LG

LG S40TR 4.1 Channel Soundbar - Wireless Subwoofer and Rear Speakers

4.1 (920 reviews)

Fill every corner of your room with cinematic 4.1-channel surround sound from a wireless subwoofer and rear speakers.

$196.99*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

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Overview

The LG S40TR is a 4.1-channel soundbar system designed to bring genuine surround sound to your living room without the complexity of a traditional AV receiver setup. The package includes the main soundbar, a wireless subwoofer for deep bass, and two wireless rear surround speakers that can be placed behind your seating area. This configuration creates an immersive soundstage with Dolby Audio and DTS Digital Surround decoding, ensuring that movies, shows, and music benefit from multi-directional audio. The Smart Up-Mixer feature can even convert standard 2-channel stereo content into a multi-channel surround experience across all speakers.

For LG TV owners, the S40TR offers particularly compelling integration. WOW Orchestra combines the soundbar's output with the TV's own speakers for a richer, more layered sound, while WOW Interface lets you manage all audio settings from the TV remote — no need to juggle multiple remotes. Clear Voice Plus analyzes audio output in real time to boost dialogue clarity, a feature that proves especially useful during action-heavy scenes where conversation can get lost. The soundbar itself features LG's Crest design with a metal grill that looks refined on a media console while keeping dust out of the drivers. Additional customization is available through the LG Soundbar App, which provides a 3-band equalizer for tailoring bass, mid-range, and treble to your preferences.

Key Features

New Dimensional Sound - Come home to the cinematic sound you’ve always wanted, and experience every heart-thumping, thrill-inducing, moment. With 4 channels backed by a booming wireless subwoofer and wireless rear speakers, this LG Soundbar delivers a big audio punch without taking up too much of your space—or budget. Dolby Digital and DTS Digital compatibility means you still get enhanced sound quality for all your shows, movies, music and more.

Dolby Audio - Experience an unparalleled immersive journey with Dolby Audio. This LG Soundbar delivers an unforgettable listening experience with your favorite entertainment. Never miss a single detail, no matter where you're watching.

Rear Speakers - Now there’s a surround sound system for rooms of all shapes and sizes. Our new rear surround speakers have wireless connectivity—that means no special receiver needed to deliver an immersive audio experience.

WOW Orchestra - Create the perfect harmony using the audio from your LG TV and LG Soundbar to produce the ultimate listening experience. Feel every detail of sound. Use the LG TV and LG Soundbar speakers at the same time while using one remote to adjust the settings interchangeably.

WOW Interface - Now, convenience is in your hand. Control your soundbar and your LG TV with one remote. Adjust the volume and audio settings, check the connection status and even select a sound mode on the screen, all from the TV remote.

Crest Design - This is a soundbar that’s meant to be seen as well as heard. It features LG’s new crest design that gives the soundbar a sleek and stylish look. But looks are just the beginning. The metal grill also helps keep dust and debris out of your soundbar for worry-free audio enjoyment.

Clear Voice Plus - Hear clear conversations in movies and shows with Clear Voice Plus. Improve voice clarity through analysis of audio output to deliver more realistic sound through center speakers.

Smart Up-Mixer - Create a wider soundstage to fill your room for a richer immersion of surround sound. Leverage all speakers to convert 2-channel audio into a multi-channel experience.

LG Soundbar App - Customize the 3-band equalizer settings of your soundbar in a few simple steps by using the LG Soundbar App. Tap to set bass, treble and mid-range (for loudness) frequencies just the way you want, right from your smart device.

Home Theater Surround Sound - Now there’s a surround sound system for rooms of all shapes and sizes. Our new rear surround speakers have wireless connectivity to your soundbar—that means no special receiver needed to deliver an immersive audio experience.

Specifications

Channels
4.1
Subwoofer
Wireless
Rear Speakers
Wireless (included)
Audio Formats
Dolby Audio, DTS Digital Surround
Connectivity
Bluetooth, Optical Input, USB Port
Special Features
WOW Orchestra, WOW Interface, AI Sound Pro, Clear Voice Plus, Smart Up-Mixer
App Support
LG Soundbar App
Design
Crest Design with Metal Grill
Control
Remote Control, LG TV Remote (compatible models)
Brand
LG
Model
S40TR
Year
2024

Pros & Cons

👍 Pros

  • Wireless subwoofer and wireless rear speakers deliver true surround sound without running cables across the room
  • WOW Orchestra and WOW Interface provide seamless integration when paired with a compatible LG TV
  • Clear Voice Plus enhances dialogue clarity, making it easier to follow conversations in movies and shows
  • Crest design with metal grill looks sleek and helps protect internal components from dust
  • LG Soundbar App lets you fine-tune the 3-band equalizer directly from your phone

👎 Cons

  • Does not support Dolby Atmos or DTS:X, limiting the height-channel immersion available on newer content
  • WOW Orchestra and WOW Interface features only work with compatible LG TVs, reducing their value for other TV brands
  • No HDMI input means you cannot pass audio from a game console or Blu-ray player through the soundbar with ARC/eARC
  • 4.1-channel configuration lacks a dedicated center channel speaker, which can affect dialogue separation

Frequently Asked Questions

Yes, both the subwoofer and the rear surround speakers connect wirelessly to the soundbar — no speaker wire runs or a separate AV receiver required.
WOW Orchestra lets a compatible LG TV's built-in speakers play simultaneously with the S40TR soundbar, combining both audio sources for a fuller, more enveloping sound.
Yes, the WOW Interface feature allows you to adjust volume, sound modes, and connection status directly from a compatible LG TV remote without needing the soundbar's own remote.
No, the S40TR supports Dolby Audio (Dolby Digital) and DTS Digital Surround, but it does not support Dolby Atmos or DTS:X height channels.
It supports Bluetooth, optical input, and a USB port for media playback.