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LG Sound Bar SJ4

  • SJ4

Key Features

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

High-Resolution Audio,
hear lifelike audio

Play WAV, FLAC and ALAC formats, as well as files of up to 24-bit and 96 KHz. These types of files provide higher fidelity and can sound more lifelike than CDs.

Wireless Subwoofer, superb bass without wires

Place the subwoofer where it looks and sounds the best without the worries of wires.

Adaptive Sound Control,
right sound for any content

Adaptive sound control(ASC) analyzes content in real time. When ASC detects that you are listening to Dialog it automatically adjusts to allow you crystal clear dialog, when it senses action it raises the sub for more impact.

Auto Sound Engine, sound balance at any volume

LG Auto Sound Engine optimizes your sound at any volume level and maintains precise frequencies at all times. This provides the appropriate sound balance regardless of the volume.

TV Matching Design,
complementary perfection

In simplistic elegance, allow the Sound Bar to perfectly complement its surroundings. Specifically designed to match and enhance your TV.

Bluetooth Stand-by,
wake up your bar on demand

Sound starts the moment you transfer audio to the Sound Bar.
The Sound Bar 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 Sound Bar 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.

Basic Info
Model Name SJ4
Mainset / Subwoofer Color Black
Matching TV Size (2017 TV) 40 inch or above
Sound System
Channel 2.1 ch Speaker System
Output Power
Total 300W
Front 60Wx2 (Tweeterx2)
Subwoofer 180W(Wireless)
Bluetooth 4.0
Audio Input 1 (3.5mm)
Optical 1
HDMI Input 1 (HDMI 1.4, HDCP 1.4)
HDMI Output 1 (HDMI 1.4, HDCP 1.4)
Display Type Dot LED
Sound Mode
4K Sound 24bit/96kHz
Sound Effect Adaptvie Sound Control (Default) / Standard / Bass Blast / Cinema
Night Mode Yes
Auto sound engine Yes
Smart Phone App Yes
Bluetooth Stand-By Yes
Control with TV Remote Yes
LG Sound Sync Bluetooth (LG TV) / Optical
Automatic Power on/off Bluetooth (LGTV) / Optical
Audio Return Channel (ARC) Yes
Audio Format
Dolby Digital Yes
DTS Digital Surround Yes
FLAC Yes (Up to 192kHz)
OGG Yes(Up to 48kHz)
MP3 Yes
Power Consumption
Sound Bar 22W
- Standby Below 0.5W
Subwoofer 33W
- Standby Below 0.5W
Dimension (W x H x D)(mm)
Sound Bar 890 × 55 × 85
Subwoofer 171 x 320 x 252
Weight (kg)
Sound Bar 2.4
Subwoofer 4.2
Standard Accessories Remote Control, Battery, Warranty Card, Optical Cable, Wall Mount Bracket


Simply choose a support option from the icons below:

  • Phone

    Call an LG Support Representative on:

    Hong Kong:(852) 3543-7777

    Macau:(853) 0800-498

    Monday to Friday : 09:00 to 19:00
    Saturday - Sunday : Close
    Public Holidays: Close