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320W 4.1ch Streaming Sound Bar with Wireless Subwoofer

  • NB3740

Key Features

  • Premium Content - Hulu Plus®, Netflix®, YouTube® and more
  • LG Apps
  • Wireless Subwoofer
  • Built-In Wi-Fi®
Premium Content

Premium Content

Access premium content from providers like Hulu Plus®, Netflix® and YouTube® directly through the NB3740.. Stream your favorite movies and TV shows, enjoy the latest games, apps and more. LG connects you to the content that you and your family want.

Disclaimer: *Internet connection & some subscriptions required and sold separately.

LG Apps

LG Apps

The LG Smart World app store built into your LG Smart TV is loaded with fun and useful new apps for you to search, download and enjoy, taking your entertainment experience to the next level.

Disclaimer: *Internet connection & some subscriptions required and sold separately.

Wireless Subwoofer

Wireless Subwoofer

Add sharp sonic kick and thunderous power to all of your entertainment with our wireless subwoofer. It's easy to set up, and you won't need to run a wire to connect it to your audio system.

Built-In Wi-Fi®

Built-In Wi-Fi®

Connecting your LG A/V product to the Internet and the world of online content is easy when you have Wi-Fi® built in. If you have an existing wireless broadband network, setup is simple, and you don't need to worry about messy wires.

Disclaimer: *Internet connection required and sold separately.

Bluetooth®

Bluetooth®

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

HDMI Out

HDMI Out

An HDMI output port on a sound bar? Because this is a Smart sound bar capable of streaming movies and TV shows, it offers HDMI out, to pass its high-quality video signal on to the TV for all to enjoy.

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.

PREMIUM CONTENT PROVIDERS
Vudu Yes
Netflix Yes
Hulu Yes
CinemaNow Yes
Youtube Yes
M-GO Yes
MLB Yes
Amazon Yes
Pandora Yes
Crackle Yes
Spotify Yes
Rhapsody Yes
Accuweather Yes
Vtuner Yes
AP Yes
Google Maps Yes
Facebook Yes
Twitter Yes
Viewster Yes
GENERAL
Channels 2.1
Total Power 320 Watts
FEATURES
Automatic Power on/off Yes
A/V Sync Yes
SIMPLINK Yes
USB Host Yes
Audio Return Channel (ARC) Yes
External HDD Playback Yes
Smart Share (DLNA) Yes
VIDEO FORMAT
MPEG2 Yes
MPEG4 AVC (H.264) Yes
SMPTE VC1 (VC-9) Yes
DivX/DIvX HD Yes
MKV Yes
M4V Yes
WMV Yes
FLV Yes
3GP Yes
MPEG-1 Yes
MP4 Yes
MOV Yes
VOB Yes
SPEAKER
Front 40W x 2
Surround 40W x 2
Subwoofer 160W (wireless)
AUDIO SOUND MODE
Standard (By pass) Yes
Music (Natural) Yes
Bass Yes
D.Loud(Loudness) Yes
Dynamic Range Control Yes
AUDIO FORMAT
LPCM Yes
Dolby Digital Yes
DTS 2.0 Yes
MP3 Yes
WMA Yes
MPEG2 AAC Yes
FLAC Up to 192kHz
CONNECTIVITY
Wireless Audio Streaming via Bluetooth® Yes
HDMI® Out Yes
HDMI® Input Yes
Optical Input Yes
USB Yes
INCLUDED ACCESSORIES
Remote Control Yes
Batteries 2 (Size AAA)
Optical Cable Yes
USB Gender Yes
Wall Mount Bracket Yes
POWER
Power Consumption 30W
Standby 0.5W
DIMENSIONS / WEIGHT
TV Matching 47" and above
Subwoofer (W x H x D) 6.7" x 14.2" x 12.4"
Shipping Dimensions (WxHxD) 43.6" x 9.5" x 19.4"
Net Weight 15.9 lbs
Shipping Weight 26.5 lbs
WARRANTY / UPC
Limited Warranty 1 Year Parts and Labor
UPC 719192592506

What People Are Saying

Rated 3 out of 5 by from Good Soundbar This is a good soundbar with great sound for movies and video games. The bass can get extremely loud as well with good clarity. The surround sound quality is pretty solid too. However I have sent mine in to get fixed before for issues. Every now and again, the sound goes away and every voice sounds like they were sucking on helium. It has happened less since being sent in to LG, but it still occurs. If you are looking for a soundbar, I would recommend not going with this one and looking for a newer model.
Date published: 2017-02-07
Rated 4 out of 5 by from LG stands by their products. Excellent cust serv. My 4.1 Sound bar sounds fantastic! Even though I had a problem with it after two years of trouble free use, I called customer service repaired my unit for free even after the warranty had expired. LG stands by their products.....Life's Good
Date published: 2017-01-16
Rated 4 out of 5 by from Good sound with a nice subwoofer I have had this for over a year and have been pretty happy with this soundbar. It has good sound with a nice kick from the subwoofer. The only problem I have had is when changing outputs sometimes I will have to change back to the soundbar because of no sound. I have it paired with a LG 65UB9500 4k tv and the remote for the tv works and the sound is nice and balanced, the highs are very clear and the subwoofer has a decent amount of bass. Overall I am pleased with my purchase.
Date published: 2017-01-07
Rated 5 out of 5 by from Great Sound Love this unit!! The sound is fantastic for my new TV...love the wireless part hate running wires....very good sound quality!!
Date published: 2015-07-31
Rated 4 out of 5 by from Great sound bar for the price Easy set up out the box, sound quality is great for the living room with my LG 55". Movies are even better now with the theater like sound. Regular tv is also upgraded. With bluetooth, streaming music from my devices is awsome!!!!. If you dont want to spend a ton of money on popular name brand sound bars this is the sound bar for you!!!! Great sound bar for the price. Dont wait. Get one, youll be glad you did.
Date published: 2015-07-12
Rated 5 out of 5 by from Excellent Product This was such an excellent purchase a fantastic addition to my home television experience. Setup was very easy especially the connection to the wireless sub-woofer which was completely seamless. The sound went beyond my expectations. I would recommend this product to anyone that wants surround sound at a reasonable price. The sound is equivalent to systems costing hundreds of dollars more.
Date published: 2015-06-17
Rated 4 out of 5 by from Good product for the price Good product for the price. I was disappointed, however, that it did not come with both cords for the TV
Date published: 2015-06-06
Rated 4 out of 5 by from sound bar I small tv room room.but with this sound bar ,it really fills the roomlike at a movie theater.family havig lots of fun with the quality effects.
Date published: 2015-05-20
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We're here to support you with our product.

View NB3740 Product Support

Contact us for any support inquiries.

ASK & ANSWER

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.

I do not have the remote for the soundbar. Can I use an app instead?

Asked by: Eric1978
Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at http://www.mcmelectronics.com/content/en-US/forms/lg_parts. The part number for this item is: AKB73775701.
Answered by: NeilE
Date published: 2017-02-08

I have the LG NB3740 sound bar. I have it connected to my LG Smart TV using an  HDMI (ARC) cable. When the sound bar comes on, it goes to Home or Optical not ARC. What do I need to do?

Asked by: Rory B
We regret the inconvenience you have experienced with this Sound Bar. Be certain that only one audio connection (HDMI/ARC) cable is connected and that the TV’s Audio Out setting is configured for the ARC output. It may be suggested to utilize the OPTICAL port, instead of the ARC, if adjustments to the audio configuration is undesirable. With this connection, the INTERNAL SPEAKERS+OPTICAL setting can be set, and the external sound can activate automatically. For additional information or clarification, please contact our Customer Interactive Center at 800-243-0000.
Answered by: NeilE
Date published: 2017-01-23

Im trying to connect the sound bar to my tv, but the tv doesnt have an optical how I can get sound working?

Asked by: Ale0421
We appreciate your interest in this Sound Bar System. This model is designed to connect to a television using either the OPTICAL Digital Audio jack or the HDMI / ARC jack. The compatibility of this alternate connection will depend upon the design of the TV.
Answered by: NeilE
Date published: 2017-01-13

We bought our sound bar almost 2 years ago brand new. We just moved and now there is a short in the DC adapter, where can I buy a replacement?

Asked by: MrsRobbins
Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at http://www.mcmelectronics.com/content/en-US/forms/lg_parts. The part number for this item is: EAD61909201.
Answered by: NeilE
Date published: 2016-11-04

My LG soundbar used to work fine with no problem. Then recently the subwoofer started cutting in and out. And now I can't get them to pair. The subwoofer just has an orange/red light on it now. HELP!

Asked by: N8te
We regret the inconvenience you have experienced with this Sound Bar system. It is suggested to UNPAIR the device before attempting to RE-PAIR the system. If this does not resolve the matter, please contact our Customer Interactive Center at 800-243-0000.
Answered by: NeilE
Date published: 2016-06-15

Where can I get a wall mounting bracket? I believe I lost it in a move.

Asked by: Ecam
You can buy mine I don't use it 
Answered by: Castortroy
Date published: 2016-04-30

My new LG sound bar keeps switching off every 20 minutes or so and with it the TV.  Is there a setting for this. Stuart. 

Asked by: Stuart 1
Our offices, in the United States, do not have specific product information units released in Britain. In order to obtain such information, it is recommended to check our subsidiary’s website, at http://www.lg.com/uk/support/contact/support-here-to-help.jsp.
Answered by: NeilE
Date published: 2016-04-08

Sub light is green and pairing with bar but sub isn't working.  I unplugged both for several min numerous times...they always pair but only the bar plays music.  

Asked by: Tessmp1
We regret the inconvenience you are experiencing with your sound system. Please contact our Customer Interactive Center at 800-243-0000 that we might troubleshoot the matter with you.
Answered by: ShenaS
Date published: 2016-03-21
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