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LG SJ4 Soundbar

  • SJ4

Key Features

  • High-Resolution Audio
  • Wireless Subwoofer
  • ASC (Adaptive Sound Control)
  • Auto Sound Engine
  • TV Matching Design
  • Bluetooth Stand-by


True to the Original High Resolution

A new standard of sound quality. With advanced audio processing technology delivering sound of 24bit/192kHz quality you have some of the best components available for Hi-Res Audio. Now you can listen to studio standards of sound with lossless playback, experiencing a new level of audio that is true to the original.


Place your Bass Wirelessly

Free your living room from wires. LG’s active wireless subwoofer allows you to enjoy superb sound quality without compromising on design.


Adaptive Audio for what you Watch

Intelligently adaptive audio. LG's unique audio enhancing technology analyses frequency levels as you listen to provide an optimum sound mix based on what you are watching. This advanced process ensures your audio instantly adapts to provide crystal clear dialogue or punchy powerful action whatever you choose to watch.


Optimised Audio

Automatically adjusted audio accuracy. LG Auto Sound Engine optimizes the audio at every volume level keeping the frequencies accurate in the right places. This delivers the correct sound balance no matter what volume your entertainment is playing at.


Picture Perfect Audio Partner

Picture perfect audio partner. Matching 43 inch LG TVs this soundbar mirrors the size and design of your television for the optimum audio visual partnership. Bring symphony to your home entertainment experience with an integrated solution.

Bluetooth Stand-by, wake up your bar on demand

Sound starts the moment you transfer audio to the Soundbar. The Soundbar remains in sleep mode but turns on and begins playing when the audio is sent via Bluetooth.

Auto Music Play, music that follows you

Sound starts the moment you enter the room With Auto Music Play activated the bar can automatically take over the playback of the audio from a connected device the moment it sense the device is nearby.

Control with your TV Remote

LG Soundbar comes with a remote but you can choose to use your own *TV remote as well.

(*LG, Sony, Philips, Sharp, Panasonic, Vizio, Toshiba and Samsung brand remotes).

Connected to your entertainment

Feel free to connect to the device you wish with HDMI, USB, Optical, Portable In and Bluetooth connectivity.

Main (w/ foot ) mm 890 x 55 x 85
Matching TV size ('17 New Designed LG TV) 40 inch ↑
Built-in Foot (H) mm 2
Addtional Foot (H) mm No
Subwoofer 171x320x252
Front Mold
Top / Bottom Mold
Subwoofer - Front Jersey
Subwoofer - Body Wood
Net Weight (Kg) - Main 2.4Kg
Net Weight (Kg) - Subwoofer 4.2Kg
Carton Size (W x H x D) mm 984x416x217
Carton Type Offset (L)
Gross Weight (Kg) 8.7Kg
Container Q'ty - 20ft 400
Container Q'ty - 40ft 960
Container Q'ty - 40ft (HC) 960
Channel / Output Power
Channel 2.1ch
Total 300W
Front 60Wx2 (Tweeterx2)
Subwoofer 180W(Wireless)
Speaker - Main
SPL 82dB
System Closed
Tweeter Unit - Front Only 20mm PPS Dome
Woofer Unit 40x100mm/4ohm
Impedance 4ohm
Speaker - Subwoofer
SPL 85dB
System Bass Reflex
Woofer Unit 6 inch
Impedance 3ohm
Audio Input- Portable In (3.5Ø) Yes
Optical Yes (1)
HDMI 1.4 (HDCP 1.4) - In / Out Yes(1) / Yes(1)
HDMI 2.0 (HDCP 2.2): 4K pass through - In / Out No/No
Wireless - Bluetooth 4.0 Yes
Etherner port No
WiFi No
Information Display
Display Type Dot LED
LED indicator Color Red (Stand By) + White (5)
Sound Mode
4K Sound - 24bit/96kHz Yes
Sound Effect - ASC (Adaptive Sound Control : Default) Yes
Standard Yes
Bass Blast Yes
Cinema (Sound Field eXtension default) Yes
Tone control - User EQ No
Night Mode - On/Off Yes
Auto Sound Engine - Default Yes
Dynamic Range Control - On/Off No
Auto Volume Leveler - On/Off No
Smart Phone App - Bluetooth (Android / iOS) Yes / No
Mood Station No
Update manager (FOTA) Yes
Bluetooth Stand-By Yes
Range of Flow (BLE) Yes
Control with your TV Remote (Vol + , - , Mute) Yes
Sound Sync - Bluetooth (LG TV) Yes
Sound Sync - Optical Yes
Automatic Power on/off - Bluetooth (LG TV) Yes/Yes
Automatic Power on/off - Optical Yes/Yes
A/V Sync (0~300ms) No
Simplink Yes
Audio Return Channel (ARC) Yes
Woofer Level (-15 ~ +6dB) Yes
Mute Yes
Auto Dimmer No
Timer No
Alram No
USB Host Yes
USB Charge No
Audio Format
Dolby TrueHD No
Dolby Digital Plus No
Dolby Digital Yes
Dolby Digital EX No
Dolby Pro Logic No
Dolby Pro Logic II No
Dolby Pro Logic IIx No
DTS Digital Surround Yes
DTS-HD Master Audio No
DTS-HD High Resolution No
DTS-Neo 6 No
DTS 96/24 No
FLAC - Up to 192kHz Yes
OGG - Up to 48kHz Yes
MP3 Yes
MPEG2 AAC - Bitstream / Decoding No
Power Consumption
Type - Main Adaptor (25V, 1.52A)
Type - Main - Power Off Consumption 0.5W Under
Type - Main - Power Consumption 22W
Type - Subwoofer 100~240V, 50/60Hz
Type - Subwoofer - Power Off Consumption 0.5W Under
Type - Subwoofer - Power Consumption 33W
Accessory Kit
Owners Manual - Web No
Book Simple / Yes
Wall Mount Guide Yes
Wireless Speaker Reset Guide Yes
4K Sound Yes
Open Source : No / Yes (Full / Simple) Yes (Full)
Type - Remote Control Unit MA5(Black)
Battery(Size) AAA x 2
Batteries Yes
Warranty Card Yes
Portable In Cable No
HDMI Cable No
Optical Cable Yes
USB Gender No
Wall Mount Bracket Yes
Cable Management No
Table Stand(Detachable Foot) No
Box Type Offset (L)

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