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  1. Home
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LG SC9S vs S77S

Which Soundbar Is Better?

    Top
    Main Differences
    Design
      Style - BarStyle - SubwooferStyle - SatellitesDimensions - BarDimensions - SubwooferDimensions - SatellitesMountingBuild QualityIn The Box
    Sound
      Stereo Frequency ResponseStereo Frequency Response With Preliminary CalibrationStereo SoundstageStereo DynamicsStereo Total Harmonic DistortionCenterSurround 5.1Height (Atmos)Sound Enhancement Features
    Connectivity
      Inputs/Outputs - BarAudio Format Support: ARC/eARCAudio Format Support: HDMI InAudio Format Support: OpticalAudio Latency: ARCAudio Latency: HDMI InAudio Latency: OpticalVideo Passthrough To TVWireless Playback
    Additional Features
      InterfaceBar ControlsRemoteVoice Assistants Support
    Comments

Products

LG SC9S
LG S77S

Tested using Methodology v1.3

Updated Aug 29, 2024 06:10 PM

SEE PRICE
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Tested using Methodology v1.2

Updated Nov 01, 2023 06:07 PM

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LG SC9S Picture
LG S77S Picture
Channels
Locked
Channels
Locked

Our Verdict

LG SC9S

LG S77S

The LG SC9S is a better 3.1.3 soundbar than the LG S77S. The SC9S is a better-built bar with a better stereo soundstage. It reproduces more low bass. It also has a room correction feature, which the S77S lacks, and it supports more wireless playback options.

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Variants

  • SC9S (Black)
  • S77S (Black)

Review

See LG SC9S Review
See LG S77S Review
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Check Price

Black
SC9S
SEE PRICE
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Black
S77S
SEARCH
Amazon.com
Black
SC9S
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Black
S77S
SEARCH
B&H
Black
SC9S
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Black
S77S
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Black
SC9S
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B&H
Black
S77S
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Black
SC9S
SEE PRICE
LG.com
Black
S77S
SEE PRICE
LG.com
Read more

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

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Full Comparison

Design

Style - Bar  

Style photo - bar  

LG SC9S Style photo - bar Sample

SAMPLE

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LG S77S Style photo - bar Sample

SAMPLE

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Show Text 

Style - Subwoofer  

Style photo - sub  

LG SC9S Style photo - sub Sample

SAMPLE

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LG S77S Style photo - sub Sample

SAMPLE

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Sub Wireless 
 

Locked
Locked

Enclosure 
 

Locked
Locked
Show Text 

Style - Satellites  

Style photo - satellites  

LG SC9S Style photo - satellites Sample

SAMPLE

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LG S77S Style photo - satellites Sample

SAMPLE

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Satellite Wireless 
 

Locked
Locked
Show Text 

Dimensions - Bar  

Dimensions photo - bar  

LG SC9S Dimensions photo - bar Sample

SAMPLE

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LG S77S Dimensions photo - bar Sample

SAMPLE

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Width  

Lock" (Lock cm)
Lock" (Lock cm)

Height  

Lock" (Lock cm)
Lock" (Lock cm)

Depth  

Lock" (Lock cm)
Lock" (Lock cm)
Show Text 

Dimensions - Subwoofer  

Dimensions photo - sub  

LG SC9S Dimensions photo - sub Sample

SAMPLE

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LG S77S Dimensions photo - sub Sample

SAMPLE

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Width  

Lock" (Lock cm)
Lock" (Lock cm)

Height  

Lock" (Lock cm)
Lock" (Lock cm)

Depth  

Lock" (Lock cm)
Lock" (Lock cm)
Show Text 

Dimensions - Satellites  

Dimensions photo - satellites  

LG SC9S Dimensions photo - satellites Sample

SAMPLE

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LG S77S Dimensions photo - satellites Sample

SAMPLE

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Width  

N/A
N/A

Height  

N/A
N/A

Depth  

N/A
N/A

Mounting 
 

Bar Mounting Holes  

LG SC9S Bar Mounting Holes Sample

SAMPLE

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LG S77S Bar Mounting Holes Sample

SAMPLE

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Satellite Mounting Holes  

LG SC9S Satellite Mounting Holes Sample

SAMPLE

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LG S77S Satellite Mounting Holes Sample

SAMPLE

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Mountable Bar 
 

Locked
Locked

Bar Brackets Included 
 

Locked
Locked

Mountable Satellites 
 

Locked
Locked

Satellite Brackets Included 
 

Locked
Locked
Show Text 

Build Quality 
 

N/A
N/A

Build quality photo  

LG SC9S Build quality photo Sample

SAMPLE

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LG S77S Build quality photo Sample

SAMPLE

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In The Box 
 

In The Box photo   

LG SC9S In The Box photo Sample

SAMPLE

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LG S77S In The Box photo Sample

SAMPLE

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Show Text 
Sound

Stereo Frequency Response 
 

N/A
N/A

Stereo Setup  

LG SC9S Stereo Setup Sample

SAMPLE

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LG S77S Stereo Setup Sample

SAMPLE

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Raw Frequency Response  

LG SC9S Raw Frequency Response Sample

SAMPLE

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LG S77S Raw Frequency Response Sample

SAMPLE

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Frequency Response Small  

LG SC9S Frequency Response Small Sample

SAMPLE

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LG S77S Frequency Response Small Sample

SAMPLE

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Channels 
 

Locked
Locked

Tested Preset 
 

Locked
Locked

Slope 
 

Lock
Lock

Standard Error 
 

Lock dB
Lock dB

Low-Frequency Extension 
 

Lock Hz
Lock Hz

High-Frequency Extension 
 

Lock kHz
Lock kHz
Show Text 

Stereo Frequency Response With Preliminary Calibration 
 

N/A
N/A

Frequency Response Calibrated  

LG SC9S Frequency Response Calibrated Sample

SAMPLE

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LG S77S Frequency Response Calibrated Sample

SAMPLE

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Suggested Preset 
 

Locked
Locked

Suggested Bass Setting 
 

Lock
Lock

Suggested Treble Setting 
 

Lock
Lock

Slope 
 

Lock
Lock

Standard Error 
 

Lock dB
Lock dB

Low-Frequency Extension 
 

Lock Hz
Lock Hz

High-Frequency Extension 
 

Lock kHz
Lock kHz
Show Text 

Stereo Soundstage 
 

N/A
N/A

Crosstalk  

LG SC9S Crosstalk Sample

SAMPLE

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LG S77S Crosstalk Sample

SAMPLE

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Crosstalk Error 
 

Lock dB
Lock dB
Show Text 

Stereo Dynamics 
 

N/A
N/A

Dynamic Range Compression  

LG SC9S Dynamic Range Compression Sample

SAMPLE

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LG S77S Dynamic Range Compression Sample

SAMPLE

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SPL @ Max Volume 
 

Lock dB SPL
Lock dB SPL

DRC @ 90dB 
 

Lock dB

DRC @ Max Volume 
 

Lock dB
Lock dB
Show Text 

Stereo Total Harmonic Distortion 
 

N/A
N/A

THD  

LG SC9S THD Sample

SAMPLE

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LG S77S THD Sample

SAMPLE

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Weighted THD @ 80dB 
 

Lock

Weighted THD @ Max Volume 
 

Lock
Show Text 

Center 
 

N/A
N/A

Center Setup  

LG SC9S Center Setup Sample

SAMPLE

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LG S77S Center Setup Sample

SAMPLE

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Frequency Response  

LG SC9S Frequency Response Sample

SAMPLE

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LG S77S Frequency Response Sample

SAMPLE

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Localization 
 

Locked
Locked

Slope 
 

Lock
Lock

Std. Err. 
 

Lock dB
Lock dB

SPL @ Max Volume 
 

Lock dB SPL
Lock dB SPL

Weighted THD @ 80dB 
 

Lock
Lock

Weighted THD @ Max Volume 
 

Lock
Lock
Show Text 

Surround 5.1 
 

N/A
N/A

Surround Setup  

LG SC9S Surround Setup Sample

SAMPLE

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LG S77S Surround Setup Sample

SAMPLE

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Frequency Response  

LG SC9S Frequency Response Sample

SAMPLE

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LG S77S Frequency Response Sample

SAMPLE

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Localization 
 

Locked
Locked

Slope 
 

Lock
Lock

Std. Err. 
 

Lock dB
Lock dB

SPL @ Max Volume 
 

Lock dB SPL
Lock dB SPL

Weighted THD @ 80dB 
 

Lock
Lock

Weighted THD @ Max Volume 
 

Lock
Lock

7.1 Rears 
 

Locked
Locked
Show Text 

Height (Atmos) 
 

N/A
N/A

Height Setup  

LG SC9S Height Setup Sample

SAMPLE

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LG S77S Height Setup Sample

SAMPLE

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H Frequency Response  

LG SC9S H Frequency Response Sample

SAMPLE

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LG S77S H Frequency Response Sample

SAMPLE

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Localization 
 

Locked
Locked

Slope 
 

Lock
Lock

Std. Err. 
 

Lock dB
Lock dB

SPL @ Max Volume 
 

Lock dB SPL
Lock dB SPL

Weighted THD @ 80dB 
 

Lock
Lock

Weighted THD @ Max Volume 
 

Lock
Lock
Show Text 

Sound Enhancement Features 
 

N/A
N/A

Room Correction 
 

Locked
Locked

Dialogue Enhancement 
 

Locked
Locked

Auto-Volume/Night Mode 
 

Locked
Locked

Subwoofer Level Adjustment 
 

Locked
Locked

Bass Adjustment 
 

Locked
Locked

Treble Adjustment 
 

Locked
Locked

EQ 
 

Locked
Locked

Surround Level Adjustment 
 

Locked
Locked

Rear Level Adjustment 
 

Locked
Locked

Height Level Adjustment 
 

Locked
Locked

Virtual Surround 
 

Locked
Locked
Show Text 
Connectivity

Inputs/Outputs - Bar 
 

Physical Connections Bar Photo 1  

LG SC9S Physical Connections Bar Photo 1 Sample

SAMPLE

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LG S77S Physical Connections Bar Photo 1 Sample

SAMPLE

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Physical Connections Bar Photo 2  

LG SC9S Physical Connections Bar Photo 2 Sample

SAMPLE

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LG S77S Physical Connections Bar Photo 2 Sample

SAMPLE

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Optical Audio In 
 

Locked
Locked

HDMI Out 
 

Locked
Locked

HDMI 2.1 Class Bandwidth 
 

Locked
Locked

Full HDMI In 
 

Locked
Locked

Analog Audio In 3.5mm (Aux) 
 

Locked
Locked

RCA In 
 

Locked
Locked

USB for Files 
 

Locked
Locked

Ethernet 
 

Locked
Locked

Subwoofer Output 
 

Locked
Locked
Show Text 

Audio Format Support: ARC/eARC 
 

N/A
N/A

Dolby Atmos 
 

Locked
Locked

Dolby Digital 
 

Locked
Locked

Dolby Digital Plus 
 

Locked
Locked

Dolby TrueHD 
 

Locked
Locked

DTS 
 

Locked
Locked

DTS:X 
 

Locked
Locked

DTS-HD MA 
 

Locked
Locked

PCM Channels 
 

Locked
Locked
Show Text 

Audio Format Support: HDMI In 
 

N/A
N/A

Dolby Atmos 
 

Locked
Locked

Dolby Digital 
 

Locked
Locked

Dolby Digital Plus 
 

Locked
Locked

Dolby TrueHD 
 

Locked
Locked

DTS 
 

Locked
Locked

DTS:X 
 

Locked
Locked

DTS-HD MA 
 

Locked
Locked

PCM Channels 
 

Locked
Locked
Show Text 

Audio Format Support: Optical 
 

N/A
N/A

Dolby Digital 
 

Locked
Locked

DTS 
 

Locked
Locked

PCM Channels 
 

Locked
Locked
Show Text 

Audio Latency: ARC 
 

N/A
N/A

ARC Latency Video  

LG SC9S ARC Latency Video Sample

SAMPLE

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LG S77S ARC Latency Video Sample

SAMPLE

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PCM-2.0 ch 
 

Lock ms

PCM-5.1 ch 
 

Lock ms

Dolby MAT (PCM) Atmos 
 

Lock ms

Dolby Digital 
 

Lock ms

Dolby Digital Plus 
 

Lock ms

Dolby Digital Plus Atmos 
 

Lock ms
Show Text 

Audio Latency: HDMI In 
 

N/A
N/A

HDMI Latency Video  

LG SC9S HDMI Latency Video Sample

SAMPLE

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LG S77S HDMI Latency Video Sample

SAMPLE

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Latency Video  

LG SC9S Latency Video Sample

SAMPLE

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LG S77S Latency Video Sample

SAMPLE

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PCM-2.0 ch 
 

Lock ms

PCM-5.1 ch 
 

Lock ms

Dolby MAT (PCM) Atmos 
 

Lock ms

Dolby Digital 
 

Lock ms

Dolby Digital Plus 
 

Lock ms

Dolby Digital Plus Atmos 
 

Lock ms

ARC 
 

Lock ms

Optical 
 

Lock ms

Full HDMI In 
 

Lock ms
Show Text 

Audio Latency: Optical 
 

N/A
N/A

Optical Latency Video  

LG SC9S Optical Latency Video Sample

SAMPLE

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LG S77S Optical Latency Video Sample

SAMPLE

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PCM-2.0 ch 
 

Lock ms

Dolby Digital 
 

Lock ms
Show Text 

Video Passthrough To TV 
 

N/A
N/A

1080p Max Refresh Rate 
 

Locked
Locked

1080p @ 4:4:4 Max Refresh Rate 
 

Locked
Locked

4k Max Refresh Rate 
 

Locked
Locked

4k @ 120Hz @ 10-Bit 
 

Locked
Locked

4k @ 4:4:4 Max Refresh Rate 
 

Locked
Locked

8k Max Refresh Rate 
 

Locked
Locked

HDR10 Passthrough 
 

Locked
Locked

HDR10+ Passthrough 
 

Locked
Locked

Dolby Vision Passthrough 
 

Locked
Locked

HDMI Forum VRR Passthrough 
 

Locked
Locked

FreeSync Passthrough 
 

Locked
Locked

G-SYNC Passthrough 
 

Locked
Locked

ALLM Passthrough 
 

Locked
Locked
Show Text 

Wireless Playback 
 

N/A
N/A

Bluetooth 
 

Locked
Locked

Wi-Fi Playback 
 

Locked
Locked

Chromecast built-in 
 

Locked
Locked

Apple AirPlay 
 

Locked
Locked

Spotify Connect 
 

Locked
Locked
Show Text 
Additional Features

Interface 
 

Interface photo  

LG SC9S Interface photo Sample

SAMPLE

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LG S77S Interface photo Sample

SAMPLE

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Display 
 

Locked
Locked
Show Text 

Bar Controls 
 

Controls photo  

LG SC9S Controls photo Sample

SAMPLE

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LG S77S Controls photo Sample

SAMPLE

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Remote  

Remote photo  

LG SC9S Remote photo Sample

SAMPLE

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LG S77S Remote photo Sample

SAMPLE

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Show Text 

Voice Assistants Support 
 

Amazon Alexa 
 

Locked
Locked

Google Assistant 
 

Locked
Locked

Apple Siri 
 

Locked
Locked

Microphone Mute 
 

Locked
Locked
Show Text 

Check Price

Black
SC9S
SEE PRICE
BestBuy.com
Black
S77S
SEARCH
Amazon.com
Black
SC9S
SEE PRICE
Amazon.com
Black
S77S
SEARCH
B&H
Black
SC9S
SEE PRICE
Walmart.com
Black
S77S
SEARCH
BestBuy.com
Black
SC9S
SEARCH
B&H
Black
S77S
SEARCH
Walmart.com
Black
SC9S
SEE PRICE
LG.com
Black
S77S
SEE PRICE
LG.com
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LG SC9S

LG S77S

Comments

  1. Comparison
 • Posted 1 year ago

LG SC9S vs LG S77S: Main Discussion

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