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


    • 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


    • LPCM
    • 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)
    • Yes


    • 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
    • 719192610132

What people are saying

Rated 1 out of 5 by from Not worth the hassle Connecting stops working constantly and now it Doesn’t connect at all. It is definitely a hardware flaw and LG won’t fix it. I would stay away and I’m not going LG in the future.
Date published: 2020-06-22
Rated 5 out of 5 by from Excellent Sound bar with speakers This is probably the best sound bar, I have ever owned. I have a lot of LG products and this one is my favorite. I have all 3 positioned right in front of the tv and it works fantastic
Date published: 2020-05-28
Rated 5 out of 5 by from Works Great! I bought this for my husband 3 years ago. Easy set up. Sound is good still, no issues. I would recommend if your looking for speakers for a small size room (13x17).
Date published: 2020-04-26
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Ask your questions. Share your answers.
Please review the detailed product information and help guides in the
Product Support section for this product prior to posting a question.

I have an OLED65C7P TV and a LG SJ7-C soundbar. Is there any way to connect Headphones and the soundbar so that both will work at the same time?

Asked by: tsez
No, a headset and a soundbar cannot be used at the same time. We apologize for the inconvenience.
Answered by: ChrisPSM
Date published: 2020-01-02

My SJ7-c speaker which is the non-primary speaker keeps disconnecting. I have to switch it to the off position for a minute and switch it back to sound bar mode for it to work and it stays on for 2-10 minutes before it disconnects again. Can you help?

Asked by: The1andonlymunoz
We hate to hear that, but would love to be able to help. We would be happy to see what's going on. Please contact LG Customer Support so that we can better investigate your issues and quickly assist you towards a resolution. You can contact our Customer Support by any of the below options: Phone: 1-800-243-0000 LiveChat: Email: Facebook Messenger: Twitter: @LGUSSupport The LG Community Forum is also a great resource for getting help from other LG customers:
Answered by: ChrisPSM
Date published: 2019-09-16

Can I use a different subwoofer? My sub got smashed during a move. Do I have to use the exact subwoofer model or can I use a different LG sub or a different brand all together

Asked by: Martin R
You cannot add speakers to the LG Sound Bar Flex with Wireless Subwoofer, Model # SJ7. Parts and accessories can be obtained through our parts distributor, Encompass Parts. Their contact number, for placing orders and pricing information, is 866-779-7906. You can also use their website, at ^CP
Answered by: ChrisPSM
Date published: 2019-02-21

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
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