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LG S40TR review

A 4.1 soundbar with wireless rears and a subwoofer, carrying Dolby Audio rather than Atmos.

In brief

Four channels, a subwoofer and wireless rear speakers for $250 on October 25, 2026 — which is real surround. But its own bullet says Dolby Audio, not Dolby Atmos, and there is no height channel. Key figures: 4.1 channel home theater soundbar with wireless rear surround speakers and a wireless subwoofer, Dolby Audio, Clear Voice Plus dialogue processing, Smart Up-Mixer, WOW Orchestra and WOW Interface for LG televisions, and a three-band equalizer app. Amazon.com had an offer at $250 on October 25, 2026.

What the maker puts in writing

  • “With 4 ch[annels]” and “Dolby Audio - Experience an unparalleled immersive journey with Dolby Audio”
  • “Our new rear surround speakers have wireless connectivity”
  • “WOW Orchestra - Create the perfect harmony using the audio from your LG TV and LG Soundbar”
  • “WOW Interface - Control your soundbar and your LG TV with one remote”
  • “Clear Voice Plus - Hear clear conversations in movies and shows… through analysis of audio output”
  • “Smart Up-Mixer - Leverage all speakers to convert 2-channel audio”
  • “LG Soundbar App - Customize the 3-band equalizer settings”

Dolby Audio is not Dolby Atmos

The second bullet says Dolby Audio, and the phrase matters.

Dolby Audio is the umbrella name for Dolby’s channel-based formats — Digital, Digital Plus, TrueHD — where each sound is assigned to a fixed speaker position.

Dolby Atmos is object-based: a mixer places a sound at a point in three-dimensional space and the system decides which drivers should produce it, height included.

And the channel count agrees with the bullet. 4.1 is four horizontal channels and a subwoofer — no third number, so no height channel.

So this is a surround soundbar on an Atmos shelf. That is not a fault, but it is not what the shelf implies.

What it does have, and it is the better bargain

Wireless rear speakers and a wireless subwoofer, for $199.99.

That is the cheapest route on this shelf to speakers physically behind your head — and behind is where most of the surround information in a film mix lives: ambience, reverb, a car crossing the frame.

Compare the alternatives at nearby prices. Samsung’s Q600F at $379.99 is 3.1.2: height channels, no rears. LG’s own S70TY at $289.99 is 3.1.1: one height channel, no rears. LG’s S95QR at $699.99 is 9.1.5 and has both.

Height channels fire at the ceiling and bounce sound down, which works well in a room with a flat reflective ceiling at the right height and poorly otherwise. Rears work everywhere.

Clear Voice Plus and the equalizer

Improve voice clarity through analysis of audio output.

Dialogue intelligibility is the commonest complaint about television sound, and four bars on this shelf address it by name: this, LG’s S70TY with an up-firing center channel, Sony with a dedicated center speaker, and JBL with PureVoice 2.0.

And the LG Soundbar App gives a three-band equalizer — bass, treble and more — which most of this shelf does not.

The LG-only features

WOW Orchestra plays the TV’s speakers and the soundbar together. WOW Interface puts both on one remote.

Both need a compatible LG television.

At least six of the eighteen bars here have a feature that only works with the matching TV brand: three LGs, two Samsungs (Q-Symphony, and the QS700F’s calibration via the TV microphone) and the Sony (Voice Zoom 3 with a BRAVIA).

What is not published

No power figure, where TCL, JBL and Nakamichi all publish one. No dimensions, like ten listings here — only Nakamichi publishes any, and one of its bars is 58 inches wide. No HDMI input count. No room calibration, which LG’s own S95QR has.

5,851 g is published, which is more than most of this shelf manages.

Prices quoted in this text were read on October 4, 2026. The live price is at the top of the page.

Buying it in the United States

Amazon.com lists this model (ASIN B0D1CPPL85) and had an offer at $250 on October 25, 2026. The price box on this page is refreshed live and takes precedence over that figure.

In its favor, and against it

Strengths

  • Wireless rear speakers AND a subwoofer for $250, which is genuine physical surround
  • Clear Voice Plus and a three-band equalizer app, which most of this shelf does not offer
  • The cheapest route on this shelf to speakers actually placed behind you

Compromises

  • Its own bullet says Dolby Audio, not Dolby Atmos — a different and much older format
  • Four point one channels means no height channel at all
  • WOW Orchestra and WOW Interface only work with an LG television

Specifications

Channels4.1 — a subwoofer and rear speakers, but NO height channel
Format, as publishedDolby Audio — not Dolby Atmos, see the FAQ
Rear speakersIncluded, wireless
SubwooferIncluded, wireless
DialogueClear Voice Plus, analyzing output to improve voice clarity
UpmixingSmart Up-Mixer, converting 2-channel audio across all speakers
With an LG TVWOW Orchestra plays TV and soundbar together; WOW Interface gives one remote
AppLG Soundbar App, with a three-band equalizer
Weight12.9 lb (5.9 kg)
Height channelsNone
Room calibrationNot stated, where LG’s S95QR has it
PowerNot published
DimensionsNot published
HDMI inputsNot published
Amazon referenceB0D1CPPL85
EAN0195174084564

What gets asked most

Is this an Atmos soundbar at all?

Its own listing does not claim to be one, and that is worth knowing before you buy. The second bullet reads: "Dolby Audio - Experience an unparalleled immersive journey with Dolby Audio." Dolby Audio is not Dolby Atmos. It is the umbrella name for Dolby’s channel-based formats — Digital, Digital Plus, TrueHD — in which sound is assigned to fixed speaker positions. Atmos is object-based: the mixer places a sound at a point in three-dimensional space and the system works out which drivers should produce it, including height. The channel count agrees with the bullet: 4.1 means four horizontal channels and a subwoofer, with no third number and so no height channel. What this bar gives you instead is rear speakers, which is a different and genuinely valuable thing.

Are rear speakers better than height channels?

For most rooms and most films, yes — and this is the cheapest bar on the shelf that has them. Real rears put sound physically behind your head, which is where the majority of surround information in a film mix actually sits: ambience, reverb, things passing. Real height channels fire at the ceiling to bounce sound down, and the effect depends heavily on having a flat, reflective ceiling of the right height. At $199.99 this includes wireless rears and a subwoofer. By comparison, Samsung’s Q600F at $379.99 is 3.1.2 — height channels, no rears — and LG’s own S95QR at $699.99 is 9.1.5, with both. If the budget is two hundred dollars, rears are the better buy.

What do WOW Orchestra and WOW Interface need?

An LG television, and on this shelf that kind of lock-in affects at least six of the eighteen bars. WOW Orchestra makes "the audio from your LG TV and LG Soundbar" play together — so the TV’s own speakers become additional drivers rather than going silent. WOW Interface lets one remote control both. Both require a compatible LG set. The same pattern elsewhere here: Samsung’s Q-Symphony works only with Samsung TVs, Samsung’s QS700F calibrates using the TV’s microphone, and Sony’s Voice Zoom 3 needs a compatible BRAVIA. If your television is a different brand, you are buying a bar whose headline features will not switch on.

Against the Dolby Atmos soundbars in the same bracket

Between Dolby Atmos soundbars at a nearby price. Shown: what they all state. A half-filled column says nothing.

Model Price ChannelsSubwooferPower
LG S40TR $250 4.1 — a subwoofer and rear speakers, but NO height channelIncluded, wirelessNot published
Denon DHT-S218 2.1 soundbar with built-in subwoofer $299 2.1 — statedBuilt into the bar — statedNot stated with conditions in this listing
LG S70TY $299 3.1.1 — three front, a subwoofer, ONE height channelIncluded, wirelessNot published
Sony BRAVIA Theater Bar 5 $348 3.1 — three front and a subwoofer, with NO height channelWireless, with a 6.30 in (160 mm) speaker unitNot published

What these Dolby Atmos soundbars do not share

  • If price decides: this model, at $250.

Who should pick this one, among Dolby Atmos soundbars

Real rear speakers on a budget — surround from behind, not height from above

What buyers actually choose

Amazon reports what buyers took in the month before this page was last checked: at least 1,000.

The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.

Sources

Specifications: the manufacturer sheet and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.

The method applied to these Dolby Atmos soundbars