How to Connect Polk Soundbar to LG TV
If you want better dialogue, stronger bass, and a cleaner home theater setup, learning how to connect Polk soundbar to LG TV is the fastest upgrade you can make.
The right connection method depends on your TV ports, your Polk model, and whether you want the most reliable sound or the simplest setup.
What you need before you start
Before connecting anything, check the ports on both devices and gather the right cable.
Most Polk soundbars work with LG TVs through HDMI ARC, HDMI eARC, optical digital audio, or Bluetooth, but not every model supports every option.
- Polk soundbar with power cable and remote
- LG TV with available HDMI ARC/eARC or optical output
- High-speed HDMI cable if using ARC or eARC
- Optical audio cable if using digital optical
- Bluetooth support if pairing wirelessly
For the best sound quality and least hassle, HDMI ARC or eARC is usually the preferred method.
Optical is a strong backup if your TV or soundbar does not support ARC correctly.
Which connection method is best?
Each connection method has tradeoffs.
Choosing the right one depends on your setup and how much control you want over volume and power.
- HDMI ARC/eARC: Best for TV remote control, automatic power sync, and higher-quality audio support.
- Optical: Reliable and simple, but it usually does not support advanced audio formats or TV remote volume control in the same way.
- Bluetooth: Convenient and wireless, but it may introduce audio delay and is less ideal for movies or gaming.
How to connect Polk soundbar to LG TV with HDMI ARC
HDMI ARC, or Audio Return Channel, is the most common and dependable way to connect a Polk soundbar to an LG TV.
If both devices support ARC or eARC, this should be your first choice.
- Turn off the LG TV and Polk soundbar.
- Locate the HDMI port labeled ARC or eARC on the LG TV.
- Connect one end of the HDMI cable to the TV’s ARC/eARC port.
- Connect the other end to the HDMI ARC input on the Polk soundbar.
- Turn both devices back on.
- Use the LG TV settings menu to enable Simplink (HDMI-CEC) if available.
- Set the TV’s sound output to HDMI ARC or External Speaker.
Once configured, the TV remote should usually control the soundbar volume automatically.
This is one of the biggest advantages of HDMI ARC because it reduces the need for multiple remotes.
LG TV settings to check for ARC
Depending on your LG model, the menu labels may vary slightly.
Look for settings related to HDMI control and audio output.
- Simplink (HDMI-CEC): Enables device control over HDMI
- Sound Out: Select HDMI ARC or external speaker output
- Digital Sound Output: Set to Auto or Passthrough when available
- eARC Support: Turn on if both devices support it
If ARC does not work immediately, recheck the HDMI cable direction, confirm the cable is plugged into the correct ARC-labeled port, and restart both devices.
How to connect Polk soundbar to LG TV with optical cable
If HDMI ARC is unavailable or unstable, optical audio is a dependable alternative.
It transmits digital sound cleanly and is widely supported by LG televisions and Polk soundbars.
- Turn off both devices.
- Remove the protective caps from the optical cable ends, if present.
- Insert one end into the Digital Optical Out port on the LG TV.
- Insert the other end into the Optical In port on the Polk soundbar.
- Power on the TV and soundbar.
- Open the LG audio settings and choose Optical or External Speaker.
Optical connections are straightforward, but they may not carry some advanced surround formats that eARC can handle.
Still, for most TV viewing, they provide clear and consistent audio.
Common optical cable mistakes
- Forgetting to remove the plastic caps on the cable ends
- Plugging the cable into the wrong port on the soundbar
- Leaving TV speakers enabled while expecting soundbar audio only
- Using a damaged optical cable with bent connectors
How to pair Polk soundbar to LG TV with Bluetooth
Bluetooth is the easiest wire-free method, but it is best for casual use rather than performance-focused viewing.
It can be useful in apartments, temporary setups, or rooms where you want to avoid running cables.
- Switch the Polk soundbar to Bluetooth pairing mode.
- On the LG TV, open the sound or Bluetooth audio output settings.
- Select the soundbar from the list of available devices.
- Confirm pairing and test audio playback.
Bluetooth can be affected by distance, interference, and latency.
If you notice dialogue lag or unstable connection, switch to HDMI ARC or optical for a more reliable experience.
How to adjust LG TV audio settings after connecting
After you connect the soundbar, the LG TV may still default to its internal speakers or apply settings that reduce sound quality.
Adjusting the audio menu helps ensure the Polk soundbar performs as intended.
- Sound Out: Choose HDMI ARC, Optical, or Bluetooth depending on your setup
- AI Sound / Sound Mode: Use a mode that matches your content, such as Cinema or Standard
- Digital Sound Output: Try Auto, PCM, or Passthrough if audio is missing
- AV Sync Adjustment: Use this if lips and voices are out of sync
Some LG TVs include advanced processing features that can affect external audio.
If the sound seems delayed or artificial, test with enhancements disabled to see whether the Polk soundbar sounds more natural.
Why is there no sound after connection?
If you connected everything correctly but still hear nothing, the issue is usually a setting, port mismatch, or cable problem.
The good news is that most no-sound issues are easy to fix without replacing hardware.
- Confirm the soundbar is powered on and set to the correct input
- Check that the LG TV audio output is set to the same connection type
- Verify the HDMI cable is in the ARC/eARC port, not a standard HDMI input
- Test another cable if using optical or HDMI
- Restart both devices after changing audio settings
- Make sure TV speakers are not overriding external speaker output
If your Polk soundbar supports firmware updates, installing the latest version may also resolve HDMI handshake or compatibility problems.
How to fix audio delay or lip sync issues
Audio delay is more common with Bluetooth, but it can also occur on HDMI ARC if the TV processing is heavy or the devices are not fully synchronized.
LG TVs often include a built-in AV sync control that can help.
- Open the LG TV sound settings
- Find AV Sync Adjustment
- Increase or decrease the delay until voices match the on-screen action
- If using Bluetooth, reduce interference and keep the soundbar close to the TV
For movie watching and gaming, HDMI ARC or eARC usually delivers the best sync performance.
Optical is also stable, though it may require manual adjustment depending on the model.
When should you use eARC instead of ARC?
eARC, or enhanced Audio Return Channel, is an upgraded version of ARC that supports more advanced audio formats and higher bandwidth.
If your LG TV and Polk soundbar both support eARC, it is worth enabling.
Use eARC when you want:
- Better support for Dolby Atmos-compatible content
- Improved audio format handling
- More dependable TV-to-soundbar communication
If one device supports only ARC, the connection will typically fall back to standard ARC behavior.
In that case, the setup still works, just with fewer advanced audio capabilities.
Best practices for a clean Polk and LG setup
A few simple habits can make the system easier to use and more reliable over time.
These are especially helpful if multiple people use the TV or if you frequently switch input devices.
- Label your HDMI cable so you know which port is for ARC
- Keep the soundbar firmware updated if the manufacturer offers updates
- Use the TV remote when HDMI CEC is enabled for easier volume control
- Place the soundbar directly below the TV for clearer dialogue alignment
- Avoid bending optical cables sharply, since they can lose signal quality
With the correct connection method and the right TV settings, a Polk soundbar can significantly improve an LG TV’s audio without adding complexity.
HDMI ARC is usually the best starting point, optical is the most reliable backup, and Bluetooth is the simplest wireless option for lighter use.