Soundbars / Compare

LG S70TY vs Polk Audio Signa S4

A

Product A: LG

S70TY

64 of 98 known

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B

Product B: Polk Audio

Signa S4

50 of 98 known

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Every value links to where we found it.

Only differences

ALG S70TY

BPolk Audio Signa S4

Audio system

8 of 17 differ

System channel configurationiMaker-stated channel layout of the exact package, such as 5.1.2. This can include virtual channels. It is not a count of physical drivers. Optional speakers do not count.

3.1.11Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

3.1.22Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet: Dolby Atmos 3.1.2 sound bar with wireless subwoofer.

Physical drivers in the packageiCount of physical active speaker drivers across the supplied bar, subwoofer and rear speakers. Passive radiators, microphones and virtual channels do not count. A coaxial driver, such as KEF Uni-Q, counts once, as makers count it.

71Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026General: Number of Speaker Units 7. This is the 6 bar drivers plus the subwoofer driver.

82Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Seven drivers in the bar plus one woofer in the subwoofer, from the infosheet driver list. The Denon page copy says eleven drivers. That copy does not match the maker driver list and is not used.

Physical drivers in the bariCount of physical active speaker drivers in the soundbar alone. Passive radiators and virtual channels do not count. A coaxial driver, such as KEF Uni-Q, counts once, as makers count it.

62Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Amplifier table: front 30 W x 4, center 30 W and top center (overhead) 30 W, which is six channels in the bar. This matches the What Hi-Fi? count of six drive units. Driver diameters are not published.5Reviewwhathifi.com/tv-home-cinema/lg-s70tyRead 15 October 2026Review: the soundbar features six drive units.

72Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Up-firing drivers in the packageiPhysical active drivers explicitly firing upwards across the supplied package. Virtual height channels and passive radiators do not count. A driver that fires upwards only when the bar is wall mounted is not counted.

12Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Amplifier table lists a top center (overhead) channel. The manual notes speakers on the top of the product.5Reviewwhathifi.com/tv-home-cinema/lg-s70tyRead 15 October 2026Review: the central high-frequency unit faces upwards.

22Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Driver layoutiPublished physical driver layout for the supplied components. A row names one driver type in one component. Do not translate channel count into driver count.

ALG S70TY

Component	Driver type	Count	Orientation
Soundbar	Tweeter (left and right)	2	Not available
Soundbar	Mid/bass (left, center and right)	3	Not available
Soundbar	Center tweeter	1	Up-firing
Subwoofer	Woofer	1	Not available

Source2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026The manual lists the amplifier channels, not the drivers. The layout of two front tweeters, three mid/bass units and one up-firing center tweeter comes from the What Hi-Fi? review. The subwoofer is one 1-way speaker. No driver diameters are published.5Reviewwhathifi.com/tv-home-cinema/lg-s70tyRead 15 October 2026Review: left, centre and right channels each pack a tweeter and a mid/bass unit, with the central high-frequency unit facing upwards. Firing directions of the other drivers are not stated.

BPolk Audio Signa S4

Component	Driver type	Count	Diameter (mm)	Orientation
Soundbar	Tweeter (left and right)	2	25	Front-firing
Soundbar	Racetrack midrange (left and right), 120 × 40 mm	2	Not available	Front-firing
Soundbar	Full-range center	1	25	Not available
Soundbar	Elevation (left and right)	2	66	Up-firing
Subwoofer	Woofer	1	150	Down-firing

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet lists two 1 in tweeters, two 4.7 x 1.6 in racetrack mids, one 1 in full-range center and two 2.6 in elevation drivers in the bar, and one 5.9 in woofer in the subwoofer. Metric sizes as published. Elevation and subwoofer firing directions come from the Trusted Reviews review.

Separate subwoofer includediA separate powered subwoofer is supplied with the reference package. A built-in woofer does not count.

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Included subwoofer connectioniAudio link used by the supplied separate subwoofer. Wireless subwoofers can still require an AC power cable.

Wireless1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Wireless Active Subwoofer: Yes. The subwoofer has its own AC power cord.

Wireless2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Included subwoofer driver diameteriPublished diameter of an active driver in the supplied separate subwoofer. Do not use enclosure size or passive radiator size.

Not available

150mm2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet: woofer 5.9 in / 15 cm. Some retailer copy says 5.25 in. The maker figure is stored.

Rear speakers includediCount of separate rear speaker enclosures supplied with the reference package. Detachable bar ends count when usable as rears. Optional rear speakers do not count.

02Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Rear speakers SPT8-S are sold separately. The box contents in the spec sheet list none.

02Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026What is in the Box lists a sound bar and a subwoofer only. The Trusted Reviews review says rear speakers cannot be added.

Included rear speaker connectioniAudio link to the supplied rear speaker enclosures. Their power connection is separate.

Not available

Not available

Detachable rear speakersiThe bar has supplied detachable end sections usable as separate rear speakers.

Not available

Not available

Compatible optional subwoofersiMaker-named compatible additional subwoofer models. These do not contribute to the reference package layout, dimensions or measurements.

Not available

Not available

Compatible optional rear speakersiMaker-named compatible additional rear speaker models. These do not contribute to the reference package layout, dimensions or measurements.

SPT8-S2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Rear Speakers (SPT8-S, Sold Separately). With them the bar supports 5.1.1 channels.

Not available

Total RMS audio output poweriMaker-stated RMS or rated continuous amplifier output for the exact supplied package. Peak or unspecified maximum claims do not qualify. Distortion, load and rating conditions belong in the source note. Power consumption is separate.

400W2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Specifications: amplifier total 400 W RMS. Front 4 x 30 W, center 30 W, top center 30 W (6 ohm, THD 10 percent) plus subwoofer 220 W (3 ohm, THD 10 percent).

Not available

Total peak audio output poweriMaker-stated peak or maximum amplifier output for the exact supplied package. This is separate from RMS or continuous output and from electrical consumption. Rating conditions belong in the source note.

Not available

Not available

Published frequency response lower limitiMaker-published lower limit for the exact supplied package. Tolerance and test conditions belong in the source note. Reviewer extension measurements are separate.

Not available

Not available

Published frequency response upper limitiMaker-published upper limit for the exact supplied package. Tolerance and test conditions belong in the source note.

Not available

Not available

Audio formats

8 of 9 differ

Dolby AtmosiExplicit support for Dolby Atmos playback. Transport codec and connection restrictions belong in source notes.

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

DTS:XiExplicit support for DTS:X playback. Virtual surround processing alone does not establish DTS:X decoding.

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

No4Reviewtrustedreviews.com/reviews/polk-signa-s4Read 13 October 2026Review states the sound bar decodes PCM and Dolby formats and has no support for any DTS format. The maker manual lists no DTS format.

Supported audio formatsiAudio formats explicitly decoded by the device. Codec and connection restrictions belong in source notes. Bluetooth codecs and music-file formats are separate.

Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS Digital Surround, DTS-HD High Resolution Audio, DTS-HD Master Audio, DTS:X1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Audio Format list: LPCM, Dolby Atmos, Dolby TrueHD, Dolby Digital Plus, Dolby Digital, DTS Digital Surround, DTS-HD Master Audio, DTS-HD High Resolution and DTS:X.

Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD and Dolby Atmos. No DTS format is listed.

Audio formats by connectioniExplicitly supported audio decoding combinations. Max input channels counts decoded input audio channels, including LFE. A 5.1 layout has 6 channels and 7.1 has 8. Output speaker layouts and Atmos objects do not count. Atmos over Dolby Digital Plus and over Dolby TrueHD are separate rows. Format support on one input does not prove support on another.

ALG S70TY

Connection	Format
HDMI eARC	Dolby TrueHD
HDMI eARC	Dolby Atmos
HDMI eARC	DTS-HD Master Audio
HDMI eARC	DTS:X
HDMI input	Dolby Atmos
HDMI input	DTS:X

Source1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026The sheet gives no per-connection table. Rows come from the manual: eARC carries the high-quality formats, and an external device on HDMI IN can send Atmos or DTS:X. No maximum channel counts are published.

BPolk Audio Signa S4

Connection	Format
HDMI eARC	Dolby Atmos

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Maker states Dolby Atmos needs the HDMI eARC connection between sound bar and TV. No other connection-specific format limits are published.

Music file formatsiPublished local or network music-file playback formats. Playback route and app restrictions belong in source notes.

MP3, WMA, AAC, FLAC, WAV1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026USB playback: FLAC, WAV, MP3, WMA and AAC.

Not available

Max wired audio sample rateiHighest explicitly published supported sample rate for decoded wired audio input. Name the exact HDMI, ARC, eARC or optical connection and codec in source notes. This is the published route limit, not proof of a device-wide maximum across all inputs. Local or network music-file limits and Bluetooth do not qualify. A chipset limit is not device evidence.

192kHz2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Specifications: available digital input audio sampling frequency 32 to 192 kHz. The line names no connection or codec. The spec sheet markets High Resolution Audio up to 24bit/96kHz, so the sources differ. The manual figure is stored.

48kHz3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page lists sampling frequency 32, 44.1 and 48 kHz for the sound bar. It does not name the connection or codec.

Max music file sample rateiHighest explicitly published supported local or network music-file sample rate. Name the playback route and file format in source notes. This is the published route and format limit, not proof of a device-wide maximum across all music formats. Wired HDMI or optical input and Bluetooth are separate.

192kHz2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Playable file specifications: FLAC and WAV (16 bit or 24 bit) from 32 kHz up to 192 kHz over USB.

Not available

Max wired audio bit depthiHighest explicitly published supported bit depth for decoded wired audio input. Name the exact HDMI, ARC, eARC or optical connection and codec in source notes. This is the published route limit, not proof of a device-wide maximum across all inputs. Local or network music-file limits and Bluetooth do not qualify.

24bits1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Sheet line High Resolution Audio up to 24bit/96kHz. The line does not name an input or a codec, so this is the route-independent maker figure.

Not available

Max music file bit depthiHighest explicitly published supported local or network music-file bit depth. Name the playback route and file format in source notes. This is the published route and format limit, not proof of a device-wide maximum across all music formats. Wired HDMI or optical input and Bluetooth are separate.

24bits1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026High Resolution Audio: up to 24bit/96kHz. The manual states FLAC and WAV at 16 bit or 24 bit over USB.

Not available

Connectivity

10 of 17 differ

Ports on the bariPhysical connectors on the soundbar alone. Record input, output, ARC or eARC, service, subwoofer and power roles explicitly. Count identical connectors per row. Component connectors are described in source notes.

ALG S70TY

Connector	Count	Role
HDMI	1	HDMI IN for an external source, with video passthrough to the TV
HDMI	1	HDMI OUT to the TV, eARC and ARC
Optical	1	Optical digital audio input
USB-A	1	Music playback from a USB storage device, 5 V 500 mA
AC power	1	Soundbar power input

Source1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Connectivity: HDMI In / Out 1 / 1, optical input, USB host. USB host, charge: Yes, No. The manual rear panel shows AC IN, HDMI IN, HDMI TV (eARC/ARC), USB and OPTICAL IN only.

BPolk Audio Signa S4

Connector	Count	Version	Role
HDMI	1	2.1	TV connection with eARC or ARC
Optical	1	Not available	Digital audio input
3.5 mm audio	1	Not available	Analog AUX audio input
USB-A	1	Not available	Firmware updates
AC power	1	Not available	Soundbar power input

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet inputs: one HDMI eARC output, one optical input, one 3.5 mm analog input, Bluetooth and one USB-A for firmware updates. The manual also describes a hidden USB music input. HDMI 2.1 comes from the launch announcement text on Home Theater Forum and the Greentoe retailer table, not from the maker documents.

HDMI ARC

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

HDMI eARC

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

HDMI-CEC

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026HDMI support: CEC (Simplink) Yes.

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

HDMI video passthroughiCan pass video from a dedicated HDMI source input to a television output. ARC or eARC alone does not qualify.

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

No3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026The only HDMI connector is the TV eARC/ARC connection. There is no HDMI source input.

Video passthrough modesiPublished supported passthrough combinations, not inferred maxima at untested resolutions. State chroma, bit depth, HDR and firmware restrictions in source notes.

ALG S70TY

Width (px)	Height (px)	Refresh rate (Hz)
3840	2160	120

Source2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026HDMI IN to TV passthrough: 4K for 4K sources with HDCP 2.3, 4K@120 Hz (YCbCr 4:2:0). 4K is stored as 3840 x 2160.

BPolk Audio Signa S4

Not available

HDR passthrough formats

Dolby Vision, HDR101Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026HDR10 / HDR10+: Yes / No. Dolby Vision: Yes.

Not available

VRR passthrough

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026HDMI support: VRR / ALLM Yes. One line covers both features.

Not available

ALLM passthrough

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026HDMI support: VRR / ALLM Yes. One line covers both features.

Not available

HDCP versioniHighest HDCP version the maker states for an HDMI port of the soundbar, such as 2.3. When the source inputs and the TV output differ, the source input version is stored. A bar with no HDMI input stores the version of its TV output, also when that output carries video from a built-in streaming player.

2.31Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Product info: 4K Passthrough (HDCP 2.3).

Not available

Bluetooth audio inputiCan receive audio from a Bluetooth source. A Bluetooth remote alone does not qualify.

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Bluetooth versioniPublished version of the soundbar audio connection. An optional remote or detachable rear can use a different version.

5.11Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

5.03Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: Bluetooth Version 5.0, Power Class 2, A2DP 1.3 and AVRCP 1.6.

Bluetooth audio codecsiExplicitly supported codecs for received Bluetooth audio. A Bluetooth version alone does not establish a codec.

SBC, AAC1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Bluetooth Codec SBC / AAC: Yes / Yes.

SBC3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: corresponding codec SBC.

Wi-Fi

No5Reviewwhathifi.com/tv-home-cinema/lg-s70tyRead 15 October 2026Review: no network connection, so Spotify Connect, Tidal Connect and AirPlay 2 are not supported. Review spec box lists streaming as No. Abt lists Wi-Fi No. A December 2023 pre-launch French article titled the model with Wi-Fi, which the final specifications do not show.6Retailer pageabt.com/LG-Soundbar-3.1.1-Channel-with-Dolby-Atmos-and-Subwoofer-S70TY/p/207280.htmlRead 15 October 2026Specifications: Wi-Fi No, AirPlay No. Same page lists the spec sheet and owner's manual PDFs used above.

Not available

Wi-Fi standardiPublished Wi-Fi standards for the soundbar, written as 802.11 names without IEEE, such as "802.11a/b/g/n/ac/ax". A Wi-Fi generation is written as its standard, so Wi-Fi 5 is "802.11ac" and Wi-Fi 6 is "802.11ax". Do not infer the standard from frequency bands.

Not available

Not available

Wi-Fi bandsiPublished radio bands, such as 2.4 GHz and 5 GHz.

Not available

Not available

Built-in Ethernet speediRated speed of the built-in port. An optional adapter does not count.

Not available

Not available

Streaming and control

2 of 8 differ

Streaming protocolsiNamed network playback protocols, such as AirPlay 2, Google Cast, Spotify Connect and Tidal Connect. Bluetooth is separate.

Not available

Not available

Voice assistantsiNamed assistants supported by the soundbar. Built-in and external-device routes and market restrictions belong in source notes.

Not available

Not available

Built-in microphoneiPhysical microphone in the bar for voice or calibration. An external setup phone or remote microphone does not count.

Not available

Not available

Microphone mute controliA physical control on the soundbar explicitly disables its built-in voice microphone. State whether this is an electrical switch or software-controlled button when known.

Not available

Not available

Companion apps

LG Soundbar2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026The soundbar is controlled with the LG Soundbar app (Android 6.0 or higher, iOS 12 or higher). LG US page copy and What Hi-Fi? call the app LG ThinQ.

Not available

Companion app platforms

iOS, Android1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Smartphone Remote App (iOS/Android).

Not available

Multiroom audioiCan play synchronised audio with other rooms through a supported network platform. Optional surround expansion alone does not qualify.

Not available

Not available

Remote includediA separate remote control supplied with the reference package. Phone apps and TV remotes do not count.

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Sound processing

3 of 7 differ

Sound modes

AI Sound Pro, Standard, Music, Cinema, Clear Voice Pro, Sports, Game, Bass Blast1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Sound modes: AI Sound Pro, Standard, Music, Cinema, Clear Voice Pro, Bass Blast, Bass Blast +, Sports, Game. Bass Blast and Bass Blast + are stored as one mode.

Movie, Music, Night2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Automatic room calibrationiExplicit acoustic measurement or analysis used to adapt playback to the room. Manual EQ alone does not qualify. Setup phone requirements belong in source notes.

Not available

Not available

Room calibration system

Not available

Not available

Dialogue enhancementiA dialogue or voice mode counts, also when the maker lists it as an EQ preset.

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Clear Voice Pro sound mode.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Night mode

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Night Mode: Yes. The manual calls it Night Time.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Equalizer controlsiPublished user-adjustable EQ controls. Bass and treble controls are distinct from multi-band EQ.

Bass, Mid, Treble1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Customize EQ Remote / App: Yes. The manual lists Bass, Mid and Treble tuning, each from -6 to 6.

Bass Adjust2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

TV speaker integrationiNamed features allowing compatible television speakers to play with the bar. TV models and connection requirements belong in source notes.

WOW Orchestra1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026WOW Orchestra: Yes. The manual says it works with some LG TVs over an HDMI eARC connection and plays sound from both the TV and the soundbar.

Not available

Power

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Published operating poweriMaker-published operating electrical consumption of the soundbar alone. Included subwoofer and rear-speaker consumption do not count. Keep workload and method in source notes. Audio amplifier output is separate.

33W1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Soundbar power consumption 33 W. The subwoofer is listed separately at 33 W.

40W3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar specifications: power consumption 40 W. The subwoofer is listed separately at 40 W.

Published standby poweriMaker-published non-networked standby consumption of the bar alone. Networked standby and other components are separate.

0.5W1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Soundbar standby 0.5 W with a down arrow, meaning at most 0.5 W. The subwoofer is listed separately at 0.5 W.

1.5W3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar standby mode 1.5 W. Deep standby mode 0.3 W. The sound bar has no network standby.

Published networked standby poweriMaker-published networked standby consumption of the bar alone. Enabled radio and network conditions belong in source notes.

Not available

Not available

Power supplyiPublished AC input range or external DC adapter arrangement. Electrical input ratings are not operating consumption.

Not available

Sound bar: AC 100 to 240 V, 50/60 Hz. The wireless subwoofer has its own power cord, AC 100 to 240 V, 50/60 Hz.3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

Detachable rear battery lifeiMaker-stated runtime of the supplied detachable rear speakers. Volume, mode and recharge conditions belong in source notes.

Not available

Not available

Detachable rear charge timeiMaker-stated full recharge time of supplied detachable rear speakers. Charging route belongs in source notes.

Not available

Not available

Measured

None of 8 known

Low-frequency extension (measured)iReviewer-measured lower extension for the exact tested package. Test threshold, mode, room correction and configuration belong in source notes.

Not available

Not available

High-frequency extension (measured)iReviewer-measured upper extension for the exact tested package. Test threshold and configuration belong in source notes.

Not available

Not available

Max sound pressure (measured)iReviewer-measured maximum sound pressure. Signal, distance, sound mode and supplied or optional speaker configuration belong in source notes.

Not available

Not available

Frequency response deviation (measured)iReviewer-measured standard error against the stated target. Target, averaging range, preset and test method belong in source notes.

Not available

Not available

Measured latencyiReviewer-measured audio latency. Keep source/TV, firmware, codec, synchronisation correction and exact tested speaker configuration in source notes. Negative offsets are valid when the method reports them.

Not available

Not available

Operating power (measured)iReviewer-measured operating consumption of the soundbar alone. Optional or supplied external speakers do not count. Workload and enabled radio conditions belong in source notes.

Not available

Not available

Standby power (measured)iReviewer-measured bar-only standby consumption. Network state and test conditions belong in source notes.

Not available

Not available

Soundbar weight (measured)iReviewer-measured bar-only weight. Excludes subwoofer, rears, mounting hardware and cables.

Not available

Not available

Dimensions and weight

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Soundbar dimensionsiBar alone in its normal tabletop orientation, without detachable rears, wall brackets or external cables. A source that includes detachable ends must use component_dimensions instead. A size labelled L x W x H, as on Amazon, is width x depth x height.

Width950Height63Depth115mm(37.4 × 2.5 × 4.5 in)2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Approx. 950.0 x 63.0 x 115.0 mm (W x H x D) including the base.

Width1,046Height60Depth95mm(41.2 × 2.4 × 3.7 in)2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet gives sound bar W x D x H as 1046 x 95 x 60 mm.

Soundbar weightiBar alone, without detachable rears, subwoofer, wall brackets or external cables. Source-published masses including detachable ends belong in component_dimensions.

3,000g(6.6 lb)4Maker product pagelg.com/sg/speakers/soundbars/s70tyRead 15 October 2026Singapore specification list: main unit 3.0 kg. The US sheet gives 6.6 lbs. What Hi-Fi? also gives 3 kg. The metric figure is stored.

2,900g(6.4 lb)3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar weight 6 lbs 6 oz (2.9 kg). Subwoofer weight 9 lbs 1 oz (4.1 kg).

Component dimensions and weightiPublished dimensions and mass for named supplied components, including a bar with detachable rears attached when stated. Each row describes one enclosure, not the pair, unless the component label explicitly states a set. Width, height and depth use normal installed orientation.

ALG S70TY

Component	Width (mm)	Height (mm)	Depth (mm)	Weight (g)
Subwoofer	200	377	285	5,700

Source2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Wireless subwoofer approx. 200.0 x 377.0 x 285.0 mm (W x H x D) including the base. Weight comes from the LG Singapore page.4Maker product pagelg.com/sg/speakers/soundbars/s70tyRead 15 October 2026Singapore specification list: subwoofer weight 5.7 kg and 200 x 377 x 285 mm. The US sheet gives 12.7 lbs. What Hi-Fi? also gives 5.7 kg.

BPolk Audio Signa S4

Component	Width (mm)	Height (mm)	Depth (mm)	Weight (g)
Subwoofer	200	280	328	4,100

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet gives subwoofer W x D x H as 200 x 328 x 280 mm. Weight comes from the manual.

Package dimensions

Width1,013.5Height454.7Depth259.1mm(39.9 × 17.9 × 10.2 in)1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Carton size (WxHxD) 39.9 x 17.9 x 10.2 in. Converted exactly and rounded to 0.1 mm. Abt lists the same box as 18 x 10 x 39 in (H x W x L).

Width1,117.6Height263.7Depth441.5mm(44 × 10.4 × 17.4 in)7Retailer pagegreentoe.com/product/Polk_Audio_Signa_S4_3-1-2-Channel_Dolby_Atmos_Soundbar_System_300443-01-00-101Read 13 October 2026Retailer table lists box dimensions (LxWxH) as 44 x 17.38 x 10.38 in. Mapped to width, depth and height in that order. Inches converted exactly to mm and rounded to 0.1 mm.

Package weightiShipping package including supplied components and packaging.

12,746g(28.1 lb)1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Shipping weight 28.1 lbs. Converted exactly and rounded to 1 g. LG Singapore gives a gross weight of 13.3 kg for its market.

9,584g(21.1 lb)7Retailer pagegreentoe.com/product/Polk_Audio_Signa_S4_3-1-2-Channel_Dolby_Atmos_Soundbar_System_300443-01-00-101Read 13 October 2026Retailer table lists package weight 21.13 lb. NFM lists 21.20 lb. Converted exactly and rounded to 1 g.

Wall mountable

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Included accessories list a wall mount bracket.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026Page copy describes a low-profile, wall-mountable design. Wall mount template and spacers are supplied. Screws are not listed.3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Section Hanging the sound bar on a wall describes two keyholes and the supplied template and spacers.

In the box

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In the box

Soundbar, Wireless subwoofer, Remote control, 2 AA batteries, Wall mount bracket, Wall bracket installation guide, Warranty card1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Included accessories: remote control, 2 AA batteries, wall mount bracket and warranty card. The manual adds the wall bracket installation guide. The soundbar and subwoofer are the product itself.

Sound bar, Subwoofer, Remote control, Sound bar power cord, Subwoofer power cord, HDMI cable, Optical cable, 2 AAA batteries, Quick start guide, Registration card, Safety card, Wall mount template, Wall mount spacers1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026Specifications tab What's in the Box. The infosheet lists one power cord. The page lists sound bar and subwoofer power cords.

Wall mount hardware includediSupplied bar mounting brackets or mount. Screws alone do not establish that a complete mount is included.

Yes1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Sheet lists a wall mount bracket. The manual says screws and wall plugs for the wall are not supplied.

Not available

HDMI cable included

No1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026The US accessory list has no HDMI cable. LG Singapore lists an HDMI cable for its market.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Optical cable included

No1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026The US accessory list has no optical cable.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

General

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Series

Not available

Signa1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

S70TY2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Cover lists model S70TY (S70TY, SPT5-W). SPT5-W is the subwoofer. The German DS70TY and the UK US70TY are stored as aliases.

300443-01-00-1011Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026US page SKU 300443-01-00-101.

GTIN / EAN

1951740713661Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026UPC 195174071366 on the sheet.

7471921358298Retailer pagecreativeaudio.net/signa-s4Read 13 October 2026UPC 747192135829 listed with part number 300443-01-00-101. Electronic Express lists the same UPC.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

December 20238Press articlet3.com/news/the-best-lg-soundbars-suddenly-sound-more-appealing-as-2024-range-revealedRead 15 October 2026Article of 2023-12-19 reports that LG revealed the 2024 soundbar range including the S70TY, for LG QNED TVs. No price or availability was given.

Not available

Status

Available3Maker product pagelg.com/us/soundbars/lg-s70ty-soundbarRead 15 October 2026The LG USA page offers the soundbar for sale at 299.99 USD. The page could be read only through a text summary. The current price is not a launch price.

Available1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026US maker page offers the black model for purchase. The current page price is $449, which is not the launch price.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

$3995Press articlehometheaterforum.com/polk-audio-introduces-signa-s4-dolby-atmos-sound-bar-systemRead 13 October 2026Launch article of 2021-12-20 gives the system price as $399 and says it is available now from Polk Audio. The Tom's Guide review also gives $399. US MSRP excluding sales tax is not stated.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€4999Press articleareadvd.de/news/lg-stellt-neue-soundbars-fuer-2024-vorRead 15 October 2026German launch report of 2024-03-13 lists the DS70TY (the German model code of the S70TY, 400 W) from August 2024 at 499 euros. VAT treatment is not stated and a German list price normally includes VAT. No US launch price was found. The 399.99 USD shown on LG USA and Abt is a comparison price, not a launch price.

€3496Press articleareadvd.de/news/polk-audio-stellt-neues-dolby-atmos-soundbar-system-vorRead 13 October 2026German launch report of 2021-12-16: available now for 349 euros recommended retail price (UVP) from PolkAudio.com and dealers. VAT treatment is not stated and a German UVP normally includes VAT.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US, AU, SG, GB, DE9Press articleareadvd.de/news/lg-stellt-neue-soundbars-fuer-2024-vorRead 15 October 2026US from the LG USA page, Abt and the US spec sheet. Australia from the channelnews launch article. Singapore from the LG Singapore page. UK from What Hi-Fi? (sold as US70TY). Germany from this report (sold as DS70TY).

US, EU1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026US page lists the US SKU and US pricing. The EU market comes from the German launch report.6Press articleareadvd.de/news/polk-audio-stellt-neues-dolby-atmos-soundbar-system-vorRead 13 October 2026

ColoursiThe maker's own colour names

Black3Maker product pagelg.com/us/soundbars/lg-s70ty-soundbarRead 15 October 2026Page lists Black.

Black1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Links

Not compared

Product page

www.lg.com/us/soundbars/lg-s70ty-soundbar3Maker product pagelg.com/us/soundbars/lg-s70ty-soundbarRead 15 October 2026

www.polkaudio.com/en-us/product/sound-bars/signa-s4/300443.html1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Spec sheet

content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdf1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026LG USA one-page specification sheet dated 07/25/24, hosted by Abt. The LG USA support page could not be read.

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdf2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Manual

content.abt.com/documents/162235/lg-soundbar-S70TY-om.pdf2Owner's manualcontent.abt.com/documents/162235/lg-soundbar-S70TY-om.pdfRead 15 October 2026Owner's manual 2312_Rev01, hosted by Abt. Model S70TY (S70TY, SPT5-W).

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdf3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year1Maker spec sheet (PDF)content.abt.com/documents/165917/lg-soundbar-S70TY-spec-sheet.pdfRead 15 October 2026Limited warranty 1 year parts and labor, US.

Not available

Both are also in the API. Back to all soundbars.