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Vizio V Series V21x-J8 vs Vizio V Series V51x-J6
Side-by-Side Comparison
Products
Vizio V Series V21x-J8
Vizio V Series V51x-J6
Tested using Methodology v1.0
Updated Sep 03, 2024 07:13 PM
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Amazon.comTested using Methodology v1.3
Updated Oct 24, 2024 02:30 PM
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Amazon.com
Channels2.1
Channels5.1
Variants
- V Series V21x-J8 (Black)
- V Series V51x-J6 (Black)
Our Verdict
Vizio V Series V21x-J8
Vizio V Series V51x-J6
The Vizio V Series V51x-J6 is a better soundbar than the Vizio V Series V21x-J8. The V51x-J6 comes with discrete satellite speakers, so it offers better surround performance. It also has a more neutral sound profile and less compression at max volume. Thanks to its 5.1 setup, it has better center channel performance, too.
Main Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
6.8
7.1
Center
5.6
7.8
Surround 5.1
4.0
7.0
Stereo Dynamics
6.8
8.3
Full Comparison
Design
Style - Bar
Style photo - bar
Style - Subwoofer
Style photo - sub
Sub Wireless
Yes
Yes
Enclosure
Ported
Ported
Style - Satellites
Style photo - satellites
Satellite Wireless
No
Partial, wired to wireless sub
Dimensions - Bar
Dimensions photo - bar
Width
36.0" (91.5 cm)
36.0" (91.5 cm)
Height
2.3" (5.8 cm)
2.2" (5.7 cm)
Depth
3.2" (8.2 cm)
3.2" (8.2 cm)
Dimensions - Subwoofer
Dimensions photo - sub
Width
7.7" (19.5 cm)
7.7" (19.5 cm)
Height
8.4" (21.4 cm)
8.5" (21.5 cm)
Depth
7.7" (19.5 cm)
7.7" (19.5 cm)
Dimensions - Satellites
Dimensions photo - satellites
Width
N/A
4.8" (12.1 cm)
Height
N/A
2.2" (5.7 cm)
Depth
N/A
3.2" (8.2 cm)
Mounting
Bar Mounting Holes
Satellite Mounting Holes
Mountable Bar
Yes
Bar Brackets Included
Yes
Mountable Satellites
Yes
Satellite Brackets Included
Yes
Build Quality
7.0
7.0
Build quality photo
In The Box
In The Box photo
HDMI Cable Length
1.5 m (4.9 ft)
Digital Optical Cable Length
1.5 m (4.9 ft)
Back - Bar
Back photo - bar
Bar Mounting
Universal (holes on underside)
Back - Subwoofer
Back photo - sub
Enclosure
Ported
Ported
Back - Satellites
Back photo - satellites
Mounting
No
Sound
Stereo Frequency Response
7.4
7.3
Stereo Setup
Raw Frequency Response
Frequency Response Small
Channels
2.1
5.1
Tested Preset
Music
Direct
Slope
-1.11
-0.77
Standard Error
5.26 dB
3.68 dB
Low-Frequency Extension
33.2 Hz
44.3 Hz
High-Frequency Extension
17.0 kHz
19.9 kHz
Stereo Frequency Response With Preliminary Calibration
7.9
7.7
Frequency Response Calibrated
Suggested Preset
Music
Direct
Suggested Bass Setting
-5
-4
Suggested Treble Setting
1
0
Slope
-0.04
-0.04
Standard Error
3.40 dB
2.57 dB
Low-Frequency Extension
34.1 Hz
43.0 Hz
High-Frequency Extension
17.2 kHz
19.9 kHz
Stereo Soundstage
7.0
7.0
Crosstalk Error
2.74 dB
2.45 dB
Stereo Dynamics
6.8
8.3
Dynamic Range Compression
SPL @ Max Volume
94.5 dB SPL
92.7 dB SPL
DRC @ 90dB
0.26 dB
DRC @ Max Volume
3.81 dB
0.51 dB
Stereo Total Harmonic Distortion
7.3
Weighted THD @ 80dB
0.53
Weighted THD @ Max Volume
2.76
Center
5.6
7.8
Center Setup
Frequency Response
Localization
Phantom
Discrete
Slope
-1.50
-1.13
Std. Err.
6.20 dB
4.00 dB
SPL @ Max Volume
94.4 dB SPL
88.8 dB SPL
Weighted THD @ 80dB
0.52
0.56
Weighted THD @ Max Volume
2.83
1.28
Surround 5.1
4.0
7.0
Surround Setup
Frequency Response
Localization
Stereo (Downmix)
Discrete
Slope
0.62
-2.10
Std. Err.
3.39 dB
5.09 dB
SPL @ Max Volume
88.3 dB SPL
90.1 dB SPL
Weighted THD @ 80dB
0.72
0.71
Weighted THD @ Max Volume
3.62
1.86
7.1 Rears
No
No
Height (Atmos)
0.0
0.0
Height Setup
H Frequency Response
Localization
Not Supported
Not Supported
Slope
N/A
N/A
Std. Err.
N/A
N/A
SPL @ Max Volume
N/A
N/A
Weighted THD @ 80dB
N/A
N/A
Weighted THD @ Max Volume
N/A
N/A
Sound Enhancement Features
6.6
7.1
Room Correction
No
No
Dialogue Enhancement
Yes
Yes
Auto-Volume/Night Mode
Yes
Yes
Subwoofer Level Adjustment
Yes
Yes
Bass Adjustment
Yes
Yes
Treble Adjustment
Yes
Yes
EQ
Presets
Presets
Surround Level Adjustment
No
Yes
Rear Level Adjustment
No
No
Height Level Adjustment
No
No
Virtual Surround
Yes
Yes
Connectivity
Inputs/Outputs - Bar
Physical Connections Bar Photo 1
Physical Connections Bar Photo 2
Optical Audio In
1
1
HDMI Out
No
ARC
HDMI 2.1 Class Bandwidth
No
Full HDMI In
No
No
Analog Audio In 3.5mm (Aux)
1
1
RCA In
No
No
USB for Files
1
1
Ethernet
No
No
Subwoofer Output
No
HDMI ARC
1
Audio Format Support: ARC/eARC
7.6
6.3
Dolby Atmos
No
Not Supported
Dolby Digital
Yes
Supported
Dolby Digital Plus
Yes
Not Supported
Dolby TrueHD
No
Not Supported
DTS
Yes
Supported
DTS:X
No
Not Supported
eARC
No
DTS-HD MA
No
Not Supported
PCM Channels
2.0
5.1 PCM (eARC only)
No
Audio Format Support: HDMI In
0.0
0.0
Dolby Atmos
No
Not Supported
Dolby Digital
No
Not Supported
Dolby Digital Plus
No
Not Supported
Dolby TrueHD
No
Not Supported
DTS
No
Not Supported
DTS:X
No
Not Supported
DTS-HD MA
No
Not Supported
PCM Channels
Not Supported
5.1 PCM
No
Audio Format Support: Optical
10
10
Dolby Digital
Yes
Supported
DTS
Yes
Supported
PCM Channels
2.0
Audio Latency: ARC
7.2
ARC Latency Video
PCM-2.0 ch
N/A
PCM-5.1 ch
N/A
Dolby MAT (PCM) Atmos
N/A
Dolby Digital
110 ms
Dolby Digital Plus
N/A
Dolby Digital Plus Atmos
N/A
Audio Latency: HDMI In
8.1
0.0
HDMI Latency Video
Latency Video
PCM-2.0 ch
N/A
PCM-5.1 ch
N/A
Dolby MAT (PCM) Atmos
N/A
Dolby Digital
N/A
Dolby Digital Plus
N/A
Dolby Digital Plus Atmos
N/A
ARC
45 ms
Optical
69 ms
Full HDMI In
N/A
Audio Latency: Optical
6.9
Optical Latency Video
PCM-2.0 ch
150 ms
Dolby Digital
200 ms
Video Passthrough To TV
0.0
0.0
1080p Max Refresh Rate
Not Supported
1080p @ 4:4:4 Max Refresh Rate
Not Supported
4k Max Refresh Rate
Not Supported
4k @ 120Hz @ 10-Bit
Not Supported
4k @ 4:4:4 Max Refresh Rate
Not Supported
8k Max Refresh Rate
Not Supported
HDR10 Passthrough
No
No
HDR10+ Passthrough
No
Dolby Vision Passthrough
No
HDMI Forum VRR Passthrough
No
4k @ 60 Hz Passthrough
No
FreeSync Passthrough
No
G-SYNC Passthrough
No
ALLM Passthrough
No
4k @ 60 Hz @ 10 bit Passthrough
No
4k @ 60 Hz @ 4:4:4 Passthrough
No
Wireless Playback
6.0
6.0
Bluetooth
Yes
Yes
Wi-Fi Playback
No
No
Chromecast built-in
No
No
Apple AirPlay
No
No
Spotify Connect
No
Connectivity - Subwoofer
Physical inputs subwoofer photo 1
Physical controls subwoofer photo 1
Sub Wireless
Yes
Yes
Connectivity - Satellites
Physical inputs satellites photo 1
Physical controls satellites photo 1
Sat Wireless
No
Partial, wired to wireless sub
Additional Features
Interface
Interface photo
Display
No
No
Bar Controls
Controls photo
Remote
Remote photo
Universal Remote
No
Voice Assistants Support
Amazon Alexa
No
No
Google Assistant
No
No
Apple Siri
No
No
Microphone Mute
No
App
App image
App Name
No App
iOS
No
Android
No
Acts As A Remote
No
Controls Soundbar's Settings
No
Casts Device Files
No
Other Features
Power Saving
Auto-off
HDMI CEC (TV Remote Control)
Yes
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Vizio V Series V21x-J8
Vizio V Series V51x-J6
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Vizio V Series V21x-J8 vs Vizio V Series V51x-J6: Main Discussion
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