How To Pair LG Soundbar To Subwoofer? [Step-By-Step Guide]

Let’s face it: you didn’t buy a fancy soundbar to get an average speaker sound.

So how do you get that real home theater experience?

The answer comes down to one element:


Some soundbars now come all-in-one, with low, mid, and high frequencies. But if you’re looking for that intense, loud, thumping sound coming out of your speakers, you might one to pair your device with a subwoofer.

How? We’re here to guide you through it:

How to Pair LG Soundbar With Subwoofer? [Step-By-Step Guide]

Let’s start with some good news:

Modern soundbars are extremely easy to connect with subwoofers.

In a lot of cases, you won’t even need a cable. Many products, like the LG soundbar, now offer wireless or Bluetooth connections.

We’ve also thought a few steps ahead:

What should you do if you have a troubleshooting issue?

Will it be possible to repair if the connection is lost?

Don’t worry, we’ve got you covered!

How to pair LG soundbar to the subwoofer (first setup)

Once you’ve bought your soundbar with its subwoofer, you’ll want to pair your devices right away.

The good news is, if everything goes according to plan, it should be quite easily done and take you less than a minute.

Step 1: Placing your LG soundbar and subwoofer

To ensure a proper wireless connection, you’ll need to be careful when placing your devices.

Here are a few things to keep in mind:

Keep the soundbar and the subwoofer close to each other. If they’re separated by more than 15 feet, or 4.5 meters, the connection would be quite as strong. Worst: the devices might not recognize each other and pair at all.

Avoid putting obstacles between your devices. This could contribute to weakening the signal.

Make sure there are no interfering signals. This could for example be the case if you’re running a game on a LAN network. You should also avoid setting up near a router or microwave.

The perfect spot for a soundbar

For high-resolution audio, you’ll need to consider two factors when placing your LG soundbar:

  1. Make sure you pick an unobstructed spot. It isn’t recommended to put magazines, books, or any other household item placed in front of your speakers.
  2. Try having the soundbar at the same level as your ears. Take into consideration when and how you’ll be watching TV: sitting on your couch, on the ground, on a chair, etc. Having your LG soundbar placed at ear level will help you get the best possible sound without blasting your volume and making it too loud.

The perfect spot for a subwoofer

When it comes to your subwoofer, you can test and try a few different possibilities.

The main focus will be getting the deepest audio experience. Subwoofers are often placed in corners, in order for the sound to go around the room.

One trick you can use is putting the subwoofer where you’ll be watching TV, then walking around the room and seeing where the sound comes out best.

Step 2: Turning on your LG soundbar and LG subwoofer

Once you’ve placed your devices, setting up is a piece of cake.

Plug in your soundbar with the power cord. Next, do the same for your subwoofer.

Press the power button on your LG soundbar. A red LED will start flashing. On your subwoofer, you’ll see a blinking green LED.

If everything goes according to plan, the two devices should connect automatically. If it works, you’ll see that the LED on your LG subwoofer will stop blinking. Be a little patient: it can take up to a minute before the Bluetooth connection is established.

You can now enjoy your home theater!

The devices didn’t connect automatically?

No worries, there’s a quick fix. By following these few steps, you’ll easily pair your LG soundbar and subwoofer.

Step 1: Making your soundbar detectable

You’ve connected your soundbar to your TV, phone, or computer. You hear sound coming out. Good! All you need now is to get your subwoofer working.

Here’s the first thing you’ll need to do:

Turn off the volume.

Next, you’ll have to press and hold the mute button on your LG soundbar’s remote control for 3 seconds. With some soundbars, you’ll have to press and hold at the same time the “Stop” button which you’ll find on your device.

Once that’s done, you’ll see a message appear on the soundbar’s LED screen: “W Reset”. At this point, you can switch your focus from the speakers to the subwoofer.

Step 2: Making your subwoofer detectable

When it isn’t connected, you’ll see the LG subwoofer blinking red. To resolve this, take a look at the back of your device.

On the top right corner, you’ll see a small red button surrounded by a white square. That’s the pairing button. To click onto it, your nails might not do the trick. Grab a paperclip, toothpick, or any other pointy tool. Nothing too sharp though, you don’t want to scratch your subwoofer!

Press and hold for a few seconds. If successful, you’ll see blinking red and green LED lights.

Step 3: Disconnect the power cord on the subwoofer and soundbar

This step might seem counter-intuitive, but yes:

You will need to unplug the power cord on your LG soundbar and the subwoofer.

Do this for a few seconds only and plug them back in. Click on the soundbar’s power button. With the power on, the soundbar screen will display a “welcome” message.

Now look at your subwoofer, and check one thing:

Has the LED stopped blinking and is it now a constant green?

If so, you’re good to go!

How to re-pair the LG soundbar with a subwoofer?

Has the Bluetooth connection been completely lost between your soundbar and subwoofer? This doesn’t mean your devices can’t be used anymore.

Using a process similar to the one which helped you connect your devices manually, you’ll be able to re-establish the connection.

One common problem is the subwoofer never pairing with the soundbar, and the LED continually blinking. We’ll help you get rid of this issue.

Step 1: Enable the wireless connection on your soundbar

You’ve unplugged your subwoofer and your soundbar as indicated earlier on.

But somehow, your devices still aren’t pairing!

What to do with your soundbar

Proceed as you did before:

Take your remote control. Press and hold the mute button, for three seconds approximately.

Now take a look at your soundbar. It may have a square button, next to the play/pause. Press and hold that one as well.

Two elements should appear on your screen:

  1. A message that says “Remate”.
  2. A “wireless” symbol, similar to the one you’d find for a Wi-Fi network.

Step 2: Pairing the subwoofer

Once you’ve activated the wireless mode on your soundbar, you’ll repeat the usual process with the subwoofer.

The LED will be blinking red and green. Press and hold the pairing button. Unplug and reconnect the power cord. Power it up.

If the light still flashes green, repeat this process as many times as necessary.

How to fix recurring pairing issues between LG soundbar and subwoofer

Even once properly installed, a device can always have some sort of a troubleshooting issue. If re-pairing or manually connecting your two devices still doesn’t do the trick, some reparations may be in order.

We’ll also give you some pointers if you feel like the sound coming out of your devices isn’t quite right.

Step 1: replacing the Bluetooth device on your subwoofer

You’ve tried everything and still can’t figure out a way to pair your devices?

If you feel handy, you could go for some do-it-yourself reparations.

With a screwdriver, look at the back of your subwoofer. Remove the screws near the pairing button.

Once you’ve removed the panel, you’ll see a small black box with a Bluetooth symbol on it. An improper cable connection might be what’s creating the problem.

Step 2: adjusting the bass level

Too much bass can muddy the sound. Not enough low frequencies might lead to a frustrating audio experience.

How can you find the perfect balance?

Ultimately, it’ll depend on your personal audio preferences and what type of content you’re enjoying on your LG soundbar. Different styles of music, movies, or TV shows will call for more or less high and low frequencies to get the most out of your experience.

Grab your remote control.

On the lower left-hand corner, you’ll see a sound tuning button. It’s made out of three vertical lines and squares.

How to find the perfect balance

Once you’ve clicked, you’ll be able to navigate through four settings on your soundbar:

  1. R: This controls the sound level of your rear speakers, if applicable
  2. C: This controls the sound level of your center speaker, the one directly placed in your soundbar
  3. Treble: This will control the high and mid frequencies
  4. Bass: This will determine the volume for your subwoofer

Levels can be adjusted from -5 to 5. The default setting is to have them all at 0. Use this with precaution: even though pushing your low frequencies as far as possible can be fun, it’ll eventually make it impossible to distinguish different notes and therefore lessen your audio quality.

Step 3: Bluetooth, optical, and HDMI connection

Once you’ve paired your subwoofer and LG soundbar, you’ll want to start watching a film on your TV or listening to some of your favorite songs.

Connecting your devices to your sound system will also be done easily. Do note that the subwoofer and soundbar are connected together to other Bluetooth devices, and not separately.

Connecting your soundbar to a Bluetooth device

If you’re using your soundbar to listen to audio coming from your phone or computer, you’ll want to use the Bluetooth connection.

Open the Bluetooth menu on your device. Press the function button on your remote control and scroll until it says “BT” on your soundbar. Your soundbar should then appear amongst the available devices.

Connecting to a television using an optical cable

Your LG soundbar will come with a cable you may have never seen before.

This is called an optical cable. It’ll help you connect your soundbar and subwoofer to your TV. Behind your TV screen, you should see an “optical out” port. Plug one end of the cable in, and the other on the “optical in” port which you’ll find right on your soundbar. The sound from your screen should now be coming out from your soundbar.

How to use the HDMI ARC connection

The last option in terms of connection will be HDMI ARC.

This is the newest form of technology to connect both the soundbar and subwoofer to other devices.

Again, the process is extremely simple:

Grab an HDMI cable. Look at the back of your television screen for an “HDMI ARC In” port, and insert. Put the other end into the “HDMI ARC Out” port on your LG soundbar.

Beware of two common mistakes:

  1. HDMI Arc can only be used with compatible television. This will usually be the case for newer products, but won’t work with an old screen.
  2. Be careful not to confuse the “HDMI ARC In” port with the other “HDMI In” on your television. The second one is intended to be connected to a computer, DVD player, or other devices.


There’s one thing we can get out of this process:

Pairing your LG soundbar and subwoofer probably won’t be complicated at all!

At the end of the day, all you’ll need to do is properly place your devices and make sure not to lose your remote control. If you do, you might need to order a new one.

Barring this unfortunate scenario, you’ll very quickly get high-resolution audio with a wireless connection between your soundbar and subwoofer.

A system that’s convenient, clutter-free, easy to use and install.

Anita Jones