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Key Features

  • Dual Speaker Flexible Setup
  • Rear Surround Sound
  • Portable Bluetooth
  • Built-in Li-ion Battery
  • Vertical Positioning
Suggested Price


Suggested Price
Flexible Design

Flexible Design

Different rooms have different needs, so the dual-speaker design of the LG Sound Bar Flex enables it to be configured in a variety of ways. However you like to enjoy movies and music, this audio package delivers.

Bluetooth Connectivity

Portable Bluetooth

For even greater versatility, one of the speakers in this LG sound system is equipped with a built-in rechargeable battery, allowing it to be placed and enjoyed just about anywhere.

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 SJ7

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.

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 My new soundbar spoils me! I bought for my birthday....instantly spoils me. It was super easy to set up and is a sexy accessory to my living room. It sounds awesome with the bass and treble. I am extremely happy with it and the fact that it can be wireless, I can't wait to enjoy it as such.
Date published: 2018-08-01
Rated 3 out of 5 by from It's Ok. The sound quality is good for a speaker it's size but Bluetooth is iffy and one speaker is experiencing a "popping noise" that I can't pinpoint.
Date published: 2018-07-26
Rated 4 out of 5 by from Easy to set up This was easy to set up and I like the flexibility of splitting the speakers so that they are on either side of the TV. The sounds is good, better than just using the TV speaker.
Date published: 2018-07-21
Rated 5 out of 5 by from Very Cool Systemha I picked this unit up at BestBuy on a closeout deal and after I got it home I had a few issues hooking it up and pairing it together because it didn't come with the owners manual. Got on the LG website and downloaded the manual and hooked it right up. Sounds Great and really like the fact that you can separate the speakers, which sounds much more like a normal stereo. Really like the portable bluetooth set up, the remote that controls bass, treble, and woofer. Just a neat unit.
Date published: 2018-07-01
Rated 1 out of 5 by from Speakers randomly disconnect from each other The system is great in terms of a flexible setup, but the speakers disconnect from each other. The disconnects cause the sub and right speaker sound to go in and out. This seems to occur randomly.
Date published: 2018-06-29
Rated 4 out of 5 by from Good design - great sound I bought this product as a gift. The sound quality is great. Really enjoy watching movies now with this sound bar. The reason why I'm giving this review "good" vs. "excellent" is due to the Bluetooth compatibility. Its great I can play my music on my computer through the sound bar; however, every time I turn on my wireless headphones, it turns off the sound on the TV. So if someone is watching a movie and then someone else wants to list to music from their computer with the wireless headset, the sound for the movie stops. I'm unable to find a solution to this problem. Other than that one little issue, I'm very pleased with the product. I really like how the speakers can be separated on each side of the TV, or take one in another room. Great feature.
Date published: 2018-06-16
Rated 5 out of 5 by from Sounds great The sound is great & easy to use. I really like being able to move the speakers around.
Date published: 2018-05-24
Rated 5 out of 5 by from Love It Bought this set a month ago and it really accentuates my LG 55 inch smart tv and i really like the easy configurations and set up
Date published: 2018-05-19
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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.

I need a remote Control for my flex sound bar

Asked by: Mr WILL
Hello, please see the below link for the part. ^AC
Answered by: Amber C
Date published: 2018-09-05

The sound bar is connected to the tv and shows that it is connected and it is on the correct function. However sound doesn't come from the sound bar. I even paired it with my Bluetooth phone and it still wouldn't play. Ideas?

Asked by: Kiki123
Hello, we do need more information to be able to assist. Please give us a call at 1-800-243-0000 when you are with the unit. ^AC
Answered by: Amber C
Date published: 2018-02-19

Does the surround button have any effect on the audio if you are in Sound Bar mode or does this only apply if you are using the 2nd speaker in Back mode? Does Cinema mode give you separation (stereo) between the 2 speakers in Sound Bar mode?

Asked by: CGinSD
In soundbar mode the Primary unit and Secondary unit play as FRONT L/ R (Left/Right) speaker like a sound bar. The surround sound button would give you the feeling of sound to the left and to the right but would not give you the rear sound. With cinema mode you can enjoy more immersive and cinematic surround sound. ^CP
Answered by: ChrisPSM
Date published: 2018-02-10

Can the Subwoofer placed horizontally?

Asked by: LG007
The subwoofer is designed to be placed vertically. ^CP
Answered by: ChrisPSM
Date published: 2018-02-10

What is the AC input voltage?

Asked by: LG007
The LG Sound Bar Flex with Wireless Subwoofer, Model # SJ7 has an AC/DC Adapter, Model # DA-38A25 that has an Input of 100 - 240 V ~ 50-60 Hz, 1.2 A and a DC output of 25 V, 1.52 A...^IFV
Answered by: LGJoel
Date published: 2018-02-09

Can a nearby electronic device cause interference with the two speakers? I have the system connected to the tv but sometimes I get a loss of audio between the two. Sometimes the left side cuts off for a second then the right. I have multiple devices near

Asked by: Danhernan78
In the 'Using BLUETOOTH® technology' on page 27 of your owner's manual for the LG Sound Bar Flex with Wireless Subwoofer, Model # SJ7, the second paragraph explains that "The sound may be interrupted when the connection has interference from other electronic waves or when you connect Bluetooth in the other rooms." Devices like your phone, your microwave oven or other devices that operate in the same frequency range (i.e. between 2402 and 2480 MHz, or 2400 and 2483.5 MHz including guard bands 2 MHz wide at the bottom end and 3.5 MHz wide at the top.) can cause interference and depending on what material your walls are made of, electrical conduits within the walls can also cause interference. Then on page 35 of your owner's manual under 'NOTES to use wireless' is also advises that if the problem is "This device may have wireless interference", that the Cause and correction may be that {1}Wireless may not operate normally in weak signal area. {2} Please install the device close enough to wireless subwoofer, or {3} Do not install the device on metal furniture for optimum performance. It also explains that if the problem is "Bluetooth device may malfunction or make noise in the following cases.", that the cause and correction are: {1} When any part of your body makes contact with the transceiver of the Bluetooth device or sound bar. {2} When there is an obstacle or wall or the device is installed in a secluded spot. {3} When there is a device (a wireless LAN, medical equipment or a microwave) using the same frequency, make the distance between the products as far as possible away from each other. {4} When connecting the device to a Bluetooth device, make the distance between the products as close as possible. {5} When the device gets too far from the Bluetooth device, the connection is disconnected and the unit may malfunction...^IFV
Answered by: LGJoel
Date published: 2018-02-07

Is the soundbar able to be mounted on the wall? 

Asked by: Danhernan78
The specifications for the LG Sound Bar Flex with Wireless Subwoofer, Model # SJ7 list it as a Wall Mountable unit, however, it does not come with a mounting bracket as an included accessory. You can check Consumer Electronic Retail stores like Best Buy etc., to see if they carry aftermarket mounting brackets that you might be able to use...^IFV
Answered by: LGJoel
Date published: 2018-02-07

Is the sj7 flex sound bar compatible with the spj4-s wireless speaker kit?

Asked by: Bandino
The SPJ4-S Kit is compatible with SJ4Y and SJ5Y Sound Bar Models. ^AC
Answered by: amber
Date published: 2018-05-27
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