Vizio M Series M512a-H6  Soundbar Review

Review updated Aug 19, 2022 at 12:43pm
Writing modified Oct 24, 2024 at 10:31am
Tested using Methodology v1.3 
Vizio M Series M512a-H6
0.0
Mixed Usage 
0.0
Dialogue/TV Shows 
0.0
Music 
0.0
Movies 
 20

The Vizio M Series M512a-H6 is a 5.1.2 setup released in 2021. It's a mid-range offering from the manufacturer that's one of the few bars in its price range to include rear satellites for a more immersive surround sound. As with many Vizio bars, you have to wire the satellites to the sub, which isn't ideal for every living room setup. Without up-firing drivers on its satellites, it doesn't sound quite as immersive as the more premium Vizio Elevate.

Note: We bought and tested another unit in compliance with our out-of-spec policy. We've tested the new unit and have updated the review accordingly.

Our Verdict

0.0
Mixed Usage 

The Vizio M512a-H6 is very good for mixed usage. It's a versatile 5.1.2 bar that stands out from other bars at its wallet-friendly price point. Plug it into your TV, and voices and lead instruments are clear right out of the box, thanks to its balanced sound. The sub brings rumble in the bass to bring bass-heavy genres and action-packed scenes to life, and its satellites can add to the immersive feeling of movies, although they produce a lot of distortion at high volumes. Compared to more premium offerings, it doesn't bring the same cinematic feeling, especially with Atmos content, but if you're on a tighter budget, it's a solid pick.

Pros
  • Bass and treble adjustments.
  • Gets loud.
  • Clear vocal reproduction.
Cons
  • No graphic EQ.
0.0
Dialogue/TV Shows 

The Vizio M512a-H6 is great for vocal-centric TV shows and podcasts. It's a 5.1.2 setup, so there's a discrete center channel to improve vocal reproduction. With its balanced mids, dialogue is clear and detailed, and you don't have trouble following the action on screen. If you want voices to sound even more clear and crisp, there's a dialogue enhancement feature on hand. You can easily stream podcasts from your mobile devices over Bluetooth, though unfortunately, you can't do so over Wi-Fi, AirPlay, or Chromecast.

Pros
  • Clear vocal reproduction.
  • Dialogue enhancement feature.
  • Bluetooth-enabled.
Cons
  • No graphic EQ.
0.0
Music 

The Vizio M512a-H6 is very good for music. Its sound profile is fairly balanced out of the box, especially in the mids, where most voices and lead instruments reproduce. Thanks to its dedicated subwoofer, you get plenty of rumble in the bass. As a result, it's suitable for most music genres. A few customization tools are on hand to switch up its sound, including bass and treble adjustments. Unfortunately, you don't get a full graphic EQ to customize across the range.

Pros
  • Bass and treble adjustments.
  • Gets loud.
Cons
  • No graphic EQ.
0.0
Movies 

The Vizio M512a-H6 is good for movies. Especially compared to other bars at its price point, it performs well. You can watch common surround sound formats like Dolby Digital as well as object-based formats like Dolby Atmos, which are found on most streaming services. Its satellites offer a fairly immersive listening experience, too, so sound effects seem to come from all around you as if you're right in the middle of your favorite movie. However, it doesn't reproduce the same feeling of height as more premium setups, and the surround performance is uneven, resulting in a bit less of a dimensional sound.

Pros
  • Gets loud.
  • Supports Dolby Atmos.
Cons
  • No graphic EQ.
  • 0.0
    Mixed Usage
  • 0.0
    Dialogue/TV Shows
  • 0.0
    Music
  • 0.0
    Movies
  • Changelog

    1.  Updated Oct 24, 2024: 

      We've added a comparison between this soundbar and the Vizio SV510X-0806 in Dimensions - Bar.

    2.  Updated Jul 24, 2024: We've updated our Surrounds 5.1 text to reflect this bar's performance after changing the position of the subwoofer, as recommended by Vizio.
    3.  Updated Jan 29, 2024: Per TBU 1.3 methodology, we updated the text in the Stereo Sound boxes after retesting with the manufacturer's recommended settings. Also added text to Audio Latency: ARC, Audio Latency: HDMI In, and Audio Latency: Optical boxes. Some updates to the usages to be in line with these changes.
    4.  Updated Jan 29, 2024: We've converted this review to Test Bench Update 1.3. If applicable, we've retested stereo sound based on the manufacturer's recommendations. Additionally, we've expanded our audio latency tests to the following boxes: Audio Latency: ARC, Audio Latency: HDMI In, and Audio Latency: Optical. You can see the full changelog here.

    Check Price

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    Differences Between Sizes And Variants

    The Vizio M512a-H6 comes in Black, and you can see the label for the model we tested here.

    If you come across another version of this soundbar, let us know in the discussions, and we'll update our review.

    Popular Soundbar Comparisons

    The Vizio M512a-H6 is a mid-range 5.1.2 soundbar with satellites and a subwoofer included. It's pretty versatile, especially compared to other bars at its price point, like the LG SP8YA. You won't find as many customization tools as with more premium bars, and there's not as much of a cinematic feel with Atmos content. Still, if you don't want to spend a lot on a bar, it's a solid value pick.

    See our recommendations for the best 5.1 soundbars, the best Vizio soundbars, and the best Dolby Atmos soundbars.

    Vizio M Series M51ax-J6

    The Vizio M Series M51ax-J6 is slightly better than the Vizio M Series M512a-H6 if you watch a lot of 5.1 surround sound content or play audio loudly. However, the M512a-H6 is better for music, has a better soundstage, and is better built, with slightly greater passthrough capabilities. It even comes with two up-firing speakers.

    Vizio M Series M51a-H6

    The Vizio M Series M51a-H6 is better than the Vizio M Series M512a-H6, though it depends on the kinds of audio you listen to. The M51a-H6 has a better surround sound and lower latency. However, the M512a-H6 is better built and has a better soundstage performance with slightly better passthrough capabilities. It also comes with two up-firing speakers.

    Hisense AX5125H

    The Hisense AX5125H and the Vizio M Series M512a-H6 are similarly priced 5.1.2 Dolby Atmos soundbars. The Vizio is the better option, largely thanks to its improved stereo soundstage performance. It also has a few more sound enhancement features and better latency performance.

    Vizio Elevate

    Depending on your listening habits, you may prefer either the Vizio Elevate or the Vizio M Series M512a-H6. The Elevate is better built and has a better Atmos performance. It supports more wireless playback options. The M Series has less compression at max volume, so your audio sounds cleaner during louder listening sessions.

    Show more 

    Test Results

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    RATINGS
    Category:
    All
    Design
    Style - Bar

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    Style - Subwoofer
    Sub Wireless
    LockedLocked
    Enclosure
    LockedLocked

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    Style - Satellites
    Satellite Wireless
    LockedLocked

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    Dimensions - Bar
    WidthLockedLock" (Lock cm)
    HeightLockedLock" (Lock cm)
    DepthLockedLock" (Lock cm)

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    Dimensions - Subwoofer
    WidthLockedLock" (Lock cm)
    HeightLockedLock" (Lock cm)
    DepthLockedLock" (Lock cm)

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    Dimensions - Satellites
    WidthLockedLock" (Lock cm)
    HeightLockedLock" (Lock cm)
    DepthLockedLock" (Lock cm)

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    Mounting
    Mountable Bar
    LockedLocked
    Bar Brackets Included
    LockedLocked
    Mountable Satellites
    LockedLocked
    Satellite Brackets Included
    LockedLocked
    0.0
    Build Quality

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    In The Box

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    Sound
    0.0
    Stereo Frequency Response
    SAMPLE
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    SAMPLE
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    Channels
    Locked5.1.2
    Tested Preset
    LockedLocked
    Slope
    LockedLock
    Standard Error
    LockedLock dB
    Low-Frequency Extension
    LockedLock Hz
    High-Frequency Extension
    LockedLock kHz

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    0.0
    Stereo Frequency Response With Preliminary Calibration
    SAMPLE
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    Suggested Preset
    LockedLocked
    Suggested Bass Setting
    LockedLock
    Suggested Treble Setting
    LockedLock
    Slope
    LockedLock
    Standard Error
    LockedLock dB
    Low-Frequency Extension
    LockedLock Hz
    High-Frequency Extension
    LockedLock kHz

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    0.0
    Stereo Soundstage
    SAMPLE
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    Crosstalk Error
    LockedLock dB

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    0.0
    Stereo Dynamics
    SAMPLE
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    SPL @ Max Volume
    LockedLock dB SPL
    DRC @ 90dB
    LockedLock dB
    DRC @ Max Volume
    LockedLock dB

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    0.0
    Center
    SAMPLE
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    Localization
    LockedLocked
    Slope
    LockedLock
    Std. Err.
    LockedLock dB
    SPL @ Max Volume
    LockedLock dB SPL
    Weighted THD @ 80dB
    LockedLock
    Weighted THD @ Max Volume
    LockedLock

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    0.0
    Surround 5.1
    SAMPLE
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    Localization
    LockedLocked
    Slope
    LockedLock
    Std. Err.
    LockedLock dB
    SPL @ Max Volume
    LockedLock dB SPL
    Weighted THD @ 80dB
    LockedLock
    Weighted THD @ Max Volume
    LockedLock
    7.1 Rears
    LockedLocked

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    0.0
    Height (Atmos)
    SAMPLE
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    Localization
    LockedLocked
    Slope
    LockedLock
    Std. Err.
    LockedLock dB
    SPL @ Max Volume
    LockedLock dB SPL
    Weighted THD @ 80dB
    LockedLock
    Weighted THD @ Max Volume
    LockedLock

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    0.0
    Sound Enhancement Features
    Room Correction
    LockedLocked
    Dialogue Enhancement
    LockedLocked
    Auto-Volume/Night Mode
    LockedLocked
    Subwoofer Level Adjustment
    LockedLocked
    Bass Adjustment
    LockedLocked
    Treble Adjustment
    LockedLocked
    EQ
    LockedLocked
    Surround Level Adjustment
    LockedLocked
    Rear Level Adjustment
    LockedLocked
    Height Level Adjustment
    LockedLocked
    Virtual Surround
    LockedLocked

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    Connectivity
    Inputs/Outputs - Bar
    Optical Audio In
    LockedLocked
    HDMI Out
    LockedLocked
    HDMI 2.1 Class Bandwidth
    LockedLocked
    Full HDMI In
    LockedLocked
    Analog Audio In 3.5mm (Aux)
    LockedLocked
    RCA In
    LockedLocked
    USB for Files
    LockedLocked
    Ethernet
    LockedLocked
    Subwoofer Output
    LockedLocked

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    0.0
    Audio Format Support: ARC/eARC
    Dolby Atmos
    LockedLocked
    Dolby Digital
    LockedLocked
    Dolby Digital Plus
    LockedLocked
    Dolby TrueHD
    LockedLocked
    DTS
    LockedLocked
    DTS:X
    LockedLocked
    DTS-HD MA
    LockedLocked
    PCM Channels
    LockedLocked

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    0.0
    Audio Format Support: HDMI In
    Dolby Atmos
    LockedLocked
    Dolby Digital
    LockedLocked
    Dolby Digital Plus
    LockedLocked
    Dolby TrueHD
    LockedLocked
    DTS
    LockedLocked
    DTS:X
    LockedLocked
    DTS-HD MA
    LockedLocked
    PCM Channels
    LockedLocked

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    0.0
    Audio Format Support: Optical
    Dolby Digital
    LockedLocked
    DTS
    LockedLocked
    PCM Channels
    LockedLocked

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    0.0
    Audio Latency: ARC
    SAMPLE
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    Vizio M Series M512a-H6 ARC Latency Video Sample
    PCM-2.0 ch
    LockedLock ms
    PCM-5.1 ch
    LockedLock ms
    Dolby MAT (PCM) Atmos
    LockedLock ms
    Dolby Digital
    LockedLock ms
    Dolby Digital Plus
    LockedLock ms
    Dolby Digital Plus Atmos
    LockedLock ms

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    0.0
    Audio Latency: HDMI In
    SAMPLE
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    Vizio M Series M512a-H6 HDMI Latency Video Sample
    PCM-2.0 ch
    LockedLock ms
    PCM-5.1 ch
    LockedLock ms
    Dolby MAT (PCM) Atmos
    LockedLock ms
    Dolby Digital
    LockedLock ms
    Dolby Digital Plus
    LockedLock ms
    Dolby Digital Plus Atmos
    LockedLock ms

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    0.0
    Audio Latency: Optical
    SAMPLE
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    Vizio M Series M512a-H6 Optical Latency Video Sample
    PCM-2.0 ch
    LockedLock ms
    Dolby Digital
    LockedLock ms

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    0.0
    Video Passthrough To TV
    1080p Max Refresh Rate
    LockedLocked
    1080p @ 4:4:4 Max Refresh Rate
    LockedLocked
    4k Max Refresh Rate
    LockedLocked
    4k @ 120Hz @ 10-Bit
    LockedLocked
    4k @ 4:4:4 Max Refresh Rate
    LockedLocked
    8k Max Refresh Rate
    LockedLocked
    HDR10 Passthrough
    LockedLocked
    HDR10+ Passthrough
    LockedLocked
    Dolby Vision Passthrough
    LockedLocked
    HDMI Forum VRR Passthrough
    LockedLocked
    FreeSync Passthrough
    LockedLocked
    G-SYNC Passthrough
    LockedLocked
    ALLM Passthrough
    LockedLocked

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    0.0
    Wireless Playback
    Bluetooth
    LockedLocked
    Wi-Fi Playback
    LockedLocked
    Chromecast built-in
    LockedLocked
    Apple AirPlay
    LockedLocked
    Spotify Connect
    LockedLocked

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    Additional Features
    Interface
    Display
    LockedLocked

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    Bar Controls

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    Remote

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    Voice Assistants Support
    Amazon Alexa
    LockedLocked
    Google Assistant
    LockedLocked
    Apple Siri
    LockedLocked
    Microphone Mute
    LockedLocked

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