VIZIO S4251W-B4 5.1 Channel Home Theater Sound Bar with Subwoofer and Bluetooth

Walmart #: 551310377
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  • True 5.1 surround sound system
  • Up to 102 dB of room-filling sound
  • Rear Satellite Speakers and Wireless Subwoofer
  • Built-in Bluetooth, LCD display remote and all cables included
  • Gifting note: This item ships in the manufacturer's original packaging. If intended as a gift, the packaging may reveal the contents.

    About this item

    With the VIZIO S4251W-B4 5.1-Channel Home Theater Sound Bar you can immerse yourself in the sounds of your favorite movies, TV shows and music. You can arrange the satellite speakers, wireless subwoofer and sound bar in optimal locations so that audio can come across loud and clear. Bluetooth-capable devices, such as smartphones, can also stream music wirelessly to the VIZIO Sound Bar with Subwoofer and Satellite Speakers.


    Primary Color: Black
    Multi Pack Indicator: No
    Battery Type: Does Not Contain a Battery
    Model No.: S4251w-B4
    Shipping Weight (in pounds): 33.0
    Product in Inches (L x W x H): 42.32 x 3.15 x 3.74
    Assembled in Country of Origin: Imported
    Origin of Components: Imported
    Walmart No.: 551310377

    Customer reviews

    Customer Reviews | 414 reviews | 4.6 out of 5

    4.5 stars

    414 reviews | 4.6 out of 5

    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Would recommend to a friend



    Huge bang for the buck!

    Customer review by NWBluesman

    5.0 stars by NWBluesman

    I spent several years of my life immersed in the world of high-end audio, enjoying speaker systems from Dahlquist, Infinity, Magneplanar, and ADS. Along with that would be electronics from the likes of Hafler, LUX, APT, SAE, and Audio Research. Years later, when I wanted to put together a very reasonably priced video system, this speaker system really tweaked me. It is a very nice, spacious sounding sound bar and a bluetooth 6" subwoofer. Plenty to provide decent audio for a 55" HD video system, right. But, this system incorporates 2 more speakers that run off the subwoofer to provide the spaciousness that a true 5.1 system gives. No speaker cables running across the floor, either. No worrying about crawling through the attic or in the crawl space to run your wires to these rear speakers. And a true 5.1 speaker system, to boot. Who could ask for more? I am extremely pleased with the sound of this system. It will even work very nicely in a pretty large room. Way to go, Vizio!

    Was this review helpful? (205) (35)
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    Northwest US
    Would recommend to a friend? Yes
    Ownership:2 - 7 weeks
    Age:55 - 64
    Usage:Every day
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.
    Tremendous Sound

    Customer review by Bub1023

    5.0 stars by Bub1023

    I'd been waiting for this since it was debuted at CES and when it finally came out I picked it up. And I am SO happy that I bought it. The sound is fantastic, the whole setup took less than 30 minutes and it blew me away and exceeded expectations. The wireless subwoofer pumps out decent (adjustable bass) and the rear satellite speakers connect via ~40ft RCA cable to the sub. To test the sound I watched the Blu-ray of Season 2 of Game of Thrones and from the theme music delivering bass to the forest scenes delivering true surround sound from the rear speakers I am very satisfied. The sound bar itself is loud and clear, and its volume can be lowered by itself, as can the rear speakers and subwoofer. I did not use the the wall mount brackets that come with the package, I put the satellite speakers on stands and the sound bar on the tv stand.

    Was this review helpful? (163) (23)
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    Phila, PA
    Would recommend to a friend? Yes
    Ownership:1 week or less
    Age:25 - 34
    Usage:Every day
    Better than a 'Snickers' bar

    Customer review by iamsam1956

    5.0 stars by iamsam1956

    First things first, my ears are 75 years old so I am blessed to hear anything, not sure I should be telling anyone about how great this sound bar sounds. With that in mind, feel free to skip to the next review, however, I can still give you some useful info on the set up of this bar. In a word, 'simple', setup is a snap but the remote is a little more challenging, may take some time to familiarize the buttons and how to move around the menu, but still not difficult. Two problems, the sound levels and the LED display, both need a little work. The LED display is hard to see in a dark room which is how most people watch TV, but my eyes are the same age as my ears, this may not be a problem for you. The sound level is very difficult to get adjusted to, one click on the remote button and you go from a 'funeral' setting to a 'rock' concert setting, one click of the button on this remote is comparable to five clicks on your normal TV remotes. If you can adjust to these two mild inconveniences this is a great bar for the money, Sam

    Was this review helpful? (54) (9)
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    Collierville, Tn
    Would recommend to a friend? Yes
    Ownership:2 - 7 weeks
    Age:65 or older
    Usage:Every day
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.
    1-3 of 402 total reviews See all

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    Im really interested in the Vizio S4251W-B4. I believe the rear speakers are wired to the subwoofer and the subwoofer communicates wirelessly with the soundbar (which is perfectly fine with me). Does anyone have any additional information on whether the wireless communication between soundbar and subwoofer will introduce any wifi interference? Does anyone know if the wireless communication is indeed on the 2.4 GHz spectrum? Im concerned that the wireless communication between the soundbar and subwoofer will interfere with my router's wifi connection which I will use to stream to TV and Bluray player.
    by newton 5/9/2013
    • The sub-woofer is a bluetooth device, so it will not interfere with the 2.4 GHz spectrum.
      by CramBone1/22/2015
      Was this answer helpful? (10) (0)
    • I had this unit for a week and I do not experience any problem with any of my wireless device (phone, internet, wireless microphone).
      by Chris52391/13/2015
      Was this answer helpful? (7) (0)
    • Thank you for inquiring about our product. The soundbar uses a pairing function to link to only the Subwoofer, preventing wireless interference. Thanks and have a great day!
      by VIZIOEntertainmentExpert1/20/2015
      Was this answer helpful? (8) (0)
    • The sound system is on the 5ghz spectrum according to Vizio customer service. It does not cause any interference with my wifi. I've been using it daily for a few weeks with no issues.
      by Bub10231/13/2015
      Was this answer helpful? (8) (0)
    1-3 of 122 questions See all

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