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Products
Vizio V Series V51-H6
Vizio SV510X-0806
Tested using Methodology v1.3
Updated Oct 24, 2024 02:30 PM
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Amazon.comTested using Methodology v1.3
Updated Jul 28, 2025 07:49 PM
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Channels5.1
Channels5.1
Our Verdict
Vizio V Series V51-H6
Vizio SV510X-0806
The Vizio V Series V51-H6 is an older soundbar compared to the 2024 Vizio SV510X-0806. While there's not much to split the two when it comes to performance, the newer model has some bells and whistles that edge it ahead. A major difference is the inclusion of Atmos support in the 2024 model, which is a welcome addition at a low price point. The older model also lacks DTS:X support and has a slightly worse surrounds performance. That said, the V Series has a more balanced frequency response out-of-the-box and a better dynamics performance, as well as optical support.
Variants
- V Series V51-H6 (Black)
- SV510X-0806 (Black)
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V Series V51-H6
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B&HMain Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
7.4
7.3
Height (Atmos)
0.0
5.5
Audio Format Support: Optical
10
0.0
Stereo Frequency Response
7.6
7.3
Audio Format Support: ARC/eARC
6.3
9.7
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
Partial, wired to wireless sub
Partial, wired to wireless sub
Dimensions - Bar
Dimensions photo - bar
Width
36.0" (91.5 cm)
33.0" (83.8 cm)
Height
2.2" (5.7 cm)
2.3" (5.8 cm)
Depth
3.2" (8.2 cm)
3.3" (8.3 cm)
Dimensions - Subwoofer
Dimensions photo - sub
Width
8.3" (21.2 cm)
6.1" (15.5 cm)
Height
9.8" (25.0 cm)
7.1" (18.0 cm)
Depth
8.3" (21.2 cm)
10.2" (26.0 cm)
Dimensions - Satellites
Dimensions photo - satellites
Width
4.8" (12.1 cm)
5.0" (12.6 cm)
Height
2.2" (5.7 cm)
2.3" (5.8 cm)
Depth
3.2" (8.2 cm)
3.2" (8.2 cm)
Mounting
Bar Mounting Holes
Satellite Mounting Holes
Mountable Bar
Yes
Yes
Bar Brackets Included
Yes
No
Mountable Satellites
Yes
Yes
Satellite Brackets Included
Yes
Yes
Build Quality
7.0
7.0
Build quality photo
In The Box
In The Box photo
Sound
Stereo Frequency Response
7.6
7.3
Stereo Setup
Raw Frequency Response
Frequency Response Small
Channels
5.1
5.1
Tested Preset
Direct
Direct
Slope
-0.66
-0.95
Standard Error
3.28 dB
3.98 dB
Low-Frequency Extension
40.0 Hz
43.6 Hz
High-Frequency Extension
19.9 kHz
19.9 kHz
Stereo Frequency Response With Preliminary Calibration
7.7
7.5
Frequency Response Calibrated
Suggested Preset
Direct
Direct
Suggested Bass Setting
-3
-4
Suggested Treble Setting
1
1
Slope
0.07
0.01
Standard Error
2.76 dB
2.97 dB
Low-Frequency Extension
43.0 Hz
46.2 Hz
High-Frequency Extension
19.9 kHz
19.9 kHz
Stereo Dynamics
8.6
8.2
Dynamic Range Compression
SPL @ Max Volume
95.3 dB SPL
92.2 dB SPL
DRC @ 90dB
0.21 dB
0.34 dB
DRC @ Max Volume
0.97 dB
0.62 dB
Center
8.1
8.0
Center Setup
Frequency Response
Localization
Discrete
Discrete
Slope
-0.81
-0.70
Std. Err.
3.42 dB
3.60 dB
SPL @ Max Volume
91.1 dB SPL
91.2 dB SPL
Weighted THD @ 80dB
0.63
1.07
Weighted THD @ Max Volume
1.68
3.62
Surround 5.1
7.0
7.7
Surround Setup
Frequency Response
Localization
Discrete
Discrete
Slope
-1.86
-1.25
Std. Err.
4.85 dB
3.20 dB
SPL @ Max Volume
90.2 dB SPL
92.7 dB SPL
Weighted THD @ 80dB
0.87
0.94
Weighted THD @ Max Volume
2.61
1.43
7.1 Rears
No
No
Height (Atmos)
0.0
5.5
Height Setup
H Frequency Response
Localization
Not Supported
Phantom (Front Firing Bar and Front Firing Satellites)
Slope
N/A
-1.34
Std. Err.
N/A
4.24 dB
SPL @ Max Volume
N/A
77.4 dB SPL
Weighted THD @ 80dB
N/A
1.53
Weighted THD @ Max Volume
N/A
0.31
Sound Enhancement Features
7.1
7.4
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
Yes
Yes
Rear Level Adjustment
No
No
Height Level Adjustment
No
Yes
Virtual Surround
Yes
Yes
Connectivity
Inputs/Outputs - Bar
Physical Connections Bar Photo 1
Physical Connections Bar Photo 2
Optical Audio In
1
No
HDMI Out
ARC
eARC
HDMI 2.1 Class Bandwidth
No
No
Full HDMI In
No
No
Analog Audio In 3.5mm (Aux)
1
No
RCA In
No
No
USB for Files
1
1
Ethernet
No
No
Subwoofer Output
No
No
Audio Format Support: ARC/eARC
6.3
9.7
Dolby Atmos
Not Supported
Supported
Dolby Digital
Supported
Supported
Dolby Digital Plus
Not Supported
Supported
Dolby TrueHD
Not Supported
Supported
DTS
Supported
Supported
DTS:X
Not Supported
Supported
DTS-HD MA
Not Supported
Supported
PCM Channels
2.0
2.1
Audio Format Support: HDMI In
0.0
0.0
Dolby Atmos
Not Supported
Not Supported
Dolby Digital
Not Supported
Not Supported
Dolby Digital Plus
Not Supported
Not Supported
Dolby TrueHD
Not Supported
Not Supported
DTS
Not Supported
Not Supported
DTS:X
Not Supported
Not Supported
DTS-HD MA
Not Supported
Not Supported
PCM Channels
Not Supported
Not Supported
Audio Format Support: Optical
10
0.0
Dolby Digital
Supported
Not Supported
DTS
Supported
Not Supported
PCM Channels
2.0
Not Supported
Audio Latency: ARC
7.3
7.6
ARC Latency Video
PCM-2.0 ch
N/A
70 ms
PCM-5.1 ch
N/A
N/A
Dolby MAT (PCM) Atmos
N/A
73 ms
Dolby Digital
109 ms
113 ms
Dolby Digital Plus
N/A
83 ms
Dolby Digital Plus Atmos
N/A
117 ms
Audio Latency: HDMI In
0.0
0.0
HDMI Latency Video
PCM-2.0 ch
N/A
N/A
PCM-5.1 ch
N/A
N/A
Dolby MAT (PCM) Atmos
N/A
N/A
Dolby Digital
N/A
N/A
Dolby Digital Plus
N/A
N/A
Dolby Digital Plus Atmos
N/A
N/A
Audio Latency: Optical
6.9
0.0
Optical Latency Video
PCM-2.0 ch
N/A
N/A
Dolby Digital
366 ms
N/A
Video Passthrough To TV
0.0
0.0
1080p Max Refresh Rate
Not Supported
Not Supported
1080p @ 4:4:4 Max Refresh Rate
Not Supported
Not Supported
4k Max Refresh Rate
Not Supported
Not Supported
4k @ 120Hz @ 10-Bit
Not Supported
Not Supported
4k @ 4:4:4 Max Refresh Rate
Not Supported
Not Supported
8k Max Refresh Rate
Not Supported
Not Supported
HDR10 Passthrough
No
No
HDR10+ Passthrough
No
No
Dolby Vision Passthrough
No
No
HDMI Forum VRR Passthrough
No
No
FreeSync Passthrough
No
No
G-SYNC Passthrough
No
No
ALLM Passthrough
No
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
No
Additional Features
Interface
Interface photo
Display
No
No
Bar Controls
Controls photo
Remote
Remote photo
Voice Assistants Support
Amazon Alexa
No
No
Google Assistant
No
No
Apple Siri
No
No
Microphone Mute
No
No
Check Price
Black
V Series V51-H6
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Amazon.comBlack
SV510X-0806
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Amazon.comBlack
V Series V51-H6
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B&HBlack
SV510X-0806
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BestBuy.comBlack
V Series V51-H6
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BestBuy.comBlack
SV510X-0806
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Walmart.comBlack
V Series V51-H6
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Walmart.comBlack
SV510X-0806
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B&H
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Vizio V Series V51-H6 vs Vizio SV510X-0806: Main Discussion
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