Best Soundbars for LG CX OLED TVs: 8 Picks for Every Room (2026)

The LG CX is a 2020 OLED with four HDMI 2.1 ports, eARC on HDMI 2 and optical out, so it can feed a soundbar lossless Dolby Atmos from Blu-ray or streaming apps. This guide compares eight best soundbars for lg cx setups, from a full LG surround system to a premium single bar, and explains which one fits your room, games and your budget tier.

Quick verdict: the best soundbars for lg cx at a glance

If you want one short answer, start with the LG S95TR for a complete surround system, or the Sonos Arc Ultra for a single premium bar with real height. The other six picks cover a mid-tier LG system, a gaming bar, detachable rears, a value Atmos package and clearer dialogue, so check the table first and then the section that matches your room.

Our pick for most CX owners is the LG S90TY, because it gives a 5.1.3 layout, a wireless subwoofer and both Dolby Atmos and DTS:X without rear-speaker boxes. If your room is large and you want rears in the box, the S95TR is the stronger system, while the Arc Ultra leads if you want one bar and nothing else.

Quick comparison table

The table below puts the eight picks side by side so you can see the channel layout, what ships in the box and which sound formats each bar supports. Every model here connects to the CX through HDMI eARC, which is the port that carries lossless Dolby Atmos, so start with the layout and the box contents rather than the brand name.

How we selected the soundbars in this guide

Every model in this guide is a real product sold in the United States, with published specifications from its manufacturer. We compared channel layout, included hardware, Dolby Atmos and DTS:X support, HDMI connections and expansion options, and we left out models that could not be verified or that duplicated a stronger pick at the same price tier.

This guide is based on published manufacturer specifications and independent review coverage. It does not claim testing of its own, and it does not rank products by review scores, because scores use different methods and change with each update. Instead, each pick earns its place for a clear reason: the most complete LG system, the best fit for most CX owners, the cheapest way into real rears, the strongest single bar, the best gaming passthrough, the most flexible rears, the best-value Atmos package, or the clearest dialogue.

The best soundbars for lg cx in detail

Eight bars cover very different rooms and budgets, so the order below follows the decision most CX owners face first: a complete LG system, a simpler LG system, or a focused fix for gaming, bass, price or dialogue. Each section states what is in the box and what it gives up.

LG S95TR: a full surround system for a larger CX

The LG S95TR is the most complete system in this guide, and that is why it leads the list for a larger CX in a main living room. It ships as a 9.1.5-channel system with a wireless subwoofer and two wireless rear speakers in the box, so nothing extra is needed to get real surround and height.

For a CX owner who watches movies most nights, a system with real rear and height speakers has a structural advantage over a single bar, and the S95TR is the only pick here that provides both in the box at this scale. It supports Dolby Atmos and has an up-firing centre channel that keeps dialogue clear, and its HDMI passthrough supports 4K at 120Hz with variable refresh rate and auto low latency mode for a console. The bar suits TVs of 55 inches and up, which covers the 55, 65 and 77-inch sizes.

Buy it if you want a full surround system in one purchase and you have room for four boxes. Skip it if your room is small, you do not want rear speakers, or you want WOW Orchestra, which LG lists for its 2022 and newer TVs rather than the 2020 CX, so the bar still connects by eARC but without that TV-speaker pairing.

LG S90TY: the pick for most CX owners

The LG S90TY is the pick for most CX owners because it covers the formats that matter without the extra boxes of a rear-speaker system. LG lists a 5.1.3-channel layout with 11 speakers and 570 watts, a wireless subwoofer with an 8-inch driver, and a centre up-firing channel that lifts dialogue toward the listener.

For most living rooms, the S90TY hits the practical middle: it decodes both Dolby Atmos and DTS:X, so a Blu-ray collection and streaming apps are both covered, and its HDMI eARC connection supports 4K at 120Hz passthrough for a console. WOWCAST is built in for a wireless link to a compatible LG TV, and optional rear speakers can be added later if the room grows into them. The bar suits TVs of 55 inches and up, which matches the common CX sizes.

Buy it if you want one LG bar and a wireless subwoofer that covers movies, games and music without rear speakers. Skip it if you want rears in the box, since the S80TR includes them at a nearby tier, or if your CX is the 48-inch model and the bar would overhang a narrow stand.

LG S80TR: real rear speakers for less

The LG S80TR is the cheapest way in this guide to get real rear speakers in the box, and that is why it suits a CX owner who wants surround on a tighter tier. LG lists a 5.1.3-channel system with a wireless subwoofer and two wireless rear speakers, so the full surround layout arrives in one purchase.

For a medium living room, the S80TR gives the same basic shape as the flagship LG system: height channels for Atmos, rears behind the sofa, and a wireless subwoofer for the low end. It supports both Dolby Atmos and DTS:X, and it connects to the CX through HDMI eARC, which carries the highest-quality audio the TV can send. Like the other LG bars here, its WOW Orchestra pairing is listed for newer LG TVs rather than the 2020 CX, so expect eARC sound rather than a combined TV-and-bar mode.

Buy it if you want rear speakers in the box and you would rather spend the difference on a mount or a longer HDMI cable. Skip it if you want the up-firing centre channel and higher output of the S90TY, or if your room has no sensible place for rear speakers at all.

Sonos Arc Ultra: a single bar with real height

The Sonos Arc Ultra is the strongest single-bar pick here for buyers who want premium sound without extra boxes. Sonos lists 14 drivers, 15 Class-D amplifiers and a 9.1.4 spatial audio experience, with two up-firing tweeters and a Sound Motion woofer for the low end.

As a single bar for a CX, the Arc Ultra suits a main living room where a clean look matters. It connects through a single HDMI eARC port, with Wi-Fi 6, Bluetooth 5.3 and AirPlay 2 for music, and its Speech Enhancement mode clarifies dialogue. A Sonos Sub and Era 300 rear speakers can be added later, which turns the bar into a larger system over time. The bar is 46.4 inches wide, so it fits TVs of about 55 inches and up. DTS:X is not listed in the decoding formats Sonos publishes for this model, so buyers with a DTS-heavy Blu-ray shelf should weigh that.

Buy it if you want the best single-bar sound in this guide and you may add a subwoofer or rears later. Skip it if you need DTS:X, or if your CX setup needs an HDMI input on the bar, since the Arc Ultra has only its eARC connection and every source must connect to the TV first.

Sony Bravia Theatre Bar 9: a premium bar for games

The Sony Bravia Theatre Bar 9, model HT-A9000, is the premium single-bar pick for a CX owner who plays console games at high refresh rates. Sony lists 13 speaker units in a 7.0.2 configuration, 13 amplifier channels and 585 watts, with Dolby Atmos, DTS:X and IMAX Enhanced support.

For a CX paired with a PlayStation 5 or an Xbox Series X, the Bar 9 has a real advantage: a console can connect through the bar without giving up high refresh rates. Its HDMI 2.1 input and eARC output support 8K and 4K at 120Hz passthrough, with variable refresh rate and auto low latency mode, and its 360 Spatial Sound Mapping creates phantom speakers around the room. No subwoofer or rear speaker is included; the optional subwoofer and rears are sold separately. The bar is 51.2 inches wide, which makes it a natural match for a 65-inch or larger CX.

Buy it if you play console games at 4K and 120Hz and you want one premium bar with both Dolby Atmos and DTS:X. Skip it if your CX is small, if you want a subwoofer in the box, or if you do not need the gaming passthrough, since the LG bars cover the same formats for less.

JBL Bar 1000: detachable rears and deep bass

The JBL Bar 1000 solves the most common complaint about surround systems: rear speakers that stay in place all week and get in the way. Its two detachable surround speakers run on batteries, so they dock on the bar for everyday TV and move behind the sofa for movies.

For a CX owner who wants bass as well as surround, the 10-inch wireless subwoofer is the largest in this guide, and it gives action movies and music a weight that the single bars cannot match without an add-on subwoofer. JBL lists a 7.1.4-channel system with 880 watts of total power, four up-firing drivers and support for Dolby Atmos and DTS:X. The trade-off is battery life: the rears must return to the bar to recharge, and the number of HDMI inputs on the bar was not clearly verified, so plan to connect sources to the CX and use eARC.

Buy it if you want real surround and deep bass but you cannot place permanent rear speakers. Skip it if you want a system that is always ready with no charging to think about, or if your room is small enough that a single bar and a subwoofer would be enough.

Samsung HW-Q800D: the value Atmos package

The Samsung HW-Q800D is the value pick in this guide, and it earns that place by including the two things that matter most at its tier: a dedicated centre channel and a real wireless subwoofer. Samsung lists a 5.1.2-channel system with 11 speakers, 360 watts and an 8-inch wireless subwoofer.

For a CX owner on a mid-tier budget, the HW-Q800D is a practical step up from TV speakers without the cost or the boxes of a premium system. It supports Dolby Atmos, including wireless Dolby Atmos from a compatible Samsung TV, and DTS:X, and it connects through HDMI eARC with one HDMI input. That input passes 4K at 60Hz only, so it does not support 4K at 120Hz passthrough: connect a console directly to one of the CX HDMI 2.1 ports and let eARC carry the audio back. Optional SWA-9500S rear speakers can be added later for true surround.

Buy it if you want a complete bar-and-subwoofer package with both Atmos and DTS:X at the lowest tier in this guide. Skip it if you need 4K at 120Hz passthrough through the bar, or if your CX is small enough that a wide bar will overhang the stand.

Bose Smart Ultra Soundbar: the clearest dialogue in this guide

The Bose Smart Ultra Soundbar is the pick for viewers who keep turning the volume up for dialogue and down for action scenes every night. Bose lists nine speakers with a centre tweeter, Dolby Atmos with TrueSpace, and an AI Dialogue Mode for clearer speech.

For a CX owner whose main complaint is muddy dialogue, a dedicated dialogue mode matters more than channel count, and this is where the Bose bar earns its place. Its ADAPTiQ calibration adjusts the sound to the room, and TrueSpace upmixes stereo and 5.1 content into a wider, taller soundfield. The bar is 41.1 inches wide, and it supports Wi-Fi, Bluetooth 5.0, AirPlay 2, Chromecast and Spotify Connect. No subwoofer or rear speakers are included, so bass and surround come from the bar alone unless the optional Bass Module and Surround Speakers are added later.

Buy it if dialogue clarity is your main complaint and you want a premium single bar without rear speakers. Skip it if you want deep bass for action movies without buying the optional bass module, or if you need DTS:X, which Bose does not list for this model.

What to check before you buy a soundbar for the CX

A soundbar is a room purchase as much as an electronics purchase, so the checks below matter more than the channel count on the box. Measure the TV stand, find the eARC port on the CX, and think about where a subwoofer and any rear speakers will sit.

How to match the best soundbars for lg cx to your room

Room size decides the system before price does, so start with the space rather than the specification sheet. A compact bar suits a bedroom or a small apartment living room, while a large open room needs a wider bar, a real subwoofer and rear speakers behind the sofa.

For a CX in a living room, a 55-inch TV pairs well with a bar around 40 to 46 inches wide, and a 65-inch or larger CX suits the 48-inch and wider bars in this guide. A small room also changes the bass: a large subwoofer in a small bedroom can overwhelm dialogue, so the dialogue modes on the Bose and Sonos bars are worth using.

HDMI eARC, optical and 4K 120Hz passthrough

The connection on the back of the CX decides which sound formats the soundbar can receive, so check it before you buy. The CX has four HDMI 2.1 ports, and eARC sits on HDMI 2, so plug the soundbar there and turn on eARC in the sound settings. HDMI eARC carries the highest-quality audio, including lossless Dolby Atmos from a Blu-ray player.

Optical carries Dolby Digital 5.1 and stereo, but it cannot carry Dolby Atmos at all, so it is only a fallback for a bar without eARC. For gaming, the CX itself handles 4K at 120Hz with variable refresh rate on all four ports, so a console plugged straight into the TV loses nothing. Only the Sony Bar 9 in this guide passes 4K at 120Hz through the bar, while the Samsung HW-Q800D passes 4K at 60Hz only, so route consoles direct to the TV with that model.

Do you need Dolby Atmos, DTS:X or a separate subwoofer?

Dolby Atmos adds height to the sound, DTS:X adds a similar object-based effect from a different format, and a separate subwoofer adds the low end that makes action scenes feel physical. Not every buyer needs all three, so match the formats to what the household actually watches.

A separate subwoofer is the single most noticeable upgrade for movies, music and sports, because a slim bar cannot move enough air for deep bass on its own. The Sonos Arc Ultra is the exception, with a built-in Sound Motion woofer, but even it can add a Sonos Sub later. DTS:X matters mainly for Blu-ray collections; if the household streams only from services that use Dolby Atmos, a Dolby-only bar such as the Sonos or Bose models will not miss anything in daily use.

Frequently asked questions about soundbars for the CX

The questions below cover the doubts that come up most often before a purchase, from which port to use to whether a soundbar is worth it at all. Each answer follows the same rule as the rest of this guide: it states what the specifications support, and it names the case where the answer changes.

Which HDMI port on the LG CX connects to a soundbar?

Use HDMI 2, which is the eARC port on the CX, and turn on eARC in the sound settings with Digital Sound Out set to Auto or Pass Through. All four CX ports are HDMI 2.1, but only HDMI 2 returns audio to a soundbar, so a bar plugged into another port will stay silent.

Will these soundbars work with the 48-inch CX?

Yes, every bar here connects to the 48-inch CX through the same HDMI 2 eARC port, but width matters more than compatibility. A 51-inch bar will overhang a stand built for a 48-inch TV, so the Bose bar at 41.1 inches is the safer fit, and a wider bar needs a wall mount or a wider unit.

Is a soundbar better than the CX built-in speakers?

Yes, in almost every case, because the CX speakers face downward from a thin cabinet and have little room for bass or a centre channel. A soundbar adds forward-facing drivers, a dedicated centre channel for dialogue and, in most picks here, a separate subwoofer for low end.

Conclusion

Start with the LG S90TY for most CX owners, or the LG S95TR for a complete surround system in one box. If a single premium bar matters more, the Sonos Arc Ultra leads, and the Sony Bravia Theatre Bar 9 is the pick for 4K 120Hz gaming. Plug the bar into HDMI 2, turn on eARC, and choose the system you will enjoy every day.