LG S90TR 7.1.3 Review: Wireless Dolby Atmos Surround

Who Should Buy It

Key Specifications

Overview

The LG S90TR 7.1.3 is a mid-range home theater soundbar designed to pair with LG OLED evo TVs. The listing highlights a 7.1.3 channel layout, wireless rear surround speakers, a wireless subwoofer, and WOWCAST built-in for wireless Dolby Atmos. It also includes Dolby Atmos and DTS:X support and an up-firing center channel intended to improve dialogue clarity. On paper, this positions the S90TR as a step up from basic soundbars because it ships with discrete rear speakers.

The product listing leaves some technical details unpublished. Specific driver sizes, total wattage, and physical dimensions are not provided. Buyers who prioritize exact power output or need to confirm clearance under a TV will need to research those measurements separately. The listing's feature set still suggests a convenient wireless surround package, especially for LG TV owners who want the WOW Orchestra feature that synchronizes soundbar and TV speakers.

Sound Quality

The published 7.1.3 channel design suggests a wide front stage with three height channels and separate rear speakers. A center up-firing driver is called out as a way to focus dialogue detail, which is useful for movies and TV shows. With Dolby Atmos and DTS:X decoding, the soundbar is built to handle object based audio from streaming apps and Blu-ray players. The listing also mentions immersive 3D spatial sound as a processing mode meant to expand the soundfield.

Without published wattage or driver specifications, it is hard to judge how loud or dynamic the S90TR can get. The room calibration feature, which uses a built-in microphone, may help tailor the sound to the room, but the listing does not state whether the calibration adjusts individual channels or only overall delay. The three up-firing channels should add height cues for Atmos content, and the separate rear speakers should provide more convincing surround effects than a single bar alone.

Surround, Atmos and Audio Formats

The S90TR supports Dolby Atmos and DTS:X, the two main object based surround formats. What makes this package distinct from many mid-range bars is the inclusion of wireless rear surround speakers in the box. The listing says these rear speakers connect wirelessly and do not need a special receiver, which reduces clutter. For Atmos and DTS:X tracks, those rears can place sounds behind the listener, while the up-firing drivers create height effects.

WOWCAST built-in is another headline feature. It is described as a way to experience Dolby Atmos and DTS:X without visible wires, which suggests a wireless audio link from a compatible LG TV to the soundbar. The listing does not state whether WOWCAST requires a specific LG TV model or whether a wired HDMI eARC connection is also needed for non-LG sources. Buyers with a recent LG TV will likely get the most benefit from this feature.

The center up-firing speaker is unusual. Most Atmos soundbars use up-firing drivers for left and right height channels, but a dedicated center up-firing driver is meant to lift dialogue and anchor it to the screen. On paper, this could improve vocal clarity in action scenes. DTS:X support rounds out the format coverage, though the listing does not mention DTS:X Pro or IMAX Enhanced.

Subwoofer and Bass

The package includes a wireless subwoofer, which is typical for mid-range soundbars. The listing does not publish the subwoofer driver size, amplifier wattage, or frequency response. That makes it difficult to predict how deep or controlled the bass will be. A wireless subwoofer is convenient because it can be placed away from the TV without a long cable, but its performance remains unknown from the published information.

The rear surround speakers are also wireless, which adds flexibility to the setup. The listing specifically states that no special receiver is needed for the rear speakers, meaning the soundbar likely handles amplification and wireless transmission to those speakers. Buyers should note that wireless in this context usually means each speaker still needs a power outlet. The listing does not state battery power or the wireless protocol used for the subwoofer or rear speakers.

• Wireless subwoofer included in the box
• Rear surround speakers connect wirelessly with no special receiver
• Subwoofer driver size and wattage not published
• The listing does not specify the wireless protocol or frequency band
• Placement flexibility is improved but power outlets are still needed

Connectivity and TV Setup

The listing highlights VRR and ALLM passthrough with a refresh rate up to 120Hz, which is relevant for gamers using a console or PC. This means the soundbar can pass through variable refresh rate and auto low latency mode signals, assuming the TV and source support them. However, the listing does not state the number of HDMI inputs, whether the soundbar has HDMI eARC, or the HDMI version. Buyers who need multiple HDMI ports should verify those details before purchasing.

For wireless audio, WOWCAST built-in is meant to send Dolby Atmos and DTS:X from a compatible LG TV to the soundbar without a physical HDMI cable. The listing also mentions Chromecast and AirPlay 2 support for audio streaming. Google Assistant and Alexa are listed as supported voice assistants, though the listing does not say whether the soundbar has built-in microphones or relies on external smart speakers for voice commands.

One remote control is possible through the WOW Interface, which lets the soundbar and LG TV be controlled together. This is convenient for LG TV owners, but the listing does not describe a dedicated mobile app for setup or advanced adjustments. The absence of published HDMI input details is a notable gap for buyers trying to plan a multi-device setup.

Features, Apps and Voice Control

The LG S90TR 7.1.3 includes several features aimed at convenience and integration. WOW Orchestra lets the soundbar play in sync with LG TV speakers, which can increase the overall soundstage. Voice assistant support includes Google Assistant and Alexa, and streaming compatibility covers Chromecast and AirPlay 2. The listing presents these as ways to control the soundbar and stream music without needing a separate device.

Advanced room calibration uses a built-in microphone to measure the room and adjust audio settings. The listing does not specify whether calibration is automatic or if there are manual tweaks. The WOW Interface provides one remote control for TV and soundbar, but the listing does not mention a smartphone app. Buyers who like to fine tune EQ or night mode may find the lack of app information a drawback.

Gaming features include VRR and ALLM passthrough up to 120Hz, which reduces screen tearing and input lag for supported sources. The soundbar also includes immersive 3D spatial sound, which is a processing mode separate from Atmos and DTS:X. The center up-firing speaker is another dedicated feature meant to enhance dialogue, making it a good fit for TV shows and movies.

Design and Fit Under a TV

The LG S90TR 7.1.3 is a black soundbar designed to match LG OLED evo TVs. The listing does not publish the width, height, depth, or weight of the soundbar, subwoofer, or rear speakers. Without those dimensions, buyers cannot confirm whether the bar will fit in front of a TV stand or block the TV's IR sensor. The center up-firing driver adds height to the main bar, so clearance should be checked.

The rear surround speakers and wireless subwoofer are meant to reduce visible cable clutter. The listing describes the rear speakers as wireless and the subwoofer as wireless, but they still need power. The overall aesthetic is described as black, and the matching design with LG OLED evo TVs suggests a cohesive look. Buyers with limited space should seek the missing dimensions from other sources before committing.

The inclusion of rear speakers means this is not a compact single bar system. It requires space behind or beside the seating area for the rear channels. The main bar's design includes an up-firing center driver, which is visible from the top and may reflect off the ceiling. This is a standard approach for Atmos bars, but the exact height of the bar is not published.

Who Should Buy It

This soundbar is best for LG TV owners, especially those with an OLED evo model, because features like WOW Orchestra and WOWCAST built-in are tailored to that ecosystem. Buyers who want a complete surround package out of the box will appreciate the included rear speakers and wireless subwoofer. The 7.1.3 layout with Atmos and DTS:X support is well suited to movie fans.

Gamers with a console that supports VRR and ALLM will find the 120Hz passthrough useful, assuming the rest of their setup is compatible. Streamers who use Chromecast or AirPlay 2 can send audio directly to the soundbar. Voice assistant users can choose Google Assistant or Alexa, though the exact integration method is not detailed.

Buyers who need exact wattage, driver sizes, or dimensions should look elsewhere or contact the manufacturer, because the listing leaves those out. Those who want a simple two channel upgrade without rear speakers may find this package overkill. The mid-range positioning means it is not a budget bar, but it offers more than a basic 2.1 system.

Alternatives Worth Considering

The Sonos Beam Gen 2 is a compact smart soundbar with Atmos support, but it lacks included rear speakers and a separate subwoofer. The Bose Smart Soundbar 600 is another small Atmos option, though its surround and bass require additional purchases. Both are strong alternatives for buyers who prioritize size and app ecosystems over a complete out of the box package.

The Samsung HW-Q600C and Polk Signa S4 are mid-range Atmos bars with wireless subwoofers, but they do not include rear surround speakers in the box. The Vizio V-Series and Sony HT-S400 are budget oriented options that focus on simpler stereo or virtual surround rather than a full 7.1.3 channel setup. The LG S90TR's main advantage is the included wireless rear speakers and the WOW integration with LG TVs.

Buyers who do not own an LG TV may not benefit from WOW Orchestra or WOWCAST built-in, making alternatives like the Sonos Beam Gen 2 or Bose Smart Soundbar 600 more appealing if they already use those ecosystems. The LG S90TR's lack of published HDMI input details also makes it harder to compare connectivity with those models.

Verdict

The LG S90TR 7.1.3 is a feature rich mid-range soundbar that stands out for including wireless rear speakers and WOWCAST built-in. Dolby Atmos, DTS:X, a center up-firing driver, and VRR/ALLM passthrough give it strong appeal for LG TV owners and gamers. The listing describes a convenient wireless surround package that addresses many of the limitations of single bar systems.

The biggest drawback is the missing technical detail. Power output, driver sizes, HDMI input count, and dimensions are not published, so buyers cannot fully assess performance or fit. For an editorial review based only on the listing, those gaps prevent a higher score. The sound quality features look solid on paper, but the unknown specifications introduce some risk.

Overall, the S90TR earns an 81 out of 100. It is an excellent candidate for LG TV owners who want a wireless Dolby Atmos system with rear speakers, but shoppers who need verified specs or a dedicated app should explore alternatives. The combination of 7.1.3 channels, wireless rears, and WOWCAST built-in gives it a distinct place in the mid-range soundbar category.

Strengths and Limitations

Alternatives to Consider

Polk Audio MagniFi Max AX 5.1.2

Buyers who want a mid-range 5.1.2 Atmos soundbar with a large wireless subwoofer and clear dialogue enhancement.

Read the Polk Audio MagniFi Max AX 5.1.2 review →

Sony 6 5.1ch

Buyers who want a true 5.1ch Atmos system with rear speakers and a subwoofer at a midrange price.

Read the Sony 6 5.1ch review →

LG Suite H7 9.1.6 Gen 3

LG TV owners who want a mid-range Atmos soundbar with expandable wireless speakers and AI room calibration.

Read the LG Suite H7 9.1.6 Gen 3 review →

Head-to-Head Comparisons

• LG S90TR 7.1.3 vs Polk Audio MagniFi Max AX 5.1.2 Compare →

Questions Buyers Ask