LG SL9YG Dolby Atmos soundbar review

An ambitious Dolby Atmos soundbar Tested at £899 / $999

LG SL9YG review
(Image: © Future)

What Hi-Fi? Verdict

This LG soundbar implements Dolby Atmos well, which makes the basic sonic flaws in its performance all the more disappointing


  • +

    Impressive sense of Atmos height

  • +

    Floor-shaking bass

  • +

    Google Assistant support


  • -

    Integration issue between bar and sub

  • -

    Lacks dynamism and punch

  • -

    Slight hard edge

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“Sometimes you gotta run before you can walk,” Tony Stark tells his virtual assistant in Iron Man, as he tries out his new MkII suit for the first time.

But what might be sound logic for a Marvel superhero character, doesn’t transfer to a cutting-edge soundbar, where nailing the basics is crucial. And it seems LG could do with a little reminder of that.


LG SL9YG sound

(Image credit: Future)

Tuned and designed with input from the guys at Meridian, LG SL9YG is a Dolby Atmos 4.1.2-channel soundbar comprising four 2cm drive units (the ‘4’) firing outwards, two 6cm upward-firing drivers (‘2’) and a wireless subwoofer (‘1’).

Those upward-firing drivers aim to make the most of Atmos soundtracks by increasing the height of the soundfield, which they do very well indeed. We stream Mowgli: Legend Of The Jungle (Netflix) in Atmos, and the jungle takes on an atmospheric, ambient dimension. 

There’s real height to bird song, swooping eagles, rustling leaves, buzzing flies and squealing monkeys in the canopy, which occasionally cause us to shift our eye-line to the top of the TV.

In Lost In Space (Netflix), gusts of atmosphere whirl around the above it, while in Bohemian Rhapsody (4K Blu-ray) the Live Aid crowd participation audibly fills the height channels. You don’t get the sense of them enveloping you, as with a discrete Atmos system, but their unique contribution is especially clear when we compare the non-Atmos disc through the SL9YG.

It’s all quite subtly done, although you can adjust the balance of the upward drivers using the remote if you want the effect to be a little more stated. It’s worth noting that by pressing the remote’s ‘info’ button you can see whether the bar is receiving and playing an Atmos signal, too.

Within the constraints of a soundbar, compared to the ‘real deal’ surround sound package with ceiling speakers, the Atmos promise is more or less delivered on. The problem is that the LG falls short in more basic sonic areas. 

It’s an impressively loud, full-bodied and bass-laden sound that’s hard not to be immediately impressed with. Voices have substance, volume is abundant and action scenes have a sense of pace and emergency to them. The SL9YG races through the soundtrack that scores the wolf hunt in Mowgli, while the subwoofer makes the most of the elephant stampedes and Shere Khan's growls.

LG SL9YG tech specs

(Image credit: Future)

Hi-res support 24-bit/192kHz

Dimensions (hwd) 5.7 x 122 x 14.5cm

Inputs HDMI in/out, optical, USB

Google Assistant voice control Yes

Chromecast Yes

Wi-fi Yes

Bluetooth Yes

But while you can identify Christian Bale’s voiceover behind the moving mouth of the animated black panther, Bagheera, his booming baritone sounds unnatural and unforgivingly hard-edged – it’s borderline resonant. The subwoofer steps in to thicken out his voice, but a lack of integration between the bar and sub causes notable suffering in the midrange/upper-mid frequencies.

They are lacking in presence, clarity and insight and the tonal balance feels skewed, no matter how much we play with the EQ settings. Ultimately, we are left craving a more solid, warmer and smoother sound.

Detail is fine, if not particularly nuanced, but in terms of both dynamic range and punch the LG leaves much to be desired, especially when compared to the likes of Dali’s similarly-priced, five-star Kubik One (£799).

While the soundfield certainly beams in every direction, the presentation feels shy to come out towards your listening position, let alone further out into a room. That could be due to the possible tuning of the bar with LG’s optional wireless rear speakers (SPK8-S, £150 per pair), which would undoubtedly aid a more enveloping soundfield.

That lack of midrange transparency and solidity means the LG doesn’t do justice to a hi-res music library. We stream Biffy Clyro’s rendition of The Modern Leper and even in the preferred ‘Music’ mode, the presentation feels mashed. It doesn’t try overly hard to peel more than the surface layer of Ludovico Einaudi’s piano playing either.


LG SL9YG features

(Image credit: Future)

Aside from the sound, the LG SL9YG is versatile and has plenty of useful features. There are network streaming smarts and built in wi-fi, trumping many of its rivals, including our favourite at this price, the Dali.

The SL9YG supports Google Chromecast, allowing you to stream music directly to the soundbar from compatible apps such as Spotify, Tidal, Deezer and Google Play Music. Hi-res files (up to 24-bit/96kHz) stored on your network can be played back directly via Bluetooth, while you can also hook it up to your TV via HDMI (HDMI ARC output, HDMI input) or optical. A USB socket completes the connections list.

LG’s commitment to the Google platform extends to built-in Google Assistant voice control so you can use the soundbar’s mics to ask questions, control playback and drive a Google-based multi-room music system. You can initiate commands with a simple “Hey Google” or by pressing the dedicated Assistant button on the remote.


LG SL9YG build

(Image credit: Future)

If you’ve splashed out good money for a sleek and slender new TV, you will be looking for something equally attractive to complement it. LG has come up trumps here with the SL9YG’s sleek, height-conscious casing and brushed silver finish. The top touch buttons and front-facing LED display are discretely placed too.

Size-wise, the SL9YG has been designed with 55in TVs in mind, and stretches neatly across the width of one. However, at 122cm wide, it looks right at home sat in front of 50in and 65in sets too.

Besides lying it flat in front of your TV, the SL9YG can be flipped 90 degrees and mounted flush against a wall. A built-in gyroscope works out the bar’s positioning and alters its audio processing accordingly.

It also switches the soundbar’s main display from the middle of the front of the unit to the top, so you can still see what it's up to.


LG clearly has designs on being at the forefront of soundbar technology, and the Dolby Atmos certification on the SL9YG – and a number of its premium soundbars – is designed to create the most immersive audio experience from the convenience and relative affordability of a single bar. It implements the surround sound technology well, too – which makes the LG’s sonic shortcomings even more of a shame.

To truly recommend a £899 soundbar, we really need a better integrated, more dynamic and solid sound. But unfortunately, in our eyes, the SL9YG is an example of a soundbar trying to run before it can walk.


  • Sound 3
  • Features 5
  • Build 5


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