LG 7.1.3-Channel s90tr Home Theater Soundbar with Wireless Subwoofer and Rear Speakers

LG S90TR — A Complete 7.1.3 Atmos System in a Box

The LG S90TR ships with a soundbar, wireless subwoofer, and two wireless rear speakers — a complete 7.1.3-channel Dolby Atmos system for roughly $1,000. No receiver, no speaker wire, no mounting. Plug the bar into HDMI eARC, position the sub and rears, and the system self-calibrates. It''s the lowest-effort path to genuine surround sound with height channels.

Channel Configuration

The soundbar houses the front left, center, and right channels plus two up-firing Atmos height drivers that bounce off the ceiling. The wireless subwoofer handles bass below roughly 80Hz. The two rear speakers each contain a full-range driver and an up-firing Atmos driver, creating rear height effects that the soundbar''s ceiling bounce alone can''t produce.

The 7.1.3 configuration means: three front channels, two side/surround channels (from the rear speakers), two rear surround channels, one subwoofer, and three height channels (two front, one center from the bar''s up-firing drivers plus the rear up-firing drivers). In practice, the surround immersion is significantly better than any soundbar-only setup because sound actually comes from behind you rather than being simulated.

Sound Performance

Total system output is 810 watts. The subwoofer produces bass down to approximately 35Hz — adequate for movie explosions, music bass lines, and gaming rumble. The wireless subwoofer placement is flexible; it communicates with the bar via a proprietary wireless protocol with no audible latency.

Dialogue clarity through the center channel is good but not exceptional — in very loud action scenes, voices can be slightly overwhelmed by surround effects. Using the "Clear Voice" mode boosts dialogue but slightly reduces surround immersion. This is a compromise inherent in soundbar-based systems where the center channel shares a relatively small enclosure with other drivers.

Atmos height effects are more convincing with the rear speakers than without, because the rear up-firing drivers complete the overhead sound field. Rain, helicopter flybys, and ambient atmospheric sounds create a noticeable bubble of sound. Ceiling height and material still affect performance — flat drywall ceilings under 9 feet produce the best results.

LG TV Integration

Connected to an LG TV via eARC, the S90TR offers seamless integration: TV remote controls soundbar volume, the TV''s sound settings adjust the bar''s modes, and WOW Orchestra mode combines the TV''s speakers with the soundbar for a wider soundstage. This integration makes the S90TR the default recommendation for LG TV owners who want surround sound without a receiver.

Connectivity

One HDMI eARC output, one HDMI input (4K 120Hz passthrough — important for gamers who want to route a console through the bar), optical input, and Bluetooth 5.0. Wi-Fi supports AirPlay 2 and Chromecast. The HDMI input with 4K/120Hz passthrough means the bar can sit between your console and TV without downgrading video quality — a feature most competing soundbars lack.

Considerations

• Complete 7.1.3 Atmos system requiring no additional purchases.
• Wireless rear speakers with up-firing drivers create genuine surround with height effects.
• LG TV integration is seamless and adds WOW Orchestra mode.
• 4K/120Hz HDMI passthrough for gaming without quality loss.
• Self-calibration via AI Room Calibration adjusts for room acoustics.

• Dialogue clarity can be overwhelmed during loud scenes.
• Rear speakers require nearby power outlets — wireless audio, but wired power.
• Bass is adequate but not as deep or punchy as dedicated home theater subwoofers.
• At $1,000, an AV receiver + bookshelf speakers produces better raw sound quality, but with far more complexity.

The LG S90TR is the best complete surround sound system for buyers who want rear speakers and Atmos height channels without installing a receiver, running speaker wire, or mounting anything to the ceiling. LG TV owners get additional integration benefits. Audiophiles will find better sound from a traditional receiver setup, but most households will find the S90TR''s convenience-to-performance ratio hard to beat.