port, then set LG Sound Out to HDMI ARC or external audio device.
Turn on Simplink when using ARC, set Digital Sound Out to PCM for basic troubleshooting, then try Auto or Pass Through only after sound works.
If ARC keeps failing, use optical as the stable fallback and set Sound Out to Optical or Optical/HDMI ARC depending on your LG menu.
What Is The Best Way To Connect A Soundbar With An LG TV?
The best first choice is HDMI ARC or eARC when the LG TV and soundbar both support it.
ARC sends TV audio back to the soundbar over HDMI and can also allow the LG remote to control volume when Simplink is working.
That makes it cleaner than optical for daily use.
The port labels matter more than the cable shape.
On the LG TV, use the HDMI port labeled ARC or eARC.
On the soundbar, use the port labeled TV ARC, HDMI OUT, ARC, or eARC/ARC.
Do not plug the TV into a normal soundbar HDMI input meant for streamers or game consoles unless the soundbar manual tells you that port handles TV return audio.
If your TV or soundbar does not have ARC, use optical.
Optical is still a strong wired connection for basic TV sound, dialogue, and standard surround formats.
It just does not carry TV-remote control or newer high-bandwidth sound formats.
If neither wired method is practical, Bluetooth can work.
Use it for simple wireless audio, not for the most stable movie or gaming setup.
On Samsung, Sony, TCL, or Vizio TVs, the same ARC-first, optical-fallback order applies — only the Sound Out menu labels change.
This LG guide focuses on the Sound Out, Simplink, eARC, and Digital Sound Out settings that make LG setups succeed or fail.
How Do You Connect An LG TV To A Soundbar With HDMI ARC Or eARC?
Turn off the LG TV and soundbar before you wire the first test.
Connect one HDMI cable from the LG TV port labeled ARC or eARC to the soundbar port labeled TV ARC, HDMI OUT, ARC, or eARC/ARC.
Turn on the TV first, then the soundbar.
Set the soundbar input to TV ARC, eARC, HDMI ARC, or the equivalent TV input.
Then open the LG settings menu and go to Sound.
Choose Sound Out and select HDMI ARC, wired speaker, external speaker, audio system, or the menu label your LG model uses.
On many LG TVs, the setting may read HDMI(ARC) Device, Optical/HDMI ARC, or Wired Speaker.
After selecting the output, turn on Simplink if it is not already on.
Simplink is LG’s HDMI control feature, and ARC behavior often depends on it.
If your LG TV and soundbar both support eARC, turn eARC support on or set it to Auto.
Do not start troubleshooting with every advanced sound format enabled.
First prove that basic audio works.
A known-good HDMI 2.1 cable that supports ARC or eARC is a good baseline when the old cable is unknown.
The cable will not fix the wrong port or wrong Sound Out setting, but it removes one common weak point.
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LG Sound Out decides where the TV sends audio.
If Sound Out stays on Internal TV Speaker, the soundbar can be wired correctly and still stay silent.
For HDMI ARC, choose HDMI ARC, HDMI(ARC) Device, Wired Speaker HDMI, Optical/HDMI ARC, or the closest external audio label on your model.
For optical, choose Optical, Optical Out, Optical/HDMI ARC, wired speaker optical, or external speaker.
The wording changes across WebOS versions, but the job is the same.
The TV must stop using its own speakers as the only output.
Next, check Digital Sound Out.
Use PCM when you are troubleshooting silence because almost every soundbar can decode PCM.
After audio works, try Auto or Pass Through if the soundbar supports Dolby Digital, Dolby Atmos over eARC, or other surround formats.
Do not assume Pass Through is always the first setting to use.
It can send a format the soundbar does not understand, which creates silence even when ARC is connected correctly.
If PCM works and Pass Through fails, the issue is sound format compatibility, not the HDMI cable.
If Pass Through works only with some apps, the source app or external device may be sending a different audio format.
PCM hands the bar a pre-decoded stereo or surround track, while bitstream sends the raw codec for the bar to decode — which is why a Pass Through that breaks Netflix but not YouTube usually points to a codec the bar cannot handle, not the cable.
If Simplink as a name is throwing you off, the brand-neutral ARC enable sequence — port label, HDMI-CEC under any vendor name, Sound Out set to the external device works as a clean checklist.
How Do You Connect An LG TV To A Soundbar With Optical?
Use optical when HDMI ARC is missing, unreliable, or not worth debugging today.
Connect a TOSLINK optical cable from the LG TV Digital Optical Out port to the soundbar Optical In port.
Remove the plastic caps from the cable ends before plugging it in.
Set the soundbar input to Optical, OPT, Digital In, or D.IN.
Then open LG Sound Out and choose Optical, Optical/HDMI ARC, wired speaker optical, or external speaker depending on your menu.
Set Digital Sound Out to PCM for the first test.
If sound works, you can try Auto later for surround formats your soundbar supports.
Any reliable TOSLINK optical cable is enough for this setup.
Optical is audio only.
It will not give the LG remote the same soundbar volume control that ARC can offer.
Some soundbars can learn LG remote IR commands, but that is a soundbar feature, not an optical-cable feature.
If you hear both TV speakers and soundbar at the same time, turn off internal TV speakers or choose the external output only.
If optical works immediately and ARC does not, the soundbar is probably not dead.
The failure is more likely the LG ARC port choice, Simplink, eARC mode, Digital Sound Out, or a handshake problem.
Can You Connect A Soundbar To An LG TV With Bluetooth?
Bluetooth can connect an LG TV to a soundbar when both devices support it.
Put the soundbar in Bluetooth pairing mode, open the LG Sound Out or Bluetooth device menu, then choose the soundbar from the device list.
If the TV asks whether to use the Bluetooth audio device, confirm it.
Bluetooth is convenient, but it is not the best first choice for movies or games.
It can add delay, compress the sound, and disconnect more easily than HDMI or optical.
Use Bluetooth when the room layout makes cables difficult or when the soundbar is used casually.
If your LG TV cannot send Bluetooth audio or pairing keeps failing, an external transmitter can help only when it receives the right audio output from the TV.
A line-level Bluetooth transmitter can bridge some older or awkward setups, and budget transmitters do the same job at a lower cost for casual TV audio.
If Bluetooth is only being used because ARC failed, test optical before buying a transmitter.
Optical is usually more stable, cheaper, and better for lip sync.
The pairing flow on Samsung, Vizio, and TCL TVs follows the same pattern as LG once both devices are in pairing mode — if wireless is the final choice, the brand-neutral steps are short.
Why Is The LG TV Not Playing Through The Soundbar?
Start with the soundbar input.
If the soundbar is on Bluetooth while the TV is connected by HDMI ARC, there will be no TV sound.
If the soundbar is on HDMI while the cable is optical, the same problem happens.
Next, check LG Sound Out.
The TV must be set to HDMI ARC, Optical, Optical/HDMI ARC, wired speaker, or external audio depending on the connection.
If it is still set to Internal TV Speaker only, the soundbar may never receive audio.
Then check Simplink for ARC.
Turn it on, power-cycle the TV and soundbar, and test again with a built-in TV app.
A built-in app is the cleanest test because it proves whether the TV itself can send audio to the bar.
After that, check Digital Sound Out.
Use PCM for the first no-sound test.
If PCM works, then Auto or Pass Through can be tested later.
If PCM does not work, the issue is probably not just a format mismatch.
Reseat the cable, confirm the port labels, and unplug both devices from power for one minute.
Reconnect the TV first, then the soundbar.
If ARC still fails, try optical as a proof test.
If optical works, the soundbar hardware is probably okay and the ARC handshake is the issue.
If every connection fails, swap the bar onto a known-good audio source — a phone over Bluetooth, a streaming stick over HDMI, or any TV that is not the LG before assuming the LG settings are the problem.
If the bar behaves strangely after settings changes, a soft reset clears stuck EQ presets and input-locking quirks without wiping pairings — try that before a full factory reset that loses Wi-Fi credentials and connected device lists.
If the LG TV connection completes but the bar still drops out, distorts, or fails on the subwoofer, the LG-specific fault-isolation pass — Simplink reset, eARC mode toggle, Digital Sound Out PCM test, subwoofer re-pair, sound-mode reset is the next page after this setup is correct.
Why Is LG Soundbar Audio Delayed, Stereo Only, Or Too Quiet?
Audio delay usually comes from processing or a mismatch between the source, TV, and soundbar.
Turn off extra TV sound processing first.
Disable heavy virtual surround, volume leveling, and dialogue modes during the test.
Then check whether the soundbar has a lip-sync or audio-delay setting.
Start at zero and adjust slowly.
Stereo-only audio usually comes from the Digital Sound Out setting or the source device.
PCM may be stereo in many setups, which is why it is safest for proving sound but not always the best final setting for surround.
If the soundbar supports Dolby Digital over ARC or optical, try Auto after PCM works.
If the soundbar and LG TV support eARC, try Pass Through only after basic sound is stable.
Too-quiet sound is less common over HDMI or optical than over analog, but it can happen when the soundbar is in the wrong sound mode or when the app output is limited.
Test a built-in streaming app, an HDMI source, and live TV separately if available.
Change one variable at a time.
Do not switch cables, sound format, app source, soundbar mode, and TV output all in the same test.
If the issue appears only with one external device, the LG TV and soundbar connection may be fine.
The problem may be the streamer, console, or cable box audio setting.
A regular HDMI port on the bar accepts audio from the source while the ARC/eARC port sends audio back from the TV — confusing the two ports is the most common reason a console plays through some apps but not others.
Should You Use The Same Brand Soundbar With An LG TV?
You do not need an LG soundbar just because you have an LG TV.
Brand matching can make some control features, app prompts, or setup labels feel cleaner, but the main connection rules are still port-based.
An LG TV can work with Samsung, Sony, Vizio, Bose, Sonos, JBL, Yamaha, Polk, and many other soundbars when the connection type matches.
What matters first is whether both devices support HDMI ARC or eARC, optical, or Bluetooth.
Then check which sound formats the soundbar can decode.
A basic bar may connect perfectly but still receive only stereo or standard Dolby Digital.
A higher-end bar may need eARC to get its best sound from newer sources.
If your LG TV has eARC and the bar supports eARC, use that setup first.
If your LG TV is older or the bar is simple, optical may be the more stable real-world setup.
Brand choice should come after connection fit, room fit, and the soundbar’s actual format support.
HDMI ARC carries Dolby Digital, Atmos via eARC, and remote control; optical carries Dolby Digital and stereo but drops Atmos and CEC entirely — that tradeoff matrix decides which port is worth the debugging time.
If your LG model is the C4 specifically, the OLED-tuned picks line up against its WOW Orchestra and DTS:X passthrough capability rather than generic LG matching.
LG-Aligned And Cross-Brand Soundbar Picks
If you do want to lean on LG’s own ecosystem for the cleanest Simplink and WOW Orchestra behavior, two LG bars stand out at different price points.
The LG S60T 3.1 ch Soundbar with Wireless Subwoofer is the LG-aligned mid-tier pick that keeps the menu prompts and remote control consistent with the TV.
LG S60T 3.1 ch Soundbar with Wireless Subwoofer
For a smaller, budget-tier LG bar that still pairs cleanly with LG TV menus, the LG S20A 2.0 ch Soundbar covers a bedroom or small living-room LG setup without overspending.
LG S20A 2.0 ch Soundbar
If you do not need brand alignment and want the strongest Dolby Atmos performer in the list, the Sonos Arc Ultra Soundbar with Dolby Atmos and Voice Control is the premium cross-brand pick that still works cleanly over eARC on a new LG OLED.
Sonos Arc Ultra Soundbar with Dolby Atmos and Voice Control
For a 5.1-channel cross-brand pick at a moderate price, the ULTIMEA 5.1CH Surround Sound Bar with Subwoofer is a strong value alternative for movie nights on an LG TV.
ULTIMEA 5.1CH Surround Sound Bar with Subwoofer
A compact 3.1-channel pick is the Amazon Fire TV Soundbar Plus with built-in subwoofer when the LG TV pairs with a Fire TV stick and you want a unified streaming experience.
Amazon Fire TV Soundbar Plus with built-in subwoofer
The Bottom Line
Connect a soundbar with an LG TV by choosing the connection first and then matching LG Sound Out to that connection.
Use HDMI ARC or eARC when both devices support it.
Turn on Simplink, choose the correct LG Sound Out option, and use PCM first if you are troubleshooting silence.
Use optical when ARC is missing or unreliable.
Set the soundbar to Optical or D.IN and choose optical output in the LG menu.
Use Bluetooth only when wireless convenience is worth the tradeoff in delay and stability.
If the setup fails, do not replace everything at once.
Check the port, soundbar input, LG Sound Out, Simplink, Digital Sound Out, then power-cycle in that order.
If you need the wider TV setup map, the LG-aligned soundbar picks ranked by eARC, Simplink, and WOW Orchestra integration show which bars actually leverage LG’s features, and the soundbar hub is the broader cluster starting point.
Frequently Asked Questions
How do I connect my LG TV to a soundbar?
Use HDMI ARC or eARC first if both devices support it.
Connect the LG ARC/eARC port to the soundbar ARC/eARC port, set LG Sound Out to HDMI ARC or external audio, and turn on Simplink.
Why is my LG TV not recognizing my soundbar?
The most common causes are using a non-ARC HDMI port, leaving Sound Out on internal speakers, keeping Simplink off, or leaving the soundbar on the wrong input.
Test with a built-in LG TV app after changing those settings.
Should LG Digital Sound Out be PCM, Auto, or Pass Through?
Use PCM first when troubleshooting because it is the safest basic format.
After sound works, try Auto or Pass Through if your soundbar supports the formats your LG TV is sending.
Can I connect a soundbar to an LG TV with optical?
Yes.
Connect LG Digital Optical Out to the soundbar Optical In, select Optical on the soundbar, and choose optical or external output in LG Sound Out.
Can an LG TV use a non-LG soundbar?
Yes.
An LG TV can work with most soundbar brands as long as the ports and settings match.
What matters more is HDMI ARC, eARC, optical, and Bluetooth support.
