LG GX Soundbar Soundbar Review

Tested using Methodology v0.8
Reviewed Aug 27, 2020 at 08:10 am
LG GX Soundbar Picture
7.6
Mixed Usage
8.3
Dialogue/TV Shows
7.4
Music
7.2
Movies
Channels
3.1

The LG GX Soundbar is a 3.1 setup from LG's 2020 lineup. It has a uniquely thin look so you can wall-mount it beneath an LG wallpaper OLED TV. It can also be table-mounted if you prefer, although it's quite tall and can obscure your screen. It comes with a wireless subwoofer, which helps to give it a somewhat boomy sound profile. While it lacks low-bass, it comes with several EQ presets to help you get the best sound for your audio preferences. It also has a dialogue enhancement feature which can further improve vocal clarity, and there are many physical inputs available. It even supports Atmos content, but it has to downmix it into stereo to play it. Overall, this soundbar is best-suited for a harmonious and aesthetically-pleasing look with LG's own TVs, but it can still deliver a good overall audio experience, even on its own.

Our Verdict

7.6 Mixed Usage

The LG GX Soundbar is good for mixed use. This soundbar has a bit of a boomy sound profile with a touch of brightness. Although it comes with a wireless subwoofer, it also lacks thumpy low-bass. Luckily, it comes with several EQ presets as well as a few other sound enhancement features to help you make the most out of your audio. If you like to watch movies, this soundbar also supports Atmos content. However, it has to downmix it into stereo to play it, which doesn't produce as immersive of an audio experience as a soundbar with satellites. It can also get loud enough for use in a large or crowded room but there's some compression at max volume. On the upside, you can also stream podcasts or music to it using Bluetooth.

Pros
  • Bluetooth compatible.
  • Supports Atmos.
  • Several EQ presets available.
  • Dialogue enhancement feature available via companion app.
Cons
  • Struggles to produce low-bass.
  • Wide and tall bar.
8.3 Dialogue/TV Shows

The LG GX Soundbar is great for dialogue and TV shows. It has a dedicated center channel that can produce fairly clear and accurate dialogue. There's also a dialogue enhancement feature available via its companion app if you want to further improve vocal quality. You can stream your favorite podcasts and audiobooks directly to the bar using Bluetooth. However, while it can get pretty loud, there's some compression at max volume.

Pros
  • Bluetooth compatible.
  • Dialogue enhancement feature available via companion app.
Cons
  • Wide and tall bar.
7.4 Music

The LG GX Soundbar is decent for music. As it comes with a wireless subwoofer, it has a somewhat boomy but slightly bright sound profile that some users may enjoy. It struggles to produce low-bass, which could affect genres like EDM and hip-hop. However, if you prefer a different sound, there are a few EQ presets available to help you find a sound that best fits your preferences. The bar can also get loud enough to fill a large or crowded room. However, there's some thumping and compression artifacts present at max volumes.

Pros
  • Bluetooth compatible.
  • Several EQ presets available.
Cons
  • Struggles to produce low-bass.
  • Wide and tall bar.
7.2 Movies

The LG GX Soundbar is decent for movies. It has a bit of a boomy sound profile, but some movie lovers may find it struggles to produce a satisfyingly thumpy low-bass. However, it has several EQ presets available to help you get the best sound for your preferences. It can also play Atmos content, although it has to downmix it into stereo to play it. It can get pretty loud too but there's some thumping and compression artifacts present at max volume.

Pros
  • Supports Atmos.
  • Several EQ presets available.
  • Can be used as a hub between your TV and Blu-ray player.
Cons
  • Downmixes surround content into stereo.
  • Struggles to produce low-bass.
  • Wide and tall bar.
  • 7.6 Mixed Usage
  • 8.3 Dialogue/TV Shows
  • 7.4 Music
  • 7.2 Movies
  1. Update 9/21/2020: The Dynamics tests have been reconducted due to a value input bug.

Test Results

perceptual testing image
Market Context
Market Context
Market Context

The LG GX Soundbar is a soundbar from LG's 2020 lineup. This 3.1 setup is designed to be wall-mounted below an LG wallpaper OLED TV for a sleek and stylish look. It also comes with a similarly sleek subwoofer. The bar can play Atmos content, although only by downmixing it into stereo, which isn't as immersive as setups that use satellites like the LG SN11RG. Its main competitors are the Sony HT-G700, the LG SN6Y, and the Samsung HW-T650.

Design
Design
Style - Bar

The LG GX Soundbar is a very stylish and sleek looking soundbar made with dark-colored plastic and a tight fabric wrap. Its unique thin teardrop shape is meant to complement TVs from LG's OLED series such as the LG GX OLED and when mounted below these TVs, its slim, long profile makes it look more like wall art than a bulky soundbar. You can also stand it at an angle in front of your TV if you prefer.

Design
Style - Subwoofer

The LG GX's subwoofer is made from melamine and plastic. Its front face has a thin fabric wrap that can easily rip or collect dust.

Design
Style - Satellites

This soundbar doesn't have any satellites.

Design
Dimensions - Bar
Bar Width 56.9" (144.6 cm)
Bar Height 5.9" (15.0 cm)
Bar Depth 1.3" (3.3 cm)

The LG GX Soundbar is very tall and wide. It's meant to be wall-mounted, but if you want to place it on your console table, it won't fit between the legs of a 55" TV. It's a pretty tall bar, even though it's at an angle when standing, and it can easily obscure the bottom of your TV screen.

Design
Dimensions - Subwoofer
Sub Width 7.1" (18.1 cm)
Sub Height 15.4" (39.2 cm)
Sub Depth 11.5" (29.2 cm)

The LG GX's subwoofer is about the size of an average desktop PC. It's not very large and can fit beside your TV or couch with little problem.

Design
Dimensions - Satellites
Sat Width N/A
Sat Height N/A
Sat Depth N/A

The LG GX Soundbar doesn't have any satellites in its setup.

Design
Back - Bar
Bar Mounting Type
Proprietary

The back of this soundbar has two openings: one for its power cable and another for its inputs. There are also divots for its two stand brackets as well as a groove so that you can wall-mount it. The supplies for wall-mounting it come in the box too, which is nice.

Design
Back - Subwoofer
Enclosure
Ported

The back of the subwoofer has its port as well as its power cable. There's also a pairing button so you can wirelessly connect the subwoofer to the soundbar.

Design
Back - Satellites
Sat Mounting Type
N/A

This setup doesn't have any satellite speakers.

7.0
Design
Build Quality

The LG GX Soundbar has a decent build quality. Its sides and back are made of plastic while its front is covered by a tight fabric from end to end. However, the fabric feels a little thin and can be prone to ripping or collecting dirt. There are two metal bracket holders on the back so that you can wall or table-mount it. The subwoofer's front side is also covered in a thin fabric and is also prone to ripping or getting dirty. Unlike the bar, its sides are made from melamine while there's plastic on its top, back, and bottom sides.

Design
In The Box
HDMI Cable Length
5.0 ft (1.5 m)
Digital Optical Cable Length
N/A

  • HDMI cable
  • 2x Power cables
  • Remote
  • 2x AAA batteries for the remote
  • 2x Wall brackets with wall template
  • 2x Stand brackets
  • Manuals

Sound
7.3
Sound
Stereo Frequency Response
ST Slope
-0.49
ST Std. Err.
2.87 dB
Low-Frequency Extension
51.9 Hz
High-Frequency Extension
19.9 kHz

The LG GX Soundbar has a decent stereo frequency response. Although it struggles to produce low bass, the rest of its range is pretty punchy and boomy, which is suitable for action-packed movies or EDM music. It also has a slightly bright treble. If you prefer a different sound, this soundbar has several EQs available.

Sound
Stereo Raw Frequency Response
7.5
Sound
Stereo Soundstage
Crosstalk Error
2.08 dB

The LG GX Soundbar has a good stereo soundstage. Although the soundstage feels about the size of the bar and the bar doesn't do anything to make it sound any wider, its focus is good. Objects sound like they're coming from pinpoint locations instead of more general areas.

8.3
Sound
Stereo Dynamics
ST SPL @ Max Volume
97.5 dB SPL
ST DRC @ Max Volume
1.64 dB

Update 09/21/2020: We've discovered a value input bug that would cause the Dynamics box results to be slightly off. All soundbars reviewed since January 30th, 2020 have been updated.

The LG GX Soundbar has great stereo dynamics. It can get really loud, which is well-suited for large or crowded rooms. However, there are some thumping and compression artifacts present at max volume.

7.4
Sound
Stereo Total Harmonic Distortion
ST Weighted THD @ 80
0.53
ST Weighted THD @ Max Volume
2.53

This soundbar has a decent THD performance. At a normal listening volume, the amount of THD falls within acceptable limits, resulting in pure and clean audio reproduction. That being said, the THD jumps a bit at max volume, but this can be difficult to hear with real-life content.

6.7
Sound
Center
C Localization
Discrete
C Slope
1.16
C Std. Err.
6.36 dB
C SPL @ Max Volume
90.2 dB SPL
C Weighted THD @ 80
4.15
C Weighted THD @ Max Volume
5.16

The LG GX Soundbar is a 3.1 setup with an okay center channel performance. Although it has a dedicated center speaker, its frequency response is a little uneven, particularly in the low-mid, which may affect deeper voices. However, bass doesn't normally play on a center channel, so it shouldn't sound boomy. The rest of the response is fairly even, resulting in clearer and more accurate dialogue in movies.

5.1
Sound
Surrounds
Sr Localization
Stereo (Downmix)
Rears
N/A
Sr Slope
-0.49
Sr Std. Err.
2.87 dB
Sr SPL @ Max Volume
97.5 dB SPL
Sr Weighted THD @ 80
0.67
Sr Weighted THD @ Max Volume
2.62

The LG GX Soundbar has a disappointing surrounds performance. As it's a 3.1 setup, it uses its left and right speakers to downmix surround content into stereo. This results in a less than accurate and clear representation of surround objects, which affects immersion into your audio. These objects are also perceived as coming from in front of you rather than from the sides or behind you.

4.6
Sound
Height (Atmos)
H Localization
Surround (Downmix)
H Slope
-1.72
H Std. Err.
5.13 dB
H SPL @ Max Volume
86.1 dB SPL
H Weighted THD @ 80
0.94
H Weighted THD @ Max Volume
1.32

The LG GX Soundbar has a poor height performance. It downmixes surround sound into stereo in order to play it. This results in a less immersive sound experience than that produced by soundbars with upward-firing speakers such as the LG SN11RG.

6.9
Sound
Sound Enhancement Features
Room Correction
No
Dialogue Enhancement
Yes
Auto-Volume/Night Mode
Yes
Subwoofer Level Adjustment
Yes
Bass Adjustment
Yes
Treble Adjustment
Yes
EQ
Presets
Surround Level Adjustment
No
Rear Level Adjustment
N/A
Height Level Adjustment
No
Virtual Surround
Yes

The LG GX Soundbar has fair sound enhancement features. It has several EQ presets: 'AI Sound Pro', 'Standard', 'Bass Blast', 'Music', and 'Movie'. The 'AI Sound Pro' feature, in particular, is advertised to optimize audio settings depending on the content you're playing, but we don't currently test this feature. There's also a dialogue enhancement feature as well as a virtual surround feature. However, it lacks a room correction feature that could help cater its audio performance to your specific room.

Connectivity
Connectivity
Physical Inputs - Bar
Optical Audio In
1
HDMI ARC
1 (shared)
HDMI Out
1 (shared)
Full HDMI In
1
Analog Audio In 3.5mm (Aux)
No
USB for Files
1
Ethernet
No

The LG GX Soundbar has a wide array of inputs. Thanks to its HDMI ports, you can use it as a hub for different devices like your TV and gaming console. There's also a USB port if you want to play audio from a flash drive.

10
Connectivity
Audio Format Support - ARC
eARC
Yes
Dolby Atmos
Yes
Dolby Digital
Yes
Dolby Digital Plus
Yes
DTS
Yes
DTS:X (eARC only)
Yes
Dolby TrueHD (eARC only)
Yes
DTS-HD MA (eARC only)
Yes
5.1 PCM (eARC only)
Yes

The LG GX Soundbar supports all common formats over its HDMI ARC connection. It also supports eARC and can play object-based surround signals as well as lossless formats.

10
Connectivity
Audio Format Support - Full HDMI In
Dolby Atmos
Yes
DTS:X
Yes
Dolby Digital
Yes
Dolby Digital Plus
Yes
DTS
Yes
Dolby TrueHD
Yes
DTS-HD MA
Yes
5.1 PCM
Yes

This soundbar has a Full HDMI In port, so you can use it as a hub between an external device like a Blu-ray player and your TV. It supports all common audio formats, including Dolby Atmos and DTS. However, it has to downmix these audio formats into stereo, which won't produce the most immersive experience.

10
Connectivity
Audio Format Support - Optical
Dolby Digital
Yes
DTS
Yes

The LG GX Soundbar has outstanding audio format support via its Optical port. It supports Dolby Digital and DTS content, which are usually found on Blu-ray discs as well as streaming platforms.

6.0
Connectivity
Wireless Playback
Bluetooth
Yes
Wi-Fi
No
Chromecast built-in
No
Apple AirPlay
No

The LG GX Soundbar has mediocre wireless playback options. It can play audio wirelessly via Bluetooth and that's it.

Connectivity
Other Input Specifications
4k @ 60 Hz Passthrough
Yes
4k @ 60 Hz @ 10 bit Passthrough
Yes
4k @ 60 Hz @ 4:4:4 Passthrough
Yes
HDR10 Passthrough
Yes

When used as a hub between your TV and another source like a gaming console, the LG GX Soundbar can pass 4k content at 60Hz. Text sent using this signal looks crisp.

Connectivity
Connectivity - Subwoofer
Sub Wireless
Yes

This sub wirelessly connects to the bar and it only needs its power cable.

Connectivity
Connectivity - Satellites
Sat Wireless
N/A

This soundbar doesn't have any satellites.

Additional Features
Additional Features
Interface
Display
Yes

The LG GX Soundbar has a small text screen in the middle of the bar behind its fabric covering. It displays the current input, volume levels, and any other level changes you make such as sub level adjustments.

Additional Features
Bar Controls

This bar has a few physical buttons located on the right side of the bar. You can turn the bar on and off, switch inputs, and adjust for volume.

Additional Features
Remote
Universal Remote
No

The LG GX Soundbar has a basic remote that lets you easily change most settings. However, the dialogue enhancement feature is only available via the companion app. You also won't be able to use this device as a universal remote to control your TV.

Additional Features
App
App Name LG Music Flow Bluetooth
iOS No
Android Yes
Acts as the Remote
Yes
Controls Soundbar's Settings
All
Casts Device Files
Audio Files Only

The LG GX Soundbar is compatible with the LG Music Flow Bluetooth app. It's currently limited to Android devices, and you can control everything with this bar. You can also create audio playlists as well as use the dialogue enhancement feature only through the app.

Additional Features
Other Features
Power Saving
Standby
HDMI CEC (TV Remote Control)
Yes

The LG GX Soundbar goes into standby after being idle for some time but the manufacturer doesn't specify a set time. As it also supports HDMI CEC, you can use your TV's remote to control some of your soundbar's features such as volume and input control.

Compared to other soundbars

The LG GX Soundbar is a 3.1 channel setup from LG's 2020 lineup. Unlike other soundbars like the LG SN6Y, it's designed to be wall-mounted with LG's wallpaper OLED TVs for an aesthetically pleasing and sleek look. It can also be table-mounted, but although it's thinner than most other soundbars, it's quite tall as well as long and can easily obscure your TV screen. That said, it comes with a subwoofer and it can support Atmos content, although it has to downmix it into stereo to play it. If you're looking for more soundbars, check out our recommendations for the best soundbars with subwoofer, the best Dolby Atmos soundbars, and the best soundbars for music.

Sony HT-G700
SEE PRICE
Amazon.com

The LG GX Soundbar is a better soundbar for dialogue and TV shows than the Sony HT-G700. The LG is better balanced and has more sound enhancement features. Even though it has to downmix surround content into stereo just like the Sony, its surround performance is better. It also has a USB port so you can listen to audio from a flash drive and it has a companion app. However, the Sony feels better built, and it has a better height performance.

LG SN8YG
SEE PRICE
BestBuy.com

The LG SN8YG is a better soundbar for movies than the LG GX Soundbar. The SN8YG is a 3.1.2 setup that feels better built, it has a better performing center channel, and since it has up-firing speakers on the bar, its height performance is more immersive than the GX. The SN8YG has a room correction feature too. However, the GX is a 3.1 setup with a better balanced and neutral sound profile. The GX also has a better surround performance, even though it downmixes this content into stereo in order to play it. The GX can also get louder and there are less thumping and compression artifacts present at max volume. 

Samsung HW-T650
SEE PRICE
BestBuy.com

The LG GX is a more versatile 3.1 setup than the Samsung HW-T650. The LG's surround performance is better and it's able to play Atmos content. It also supports eARC as well as DTS:X and it can passthrough 4k @ 60Hz. The LG even has a companion app that allows you to save audio playlists as well as access a dialogue enhancement feature. However, the Samsung feels better built. While it can't get as loud as the LG, it can reach its max volume with less compression.

LG SN6Y
SEE PRICE
BestBuy.com

The LG GX Soundbar is a much better performing 3.1 setup overall than the LG SN6Y. The GX has a better-balanced sound profile and it supports Atmos. Even though it downmixes surround content into stereo, its has a better surround and height performance than the SN6Y. The GX can also get louder, it supports more audio formats such as eARCand DTS:X, and it feels better built. 

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