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Sound Bar Flex with Wireless Subwoofer

  • SJ7

Key Features

  • Dual Speaker Flexible Setup
  • Rear Surround Sound
  • Portable Bluetooth
  • Built-in Li-ion Battery
  • Vertical Positioning
The Versatile Sound Bar Flex



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.

Rear Surround Yes
Built-in Battery Yes
Bluetooth Streaming Yes
Adaptive Sound Control (ASC) Yes
Sound Sync Wireless Yes
HDMI In/Out Yes
Wireless Active Subwoofer Yes
Soundbar Mode - Channels 2.1ch
Soundbar Mode - Total Output Power 320W (Secondary Speaker Using AC Power) 140W (Secondary Speaker Using Li-ion Battery)
Rear Surround Mode - Channels 4.1ch
Rear Surround Mode - Total Output Power 320W (Secondary Speaker Using AC Power) 140W (Secondary Speaker Using Li-ion Battery)
Portable Mode - Channels 2.1ch (Primary Speaker) 2.0 (Secondary Speaker)
Portable Mode - Total Output Power 160W 30W
Bluetooth Remote App (Android) Yes
Bluetooth Stand-By Yes
Auto Music Play (BLE) Yes
TV Remote Compatibility Yes
Audio Return Channel (ARC) Yes
LCD Display Auto Dimming Yes
Subwoofer Level Control Yes
Wall Mountable Yes
Adaptive Sound Control (ASC): Default Yes
Standard Yes
Bass Blast Yes
Cinema Yes
Dolby Digital Yes
DTS Digital Surround Yes
Wireless Active Subwoofer Yes
Bluetooth (ver. 4.0) Yes
LG TV Sound Sync (Bluetooth) Yes
LG TV Sound Sync (Optical) Yes
HDMI 1.4 Out Yes (1)
HDMI 1.4 In Yes (1)
Optical Input Yes (1.0)
USB Host No (Service Only)
Front 60W x 2
Subwoofer 200W (wireless)
Battery Type Li-ion Battery
Battery Capacity 5200mAh
Battery Charging Time 3hr 40min
Battery Life Up to 4 hours of playback
Soundbar Standby Power Consumption Less than 0.5W
Subwoofer Standby Power Consumption Less than 0.5W
Recommended TV Size 43" and above
Speakers (WxHxD) 13.4" x 2.9" x 4.3"
Subwoofer (W x H x D) 6.7" x 12.6" x 9.9"
Subwoofer Net Weight 9.26 lbs
Remote Control Yes
Batteries Yes (AAA)
Optical Cable Yes
Vertical Table Stand Yes
Limited Warranty 1 Year Parts and Labor
UPC 719192611351

What People Are Saying

Rated 4 out of 5 by from Love! Very easy to setup. What I love about it is the 2 speakers that can be separated. My only con would be it's not as loud as I wanted it to be. The sound is great but not so loud my house is
Date published: 2017-09-12
Rated 5 out of 5 by from Awesome flexibility!! I bought this today and it exceeded my expectations.. I was looking for a speaker system that was economical and had the flexibility to be used as a surround sound system or just front speakers I could move to a room that was far from the tv. What else can I say Awesome. The sound is incredible! LG you outdid you self with this sound bar... Piece of cake to connect to my LG tv.
Date published: 2017-08-29
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We're here to support you with our product.

View SJ7 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.

Is it possible to add more speakers to the system?

Asked by: rcrucer
We appreciate your interest in this sound bar. I do apologize, but it is not possible to add additional speakers to the unit.
Answered by: NeilE
Date published: 2017-08-23

I just hooked this up and it sounds great. Is it possible to have the TV playing through the speakers and adds a microphone? We want to Karaoke along with the TV.

Asked by: Microphone
Unfortunately the unit doesn't have a port or option to connect a microphone. So there would not be a way to connect a microphone to the unit.
Answered by: NeilE
Date published: 2017-07-18

IS THIS PRODUCT compatible with Sony XBR75X850D 4K HDR Ultra HD Smart TV ?

Asked by: gregko
The LG Sound Bar Flex with Wireless Subwoofer, Model # SJ7 supports Bluetooth connectivity so it can be paired via Bluetooth to any TV that supports Bluetooth regardless of brand or make. It also has an Optical Digital Audio Input that can be connected to the Optical Digital Audio Output of a TV that has that port. Another port that can be used is the HDMI ARC port on the Sound Bar which can also be connected to any HDMI ARC port on a TV that supports HDMI ARC functionality...^IFV
Answered by: LGJoel
Date published: 2017-05-24

Do you need a transformer when using 220w?

Asked by: Tamis

Is there a notification list I can get on for when LG SJ7 is released to market? I want one for my OLED65G6P. ;^)

Asked by: LGFanboy
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