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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.

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

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
Our offices, in the United States, do not have specific product information units released in Glasgow. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2015-12-30

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: 2015-11-05

My sound bar remote stopped working. It has brand new batteries, no water damage, nothing. Just didn't work one day. Do you know what could possibly be the problem? Have had this system for less than a year. Also, do I have to buy a new remote?

Asked by: Tana_Anna
We regret the inconvenience you have experienced with this Sound Bar system. Even though new batteries have been installed, it is recommended to try another set, as sometimes bad batteries can be distributed. If a digital camera / camera phone is available, aim the remote control LED toward the lens, and check the unit through the viewfinder. Press a button on the remote control and see if the LED blinks. If it does not, then the remote control may require replacement. If it does, then the Sound Bar may be having trouble with receiving the signal. Please contact our Customer Interactive Center at 800-243-0000 for additional assistance in this matter.
Answered by: NeilE
Date published: 2015-10-01

sound bar

Does the sound bar connect directly to your LG plasma TV? Or does it need to connect to a DVD player for sound?
Asked by: sammynoorani786
Look in the back of yout TV. If there is an 'OPTICAL OUT AUDIO' jack (square with a hinged door) the sound will come out from the TV directly to your SOUND BAR.
Answered by: Patico
Date published: 2015-09-04

Can soundbar be controlled by tv?

Seeing that soundbar used Optical Cable to connect, if hooked to an LG TV can it be controlled by changing the sound on the tv?
Asked by: MnstrMike
No, this particular sound bar must be used with its own remote. Turn your TV volume to the lowest setting on your TV remote, then use the sound bar only to control volume
Answered by: BradCoath1
Date published: 2015-02-28

connecting the bass speaker to the sound bar

what sort of connection is required to connect the bass speaker with the sound bar? does it use speaker wire? i keep seeing red and black connectors on the back of the bar, but nothing is ever mentioned about the base speaker. also, if it does require speaker wire, is the wire included with purchase of speakers like the optical cable is? or does the bass speaker run off of wireless technology, and doesnt require any wires/cables at all to connect other than a power cord?
Asked by: Anonymous
You have to use the wires that came in the box to hook it to the sound bar. No, it don't not work wireless. The sound bar system can work via bluetooth but the wires need to be connect to send sound to the woofer.
Answered by: Chilly
Date published: 2015-03-21

I can't control the volume of my nb2540 sound bar with the tv remote of my LG 55ln5400. How do you get these two units talking to each other?

Asked by: birddog
We appreciate your interest in these devices. The remote control of the television is not a universal remote. The closest control function that might be available would be the SIMPLINK button on the controller. This can only work if both devices are connected with a HDMI cable. For additional information, please contact our Customer Interactive Center at 800-243-0000.
Answered by: NeilE
Date published: 2014-09-16
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