LG S40T 2.1ch Soundbar with Wireless Subwoofer

75%

25%

Audio Quality

Bass Performance

Dialogue Clarity

Setup & Installation

WOW Interface & Smart Integration

App Experience

Build Quality & Design

Value for Money

Wireless Reliability

Remote Control

Soundstage Width

Connectivity Options

Wall Mount Usability

Long-Term Reliability

Overview

The LG S40T 2.1ch Soundbar with Wireless Subwoofer landed in 2024 as a genuinely practical upgrade for anyone tired of their TV's flat, lifeless audio. At just 2.5 inches tall and spanning roughly 28 inches wide, it sits unobtrusively beneath most screens without dominating the room. The wireless subwoofer is the real draw here — no cables to route behind furniture, and the low-end it adds is noticeable from the first movie scene. That said, this is a 2.1 system, not a surround setup. If you're expecting Atmos-level height effects or an enveloping soundstage, look elsewhere. For a normal living room, though, it punches well above built-in TV speakers.

Features & Benefits

What makes the S40T stand out functionally is how little friction there is day to day. WOW Interface lets LG TV owners control volume, sound modes, and connection status directly from their existing TV remote — no extra remote hunting, no switching inputs. It's genuinely convenient, though worth noting it only works with compatible LG televisions. Dolby Digital and DTS support means streaming and disc content sounds richer than standard TV audio, without overstating the fidelity. Clear Voice Plus does real work for dialogue-heavy shows — if you've ever cranked the volume just to catch what someone said, this feature earns its place. The companion app rounds things out with basic but usable three-band EQ control.

Best For

This 2.1ch sound system makes the most sense for LG TV owners with screens in the 43-inch to 65-inch range, particularly if you want everything controlled through one remote without extra configuration. It's also a strong pick for renters or apartment dwellers where running cables across a room isn't practical — the wireless subwoofer handles that cleanly. First-time soundbar buyers stepping up from flat TV speakers will likely find it a meaningful jump. Where it falls short: if you're comparing it to Dolby Atmos bars or building a dedicated listening room, this LG soundbar isn't the right tool. It's built for everyday convenience, not critical listening.

User Feedback

With over a thousand ratings averaging 4.2 out of 5, the S40T has earned a solidly positive reception — but the feedback is worth reading carefully. Most buyers highlight easy setup and a clear improvement over their TV's built-in speakers, and the wireless subwoofer connection tends to stay reliable, which isn't always a given at this tier. On the downside, some users find the bass gets boomy or muddy at higher volumes, and the companion app has drawn complaints about intermittent Bluetooth pairing. Non-LG TV owners also note that key smart features simply don't activate outside the LG ecosystem, which meaningfully affects overall value depending on your existing setup.

#Sound Bars

#Speakers

#Home Audio

#Electronics

Pros

Wireless subwoofer adds real low-end impact without a single cable to route across the room.
WOW Interface lets LG TV owners handle everything — volume, sound modes, input — from one remote.
Setup is genuinely quick; most buyers report being up and running in under fifteen minutes.
Clear Voice Plus makes a noticeable difference for dialogue clarity in TV shows and films.
Low-profile design at 2.5 inches tall fits easily under most TVs without blocking the screen.
Dolby Digital and DTS support covers the vast majority of streaming and physical media content.
The LG Soundbar App offers straightforward EQ adjustments for bass, mid, and treble without overcomplicating things.
HDMI eARC and Bluetooth connectivity covers both wired home theater and casual wireless audio needs.
AI Sound Pro adjusts audio output automatically based on content type, reducing the need for manual mode switching.
Wall-mount compatibility gives flexible placement options for those who prefer a cleaner, mounted look.

Cons

WOW Interface smart controls are exclusive to compatible LG TVs — non-LG users miss out on the core convenience feature.
Bass can sound boomy and loose at higher volume levels rather than staying tight and defined.
The LG Soundbar App has drawn consistent complaints about unstable Bluetooth pairing and connectivity drops.
No Dolby Atmos or height channel support limits the sense of depth compared to step-up soundbar options.
The 3-band EQ in the app is functional but basic — buyers wanting granular audio control will find it limiting.
At louder listening levels, the soundstage can feel narrow for larger rooms or open-plan living spaces.
Non-LG TV users effectively pay for ecosystem features they cannot access, which affects overall value.
The optical cable is included, but there is no HDMI cable in the box despite HDMI eARC being the preferred connection.
The subwoofer's physical footprint is fairly large for smaller spaces, despite the soundbar itself being compact.

Ratings

The scores below reflect our AI-driven analysis of thousands of verified global buyer reviews for the LG S40T 2.1ch Soundbar with Wireless Subwoofer, with spam, bot-submitted, and incentivized feedback actively filtered out before scoring. We have weighted both enthusiastic praise and recurring frustrations equally, so what you see here is an honest, balanced picture — not a marketing summary. Standout strengths and genuine pain points are called out transparently across every category.

Audio Quality

76%

24%

For everyday TV watching — streaming dramas, weekend movies, sports — the S40T delivers a noticeably fuller sound than any built-in TV speaker. Dialogue comes through cleanly, and the overall presentation is warm enough to make long viewing sessions genuinely enjoyable without fatigue.

Push the volume past the midpoint and the sound can start to feel congested, with the mid-range losing some definition. It is a 2.1 system at its core, and that ceiling becomes apparent on orchestral soundtracks or anything that rewards a wider, more layered soundstage.

Bass Performance

68%

32%

The wireless subwoofer adds a genuine sense of weight to action sequences and bass-heavy music that is a real step up from flat TV audio. At moderate volumes, explosions and low-end music notes land with satisfying impact, and most casual listeners find the default tuning acceptable out of the box.

At higher volumes, the subwoofer tends to boom rather than thump — it loses precision and starts to muddy the lower mid-range. Buyers who have owned a dedicated subwoofer before will notice the lack of tightness, particularly on fast bass lines in music or rapid low-frequency effects in films.

Dialogue Clarity

83%

Clear Voice Plus is one of the more practically useful features on this system, and reviewers who watch a lot of dialogue-heavy content — crime dramas, documentaries, news — consistently call it out as a genuine improvement. Speech stays intelligible even when background music or ambient effects compete for space.

In its more aggressive settings, Clear Voice Plus can make voices sound slightly processed or artificially boosted, which some users find distracting during quieter, more intimate scenes. It works best left at a moderate level rather than maxed out.

Setup & Installation

91%

The subwoofer pairs automatically on first power-up without any manual steps, and the soundbar itself is ready to use within minutes of unboxing. Verified buyers frequently describe setup as one of the easiest they have experienced in this product category, which matters a lot for first-time soundbar owners.

The box includes an optical cable but no HDMI cable, which catches some buyers off guard since HDMI eARC is the recommended connection method. Buyers who do not already have a spare HDMI cable will need to factor in an additional purchase.

WOW Interface & Smart Integration

79%

21%

For LG TV owners, the ability to control volume, sound modes, and input selection entirely from the existing TV remote is a meaningful convenience that holds up in daily use. Buyers consistently describe it as one of those features that feels minor until you have it, and then feels indispensable.

WOW Interface is completely non-functional with non-LG televisions, and this limitation is not always clearly communicated at the point of purchase. Non-LG TV owners who bought the S40T partly for its smart features have expressed frustration at discovering the restriction after the fact.

App Experience

57%

43%

The LG Soundbar App gives users a straightforward way to tweak bass, treble, and mid-range levels from their phone, which is more convenient than cycling through remote menus. For users who set their EQ preferences once and leave them, the app does its job without getting in the way.

Bluetooth connectivity between the app and the soundbar is inconsistently reliable — a recurring complaint involves the app failing to connect without a full restart of either the soundbar or the phone. The EQ itself is also fairly rudimentary, offering three bands where competing apps at similar price points offer more granular control.

Build Quality & Design

82%

18%

The metal grille finish gives the S40T a premium look that holds up well on a TV stand or mounted on a wall, and the low-profile form factor at 2.5 inches tall means it disappears visually beneath the screen rather than dominating the setup. The crest design has drawn consistent positive comments from buyers who care about how audio gear looks in their living room.

The subwoofer housing is plastic rather than the brushed metal aesthetic of the soundbar, which makes the two units feel slightly mismatched side by side. A few buyers have also noted that the soundbar is susceptible to fingerprint smudging on the top surface.

Value for Money

74%

26%

For LG TV owners who fully unlock the WOW Interface and smart features, the price-to-feature ratio feels reasonable — you get wireless sub, smart integration, Dolby Digital, and app EQ in one package. First-time soundbar buyers in particular tend to rate the value positively because the jump from TV speakers feels dramatic.

Non-LG TV users consistently rate the value lower, since key features are inaccessible on their setup. At its full asking price, there are competing 2.1 bars from other brands that offer tighter bass performance and more capable apps for a similar outlay.

Wireless Reliability

86%

The wireless link between the soundbar and subwoofer holds up reliably under normal household conditions, with buyers reporting stable connections even through walls and across medium-sized rooms. Dropouts at standard listening distances are rarely mentioned in verified feedback.

In environments with significant wireless congestion — dense apartment buildings or homes with many active Wi-Fi and Bluetooth devices — a small subset of users has reported occasional brief audio dropouts from the subwoofer. It is not a widespread issue, but it is worth noting for high-density living situations.

Remote Control

71%

29%

The included remote is compact, responsive, and covers the essential controls without being overwhelming. For buyers who use it as a backup to their LG TV remote, it works perfectly well and the button layout is intuitive from day one.

The remote feels lightweight and somewhat cheap relative to the overall build quality of the soundbar itself. There is also no backlight on the buttons, which makes it easy to fumble for the right control in a dimly lit room during a film.

Soundstage Width

61%

39%

In smaller rooms, the S40T produces a sound that feels appreciably wider than what a TV emits natively. AI Sound Pro and the Smart Up-Mixer do add a modest sense of spatial expansion for stereo content, which casual listeners tend to notice and appreciate.

In rooms larger than a typical apartment living space, the soundstage narrows noticeably and the system can struggle to create any real sense of audio depth or separation. Buyers who have tried a proper surround setup before will feel the absence of rear and height channels immediately.

Connectivity Options

78%

22%

HDMI eARC, optical, and Bluetooth together cover most realistic use cases without the user needing an adapter or workaround. Bluetooth pairing to a phone or tablet for music streaming works quickly and stays connected consistently in most reported scenarios.

There is no Wi-Fi streaming or support for platforms like AirPlay 2 or Chromecast, which limits integration with whole-home audio setups. Buyers expecting broader smart home connectivity beyond Bluetooth will find the options somewhat narrow for a 2024 model.

Wall Mount Usability

69%

31%

The soundbar has the keyhole slots needed for wall mounting built into the rear of the unit, and its slim profile looks genuinely clean when mounted directly beneath a wall-hung TV. Buyers who have gone this route describe the visual result as polished and space-efficient.

LG does not include a wall mount bracket in the box, so buyers need to source a compatible third-party option separately. Identifying the correct bracket and ensuring proper stud or anchor placement adds setup time and cost that some buyers did not anticipate.

Long-Term Reliability

73%

27%

The majority of buyers who have owned the S40T for six months or more report no hardware failures, and the wireless subwoofer connection has remained stable over extended use for most users. The metal grille construction also holds up without visible degradation under normal living room conditions.

The limited warranty coverage means that buyers outside the standard warranty window are fully exposed to repair or replacement costs. A handful of longer-term owners have also noted that firmware updates via the app have occasionally reset custom EQ settings without warning.

Suitable for:

The LG S40T 2.1ch Soundbar with Wireless Subwoofer was clearly built with a specific buyer in mind: someone who owns an LG TV, wants noticeably better sound, and has zero interest in configuring a complex audio setup. If your screen sits somewhere in the 43-inch to 65-inch range and you've been putting up with flat, tinny TV speakers longer than you'd like to admit, this system addresses that frustration directly and without fuss. The wireless subwoofer is a genuine quality-of-life feature for renters or anyone in a smaller apartment where routing cables across a room simply isn't realistic. Casual home theater fans who watch a lot of dialogue-heavy dramas or action movies will also get real, everyday value from the Clear Voice Plus and AI Sound Pro features. And if the idea of juggling multiple remotes makes you want to skip the whole upgrade entirely, the WOW Interface's single-remote control — for LG TV owners specifically — removes that friction almost entirely.

Not suitable for:

If you're shopping with a dedicated home theater or serious listening room in mind, the S40T will leave you wanting more. This is a 2.1 channel system, which means there are no height channels, no side surrounds, and no Dolby Atmos support — the kind of immersive, three-dimensional sound that higher-tier bars deliver simply isn't on offer here. Audiophiles or buyers who have already experienced a proper surround setup will likely find the bass response a bit one-note and the overall soundstage too narrow for critical listening. The WOW Interface integration, one of the system's headline features, is locked to compatible LG televisions — if you're pairing this with a Samsung, Sony, or any other brand's TV, you'll lose a meaningful chunk of the convenience that justifies the purchase. Buyers chasing deep, precise bass reproduction should also know that at higher volumes, the subwoofer can drift toward a boomy quality rather than staying tight and controlled.

Specifications

Channel Config: The system uses a 2.1 channel configuration, consisting of a soundbar unit and a separate wireless subwoofer for dedicated low-frequency output.
Soundbar Size: The soundbar measures 28.4″ wide, 2.5″ tall, and 3.4″ deep, making it a low-profile fit beneath most mid-size televisions.
Subwoofer Size: The wireless subwoofer measures 6.7″ wide, 12.6″ tall, and 9.9″ deep, designed to sit discreetly on the floor beside furniture.
Total Weight: The combined system weighs approximately 12.76 lbs (5.8 kg), with the soundbar accounting for the majority of that weight.
Connectivity: The S40T connects via HDMI (eARC), optical input, and Bluetooth, covering both dedicated home theater wiring and wireless streaming scenarios.
Audio Formats: Supported audio formats include Dolby Digital and DTS Digital, which cover the vast majority of streaming services, broadcast TV, and physical disc content.
Impedance: The soundbar operates at a 4 Ohm impedance, which is standard for consumer soundbar systems and compatible with typical home audio power supplies.
Driver Type: Both the soundbar and subwoofer use dynamic drivers, which are well-suited for producing full-bodied sound across a wide range of content types.
Smart Features: AI Sound Pro, Clear Voice Plus, and Smart Up-Mixer are built-in processing features that automatically adjust audio output based on the type of content being played.
EQ Control: The LG Soundbar App provides a 3-band equalizer allowing manual adjustment of bass, mid-range, and treble frequencies from a paired smartphone.
TV Compatibility: WOW Interface integration, which enables full soundbar control from the TV remote, is exclusive to compatible LG televisions in the 43″–65″ UHD range.
Subwoofer Link: The subwoofer connects to the soundbar wirelessly, eliminating the need for any physical cable between the two units during normal operation.
Mounting: The soundbar supports wall mounting, with the appropriate mounting pattern built into the rear of the unit for flexible placement options.
Build Material: The soundbar features LG's crest design with a metal grille finish that resists dust accumulation and gives the unit a clean, modern appearance.
Power Source: The soundbar is powered via a corded electric connection and does not support battery operation or wireless charging of any kind.
Remote Control: A dedicated remote control is included in the box and requires two AAA batteries, which are also included with the unit.
In the Box: The package includes the soundbar, wireless subwoofer, one optical cable, a remote control, AAA batteries, and a warranty card.
Warranty: The S40T is covered by a limited manufacturer warranty; buyers should verify the specific duration and terms through LG's official support channels.

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FAQ

It will work as a basic soundbar with any TV that has an HDMI eARC, optical, or Bluetooth output, but you will lose the WOW Interface functionality entirely. That means no controlling the soundbar from your TV remote and no on-screen audio menus. If smart integration matters to you and you have a Samsung or Sony TV, this specific setup will feel limited compared to what LG TV owners experience.

In most cases, the subwoofer pairs automatically with the soundbar the first time you power both units on — no manual pairing steps required. You just place the subwoofer where you want it, plug it in, and it finds the soundbar on its own. The process typically takes under a minute, and the vast majority of buyers report it working without any issues right out of the box.

No, it does not support Dolby Atmos. The S40T handles Dolby Digital and DTS Digital, which is perfectly adequate for most streaming and TV content, but it lacks the height channel processing that Atmos requires. If spatial audio with overhead sound effects is important to you, you would need to step up to a bar with dedicated upward-firing drivers.

Yes, you can adjust the subwoofer level independently through either the included remote or the LG Soundbar App. This is useful because some users find the default bass balance a bit heavy for music or dialogue-heavy content, while others want more punch for action films. Having that flexibility is one of the more practical everyday features of this system.

Almost certainly, yes. At just 2.5 inches tall, this LG soundbar has one of the lower profiles in its class, and it should clear the bezel of most modern TVs without any issue. That said, if your TV sits very close to a media unit surface with almost no gap, it is worth double-checking your specific setup before purchasing.

It is functional for EQ adjustments, but it has drawn mixed feedback. The 3-band equalizer is straightforward to use when the app connects properly, but some users have run into inconsistent Bluetooth pairing that requires restarting the app or the soundbar to resolve. If you plan to set your EQ once and leave it, the occasional connectivity quirk is manageable. If you expect to tweak settings frequently, it can get frustrating.

The S40T performs well in small to medium-sized rooms — think a typical apartment living room or a bedroom setup with a 50-inch or 55-inch TV. In larger, open-plan spaces, the soundstage can start to feel a bit narrow and the system may struggle to fill the room at comfortable listening levels. For rooms beyond roughly 300–350 square feet, you might want to consider a more powerful option.

The soundbar is designed to be wall-mountable, but LG does not include a wall mount bracket in the box. You will need to purchase a compatible bracket separately. The unit does have the appropriate keyhole slots on the rear for mounting, so compatible universal brackets generally work fine. Just confirm the bracket spacing matches before buying.

Clear Voice Plus analyzes the audio signal in real time and boosts the frequency range associated with human speech, making dialogue easier to understand without requiring you to raise the overall volume. In practice, it is most noticeable on TV dramas, news broadcasts, and anything where actors tend to speak quietly or mumble. It is not a dramatic transformation, but for everyday TV watching, most users find it makes a genuine difference.

At moderate volume levels, the subwoofer is unlikely to cause issues in most apartment situations. However, at higher volumes it can produce a resonant, boomy quality that travels through walls and floors more than a tighter, more controlled subwoofer would. If you live in a building with thin walls or sensitive neighbors, keeping the subwoofer level dialed back a notch or two is a reasonable precaution.