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Key Features

  • 2.1 ch High Resolution Audio
  • Bluetooth Streaming
  • Adaptive Sound Control (ASC)
  • LG Sound Sync Wireless
  • Wireless Active Subwoofer
  • HDMI Connectivity
See Retailer for Pricing
High Resolution Audio

High Resolution Audio

Digital music has gone audiophile, with higher sampling rates and bit depth which can contribute to a more accurate, more enjoyable listening experience. This CTA-certified sound bar can play back lossless stereo audio at up to 24-bit/96kHz quality.

Wireless Surround Ready

Wireless Surround Ready

This upgradeable sound bar has been designed to accept optional wireless surround speakers (SPJ4-S kit sold separately), adding the premium cinema experience of dedicated rear channels, with wireless convenience.

Learn More


Surround Sound Expansion

Upgrade to a truly cinematic surround audio experience. This optional kit (SPJ4-S) includes a receiver unit that links wirelessly to compatible LG sound bars, then connects to a pair of supplied speakers that can be placed behind the listener

Surround Sound Expansion
Adaptive Sound Control

Adaptive Sound Control

For maximum enjoyment of various types of programming (movies, sports, games, etc.), LG-exclusive Adaptive Sound Control can automatically detect what’s playing and then enhance the clarity and impact of the audio.

LG Sound Sync

LG Sound Sync

Enhance the home cinema experience without the clutter of unnecessary cables. LG Sound Sync technology links compatible LG televisions to the sound bar wirelessly, using Bluetooth.

Bluetooth Connectivity

Bluetooth Connectivity

Wirelessly stream music directly from your Smartphone or other compatible device for a seamless listening experience.

Wireless Subwoofer

Wireless Subwoofer

An outboard wireless subwoofer can drastically improve the cinematic audio experience, adding room-shaking bass to movies and more.


What People Are Saying

Rated 5 out of 5 by from Helps my hearing problem I would add in the directions A or B. I thought I had to do both and it took me forever & a phone call to your help desk to figure it out.
Date published: 2018-08-19
Rated 4 out of 5 by from Outstanding.product ...the sound is.great and compliments my LG TV.
Date published: 2018-08-06
Rated 5 out of 5 by from Good audio We bought this about three weeks ago. We replaced a previous LG sound bar (purchased about a year and half ago) which my wife and I had a terrible time trying to hear and understand the dialogue. Yes we are of an age where our hearing is getting worse. This is a great improvement! No more arguments about what was said or turning it up.
Date published: 2018-07-20
Rated 5 out of 5 by from Easy setup!! Super easy setup!! Great sound!! I didn't have to do anything to get the wireless sub to work!! Just plug it in! I didn't even have to program my receiver remote! It just started working with the volume and it shuts off when I turn my TV off! Very Happy with this unit!
Date published: 2018-07-19
Rated 3 out of 5 by from Sounds GREAT, but... Great price at Sam's Club. Set up very easy, and it sounds great... BUT it does not work with my cable box remote, so I end up using 2 remotes and no volume setting appearing on the TV when changing volume. I even phone support for help. That was useless. Out sourced support, not very knowledgeable. I bought this unit because I have an LG TV and wanted the unit to work as an extension of the TV,  Its a separate component...  thats disappointing, and a bit of a hassle.
Date published: 2018-07-14
Rated 1 out of 5 by from Poor performance and features Poor performance, sound coming from TV thru Sound Bar lags the picture on the TV. Voice sound does not match TV person talking, as there is a time lapse, very annoying. Tried it with Bluetooth and digital sound wire, same poor result.
Date published: 2018-06-14
Rated 3 out of 5 by from Loud popping noises At times, sound bar makes very loud popping noise which has nothing to do with the program being watched. The first time it happened, I thought that something had fallen. The next time, I thought maybe it was part of the movie like a door slamming. After watching and listening, I'm sure that it just happens spontaneously. It's so loud that my dog jumps up and barks at the TV.
Date published: 2018-05-24
Rated 5 out of 5 by from Great System I’m very happy with this unit. I got it on sale at Sam’s Club. It set up very easily. It is very easy to switch through various features without having to jump through a lot of hoops! Sounds great. My IPhone synced with blue tooth very easily for a great sound. Have not had it to full volume as the full sound with kickin bass shakes my windows with out hurting my ears or upsetting my neighbors. A very good buy at $50 off.
Date published: 2018-05-11
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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.

Subwoofer woofers keep disconnecting from soundbar

Asked by: Makeo
It sounds like we'll need to walk through some troubleshooting for your sound system. Please head over to our support team via @LGUSSupport on Twitter so that we can dig into this a little more for you. ^CP
Answered by: ChrisPSM
Date published: 2018-03-03

I have the LASC 47 sound bar. Even at full volume it's not very loud. I've tried various streaming sources (youtube, youtube tv, hulu, netflix) and none of them are nearly as loud as the speakers on my Samsung 48mu8000. Is this normal?

Asked by: Psquaretrader2123
Hate to hear Psquaretrader2123, sounds like we may need to perform some troubleshooting. Please give us a call at 1-800-243-0000 when you are with your unit. ^AC
Answered by: amber
Date published: 2018-01-30

Which model is better LG SJ4Y-S LG LASC47

Asked by: Looka25
I don't why LGJoel said LASC47 not compatible with Spj4-s. LG wed site for LASC47 says it is compatible.
Answered by: Bernard57
Date published: 2018-01-21

Which rear speakers work with unit? Clearly states surround sound compatible but it’s not clear (and appears to contradict) other reviews. 

Asked by: SDinsunnyFL
The SPJ4-S is compatible with the LASC47. If you are in need of any assistance, have additional questions, or would just like to see our helpful tips, check us out on Twitter @LGUSSupport ^CP
Answered by: ChrisPSM
Date published: 2017-12-18

When I turn off my TV and sound bar then turn it back on the sound won't come back on. So I have to unplug the sound bar and plug it back in to get sound. Why dose it do this.

Asked by: Stir fry
It sounds like we'll need to walk through some troubleshooting for your home audio system. Please head over to our support team via @LGUSSupport on Twitter so that we can dig into this a little more for you. ^CP
Answered by: ChrisPSM
Date published: 2017-12-18

How do I get brackets for sound bar

Asked by: Enzo B
You will need 2 each of AAA76521202 and AGG75620751. ^AC
Answered by: amber
Date published: 2017-12-14

Can you hook the LASC 7 to a receiver and if so how? I want to be able to run the sound from the TV and my other devices i.e., dvd blue ray ps2 vcr etc through both the soundboard and my home theater system simultaneously. Can’t seem to figure out how.

Asked by: Ibanez1
This will depend on your receiver as the LASC47 does have a HDMI ARC out port on it. ^AC
Answered by: amber
Date published: 2017-12-13

how far away can you be from these speakers and still be able to use Bluetooth to stream music from a smart phone? Unobstructed by walls of course. 

Asked by: IchagoSushi
Your Smartphone, this LG 2.1 ch High Resolution Audio Sound Bar, Model # LASC47, or any other Bluetooth product that is classified as Class 2 Bluetooth all have a range of 10 meters (33 feet)...^IFV
Answered by: LGJoel
Date published: 2017-10-13
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