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LG S70TY Soundbar

LG S70TY Soundbar

By LG · Soundbars · Desk & Streaming Setup · More from LG

  • 3.1.1 channels with up-firing center channel
  • Dolby Atmos and DTS:X support
  • 7 speakers
  • Soundbar 37.4 x 2.5 x 4.5 in, 6.6 lbs
  • HDMI eARC, optical, USB, Bluetooth

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Problems, parts and running costs

Summary

LG S70TY is a 3.1.1-channel Dolby Atmos soundbar with a wireless subwoofer, HDMI eARC and 4K/120 Hz passthrough for consoles. PCMag and What Hi-Fi rate it highly for immersion and bass at the price, but dialogue clarity and the DTS:X claim are inconsistent across LG’s pages — best value around $240–300, not worth full MSRP.

Strengths

  • Powerful wireless subwoofer with booming bass (PCMag, What Hi-Fi) [7][8]
  • Well-balanced sound with good music reproduction (PCMag, What Hi-Fi) [7][8]
  • Height channel adds verticality and immersion (PCMag, What Hi-Fi) [7][8]
  • 4K/120 Hz VRR/ALLM passthrough for consoles (LG, PCMag) [1][4][7]
  • HDMI eARC for lossless audio passthrough (LG, owner’s manual) [1][4]
  • LG TV integration via WOW Orchestra, TV Sound Mode Share and SIMPLINK (LG) [1]

Weaknesses

  • Single height channel limits spatial-imaging precision (PCMag, What Hi-Fi) [7][8]
  • Dialogue can be flat in some modes, and Cinema mode hurts its clarity (What Hi-Fi) [8]
  • No Wi-Fi means no AirPlay 2, Google Cast, Spotify Connect or Tidal Connect (PCMag, What Hi-Fi) [7][8]
  • No on-screen display; setup relies on LEDs, voice prompts and app (LG, PCMag, What Hi-Fi) [1][7][8]
  • Subwoofer finish looks cheap and untidy (PCMag, What Hi-Fi) [7][8]
  • Not user-serviceable and expansion costs extra: no user-replaceable parts, and rear speakers (SPT8-S) are sold separately (LG support, PCMag) [1][6][7]

Verified specifications

Type3.1.1-channel soundbar system (soundbar + wireless active subwoofer) [1][4]
BrandLG
ModelS70TY (also marketed as US70TY in the UK) [1][8]
Channels3.1.1 (left, center, right + one height/up-firing channel + subwoofer) [1][4]
Claimed total output power400 W [1][2]
Audio formatsDolby Atmos, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS Digital Surround, LPCM, MP3, WAV [1][4]
High-resolution audioup to 24-bit/96 kHz [1]
ConnectionsHDMI IN (1), HDMI to TV (eARC/ARC), Optical IN (1), USB host, Bluetooth [1][4]
4K passthrough4K/120 Hz VRR/ALLM over HDMI 2.3 HDCP 2.3 (YCbCr 4:2:0) [1][4]
GamingEnhanced VRR/ALLM, up to 120 Hz [1]
Wireless active subwooferYes [1]
Sound modesStandard, Cinema, Clear Voice, Music, Game, Sports, Bass Blast, Bass Blast+, AI Sound Pro [1]
LG-TV featuresWOW Orchestra, WOW Interface, TV Sound Mode Share, SIMPLINK (HDMI-CEC) [1]
Smartphone appLG ThinQ (iOS/Android) with firmware OTA [1][7]
DisplayLED indicator only, no on-screen display [1][7][8]
Dimensions (soundbar)37.4 x 2.5 x 4.5 in (950.0 x 63.0 x 115.0 mm, including base) [1][4]
Weight (soundbar)6.6 lbs (LG US); 3 kg (What Hi-Fi) [1][8]
Dimensions (subwoofer)7.9 x 14.8 x 11.2 in (200.0 x 377.0 x 285.0 mm) [1][4]
Weight (subwoofer)12.7 lbs (LG US); 5.7 kg (What Hi-Fi) [1][8]
Subwoofer type1-way, 1 speaker, 3 ohm impedance [4]
Country of originChina [1]
Warranty1 Year Parts & Labor [1]
Included accessoriesHDMI cable, remote control, batteries, wall-mount bracket, warranty card [1]
Full research notes and sources

Audio performance and modes

What Hi-Fi (2025-02-14) scored Sound 4, Build 4 and Features 4, liking the large, well-integrated sound and punchy but not deepest bass on Spider-Man: Into the Spider-Verse, while noting a good sense of height on Doctor Strange in the Multiverse of Madness [8].

Both reviewers flagged dialogue as the weak spot. The subwoofer was a standout: PCMag described booming bass with no distortion on The Knife’s “Silent Shout” at 80% volume, and What Hi-Fi called it punchy and well-controlled [7][8].

The sound modes cover most scenarios: Standard, Cinema, Clear Voice, Music, Game, Sports, Bass Blast, Bass Blast+ and AI Sound Pro. Clear Voice Pro is designed to boost dialogue, but What Hi-Fi reported it still can’t fully compensate for Cinema mode’s tendency to flatten vocals [8].

No RTINGS or instrumented frequency-response measurements exist for the S70TY, so there is no published data on max SPL, latency or bass extension [7][8].

Connections, gaming and smart features

The S70TY connects via HDMI IN (1), HDMI to TV with eARC/ARC, optical, USB host and Bluetooth. LG’s US page lists “4K Passthrough” as No, but “4K Passthrough (HDCP 2.3)” as Yes, and the manual confirms 4K/120 Hz at YCbCr 4:2:0 with Dolby Vision and HDR10 passthrough [1][4]. Gaming features include Enhanced VRR/ALLM up to 120 Hz, which makes it suitable for PS5 and Xbox Series X|S [1].

Bluetooth pairing is straightforward: the bar shows up as “LG S70TY(XX)” on a phone [5]. The LG ThinQ app controls the bar, runs firmware updates over the air and handles setup, but there is no Wi-Fi, AirPlay 2, Google Cast, Spotify Connect or Tidal Connect [1][7][8]. Setup is done through LED indicators, voice prompts and the app rather than an on-screen display, which PCMag found an odd control given the lack of a screen [7][8].

The subwoofer pairs via a button press and shows a green LED when connected [5][6]. Optional rear speakers (SPT8-S) expand the system from 3.1.1 to 5.1.1, but they are sold separately; PCMag lists them at $199.99 [1][4][7].

Build quality, size and warranty

The soundbar has a metal speaker grille over matte black plastic, with a metal front grille and plastic top/sides per PCMag; the subwoofer’s rear finish is described as a bit untidy and cheap-looking [7][8]. Dimensions are 37.4 x 2.5 x 4.5 in (950.0 x 63.0 x 115.0 mm) including the base, and the bar weighs 6.6 lbs (LG US) or 3 kg (What Hi-Fi) [1][8]. The subwoofer measures 7.9 x 14.8 x 11.2 in (200.0 x 377.0 x 285.0 mm) and weighs 12.7 lbs (LG US) or 5.7 kg (What Hi-Fi) [1][8].

LG’s troubleshooting section documents common owner issues like no sound, subwoofer LED blinking green/red, low volume needing DRC set to Off and remote range of about 7 m [6]. These are symptoms owners report to LG, not defect rates. The system is not user-serviceable: no user-replaceable parts list was found, and maintenance is limited to firmware updates via the app and generic troubleshooting steps [1][6].

Warranty is one year parts and labor [1]. No extended coverage terms were found beyond that.

Is it worth it?

Judged from the sources, not live checkout prices:

  • Around $240–270: strong value. At this level it is one of the few Atmos height-channel soundbars with a real subwoofer, HDMI eARC and 4K/120 gaming passthrough, and it carries PCMag’s Editors’ Choice [7][8].
  • Around $300 (LG list / typical Best Buy): fair. Reasonable if you value LG TV integration (WOW Orchestra, TV Sound Mode Share) and a compact bar with a sub. The Sonos Beam Gen 2 ($499) is the class benchmark it does not fully beat on dialogue [7][8].
  • Much above $300–350: weak. At full MSRP or UK launch price, the lack of Wi-Fi, no on-screen display and the dialogue/DTS:X caveats weigh more heavily [7][8].

The clearest reason to pay more is better dialogue/vocal clarity and true surround from rear speakers [7][8].

Which model this is

ASIN B0CX45CR94 (LG S70TY 3.1.1 Channel Soundbar with Dolby Atmos)

Sources

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