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120W 2.1ch Sound Bar Audio System with Subwoofer and Bluetooth® Connectivity

  • NB2540

Key Features

  • Bluetooth®
  • 3D Surround Processor
  • Wall Mount Included


Wirelessly stream music directly from your smartphone or other compatible device to your LG Sound Bar for a seamless listening experience.

3D Surround Processor

3D Surround Processor

Put yourself in the middle of all the action with LG's onboard 3D Surround Processor, which creates a room-filling surround sound experience for movies, TV shows and more.

Wall Mount Included

Wall Mount Included

Sometimes the wall is the best location for your LG sound bar, if for example your TV is wall-mounted and you want to place the speaker directly beneath. Luckily, handy mounting hardware is included.

Channels 2.1
Total Power 120W
Automatic Power on/off Yes
Sound Sync (with LG TV) Yes
Front 25W x 2
Subwoofer 70W (wired)
Standard (By pass) Yes
Cinema (Movie) Yes
Music (Natural) Yes
D.Loud(Loudness) Yes
Dynamic Range Control Yes
Auto Volume Leveler Yes
DTS 2.0 Yes
Dolby® Digital Yes
Wireless Audio Streaming via Bluetooth® Yes
Wireless Sound Sync Yes
Optical Input Yes
Portable Audio In (3.5mm) Yes
Remote Control Yes
Batteries 2 (Size AAA)
Optical Cable Yes
Wall Mount Bracket Yes
Power Consumption 21W
Standby 0.5W
TV Matching 42" and above
Subwoofer (W x H x D) 6.1" x 11.8" x 11.6"
Net Weight 11.6 lbs
Shipping Weight 16.0 lbs
Limited Warranty 1 Year Parts and Labor
UPC 719192592513

What People Are Saying

Rated 5 out of 5 by from Great! My husband and I bought this right after the birth of my son over a year ago (much to my displeasure.) Boy was I surprised! This soundbar adds so much more volume to our living room. It feels like you are experiencing what your watching, not just hearing it. Bravo LG!
Date published: 2016-01-19
Rated 1 out of 5 by from It Blocks TV's Infrared Receiver The sound quality is good. But, When put it front of my 47lb652v TV it blocks the TV's infrared receiver. I had to put it behind the TV. Not a great design.
Date published: 2015-09-01
Rated 4 out of 5 by from Sounds nice - problem with UB8200- blocks remote I bought this to enhance the sound of my 55ub8200 -4K (great picture). 10 minute install but when placed in front of the 8200 it blocks the remote signal. I'm going to need to find some way to lift the tv by about 2 inches. Sound is now much better. I guess that the TV sound was missing some good bass
Date published: 2015-04-23
Rated 4 out of 5 by from The sound bar sounds better than any for the price It's has great sound and very easy to sat up.The wifi works with any thing you have with wifi.Buy it,you won't be sorry.
Date published: 2015-03-08
Rated 4 out of 5 by from Great Product I had an expensive sound bar for a couple years that suddenly stopped working. (made by another company) I searched for a high quality but affordable replacement and found this one. I listened to it at the store and brought it home. I highly reccommend for value and sound quality. I especially like the easy to use and very intuitive remote control. To be honest, the sound is not quite as great as the expensive previece one that I had for for the cant do better. I am very happy with thi sound bar.
Date published: 2015-02-27
Rated 5 out of 5 by from Sound Bar Audio System with Subwoofer /Blue Tooth I had brought this for my sister for a Christmas gift. I like it so much, I went and brought one for myself. It was so simple to put together. I use it all the time. I keep the volume down on my TV. I like when I turn on my TV, it automatically comes on.
Date published: 2015-02-08
Rated 5 out of 5 by from Awesome product does everything lg says,great product for the price, would definitly buy from lg again
Date published: 2015-01-19
Rated 3 out of 5 by from Works OK but should buy the next model up This sound bar works fine and I have had no problems with it. However, being the low end model, it does not sound much better than the stock speakers on my 42" LG TV. The mids and highs are about the same (modest improvement) and the bass is slightly improved due to the small but still undersized subwoofer. The LG TV and DVD remotes will not control the sound bar, requiring the use of multiple LG remotes, which is a major downside. While I guess I can't really complain for the price (it is pretty cheap after all) you can spend a few more dollars and get a much better LG sound bar. If anything, I'd have to say the speakers on my LG TV are rather good for a smallish flat screen and maybe that's why I can't really appreciate this sound bar. That being said, I have a different sound bar on another TV that cost $70 more that is much (like 10 times) better: room filling sound, crisp highs, clear mids, and heart pounding bass which are absent in this model. Nothing against LG, but I'd recommend buying the next model up. You wouldn't be spending much more and you'd be getting a much better sounding product.
Date published: 2014-12-31
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We're here to support you with our product.

View NB2540 Product Support

Contact us for any support inquiries.


Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

Hi after moving house my nb2540 soundbar isn't working, I suspect the optical audio cable is the problem as power is OK etc, can I buy a new cable? 

Asked by: Mariapatricia
I've had the same problem myself and the easiest solution would be to  stop on your way home from work at Radio Shack.
Answered by: Nikki 725
Date published: 2016-10-05

The remote for this product used to control my tv as well as the sound bar but has since stopped working. Is there a way to reprogram it so it will control the tv again?

Asked by: Chris1031
Thanks for asking, however the remote was not designed for reprogramming. Therefore it would be in your best interest to come see us for an upgrade.
Answered by: Nikki 725
Date published: 2016-10-04

My I phone use to connect to the sound bar system I went to use it this morning and it will not even pair with my sound bar... What do I do?

Asked by: Sam3945
Our offices, in the United States, do not have specific product information units released in the United Kingdom. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2016-07-11

I have LG NB2540 sound bar connected to LG 42PN4500 Plasma tv. Everything was working fine till last Sunday, on Monday when I tried to operate TV using sound bar remote it is not working anymore. Though the sound bar remote is working fine on sound bar.

Asked by: Tanmay
Our offices, in the United States, do not have any product information for India. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2016-04-05

This soundbar never seemed quite right...but especially with the remote that came with it. Now, it won't respond to the remote at all...yes, I changed the batteries. Does anyone know how to reprogram the remote?

Asked by: carlabree1
We regret the inconvenience you have experienced with this Sound Bar system. The remote control is not designed to be programmable for its own player. As such, if the remote control does not operate, and the batteries are not the cause, then the remote control may need to be replaced, or the system may require service. Please contact our Customer Interactive Center at 800-243-0000 for assistance in this matter.
Answered by: NeilE
Date published: 2016-02-26

Is it possible to connect wireless headphones to the sound bar? I would love to be able to hear what I'm watching while on my treadmill.  If yes are there certain requirements to I should be looking at when purchasing having my headphones?

Asked by: Jd3b
Our offices, in the United States, do not have product information for Canada. In order to obtain such information, it is recommended to check our subsidiary’s website, at You may also contact our Canada offices at 1-888-542-2623.
Answered by: NeilE
Date published: 2016-02-23

Recently bought an LG NB2540 with optical cable but my LG tv42LD420 has no optical out. How do I link the two?

Asked by: Dubmaster
Our offices, in the United States, do not have product information for South Africa. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2016-01-01

I need to purchase the cables for the lg nb2540, what is the part number?

Asked by: Jpereyra12
We appreciate your interest in this Sound Bar system. This model is designed to utilize the audio wires built into the Subwoofer, and a standard Optical Cable, to connect to the TV.
Answered by: NeilE
Date published: 2015-10-02
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