42” 5.1 Home Theater Sound Bar with Subwoofer and Satellite Speakers | S4251w-B4
Size: 42”

42” 5.1 Home Theater Sound Bar with Subwoofer and Satellite Speakers | S4251w-B4

42” 5.1 Home Theater Sound Bar with Subwoofer and Satellite Speakers | S4251w-B4

VIZIO Sound Bar.

Award-Winning Home Theater.

VIZIO 42 inch 5.1 Home Theater Awards
The All-New 5.1 Audio Experience.

Step up to immersive surround sound with VIZIOs new 5.1 home theater sound bar. Winner of CNET’s Best of CES 2013, the VIZIO S4251w-B4 combines amazing performance with innovative features to deliver an audio experience as crystal-clear as your HDTV picture in a design that’s remarkably easy to use.
VIZIO 5.1 Surround Sound Video

Next Level Audio Experience.

Full Surround Sound Immersion.

The VIZIO 5.1 home theater comes with a three channel sound bar, wireless subwoofer for thunderous bass, and rear satellite speakers that put you in the center of the action. TV, movies, sports and games will come to life in up to 102 dB of roof-raising volume with less than 1% of total harmonic distortion1.

Next Level Audio Experience
Dolby Digital
Dolby Digital®

The audio standard for cinema, broadcast, DVD, Blu-ray, and streaming content, Dolby Digital® surround sound provides dramatic spatial dimension to soundtracks and enhanced audio definition for an engaging listening experience.

DTS Digital Surround
DTS Digital Surround

DTS Digital Surround decoding delivers up to 5.1 discrete channels of surround sound at twice the audio resolution of other standard definition DVD video formats.

DTS Circle Surround
DTS Circle Surround

DTS Circle Surround is an advanced, highly versatile, patented multichannel matrix decoder capable of supporting a wide range of surround sound creation and playback applications.

DTS TruVolume
DTS TruVolume

DTS TruVolume is a revolutionary solution that provides a consistent and comfortable volume level for a more enjoyable multimedia experience. Simply set the volume once.

Convenient Connection.

Just Set It Up, Plug It In and Turn It On.

Connecting a single audio cable is all it takes to fill any room with rich immersive sound within minutes. Every VIZIO sound bar comes equipped with any connection you might need to get your audio booming quickly, with maximum convenience and minimal clutter.

Wireless Subwoofer
Bluetooth Connectivity
LCD Display Remote
VIZIO 5.1 Sound Bar System Unboxing Video

— For DTS patents, see http://patents.dts.com. Manufactured under license from DTS Licensing Limited. DTS, the Symbol, & DTS and the Symbol together are registered trademarks of DTS, Inc., DTS Digital Surround, DTS Circle Surround, DTS TruVolume, DTS TruSurround and DTS 3.0 are registered trademark of DTS, Inc. © DTS, Inc. All Rights Reserved.
— Dolby and the Dolby-D Symbol are registered trademarks of Dolby Laboratories.
— Bluetooth is a registered trademark of Bluetooth SIG, Inc.
1. S4251w-B4 is rated at 102 dB. Sound Pressure Level measured using pink noise at 1 meter, C-weighted. Total Harmonic Distortion calculated as electrical measurement of amplifier distortion.
2. Dolby Digital and DTS Digital Surround are available on select VIZIO sound bars only where specified and are not a standard feature.

VIZIO, Inc. has made every effort to ensure the accuracy of the information provided herein. All product specifications, functionality, features, configurations, performance, design and other product information described herein are subject to change without notice. VIZIO, Inc. disclaims liability for typographical, technical, or descriptive errors.

Tech Specs

  • Sound Bar Size42”
  • Sound Bar SpeakersLeft & Right Channels (each) – 2 x 3” mid-range drivers, 1 x ¾” tweeters
  • Sound Pressure Level102 dB
  • Sound Bar Frequency90 Hz - 20 kHz
  • Subwoofer Frequency40 Hz - 90 Hz
  • Audio Decoding TechnologyDolby Digital®, DTS Digital Surround
  • Sound Enhancement TechnologyDTS Circle Surround™, DTS TruVolume™
  • Wireless Range (Subwoofer)60’ Line of sight
  • BluetoothYes
  • Sound Bar ButtonsPower, Input, Bluetooth, Volume Up, Volume Down
  • RemoteYes – Display Remote
  • Power Input120V 60 Hz
  • InstallationTable top and wall-mountable
  • Package ContentsSound Bar, Wireless Subwoofer, 2x Rear Satellite Speakers, RCA Cables for Satellite Speakers, Display Remote, RCA to 3.5mm Audio Cable, Digital Coaxial Cable, Optical Digital Cable, Wall mounts, Quick Start Guide, Sound Bar Power Cable, Wireless Subwoofer


  • Analog Audio Input1 x Stereo RCA
  • Analog Audio Input1 x 3.5mm stereo mini jack
  • Digital Audio Input1 x RCA (Coaxial)
  • Digital Audio Input1 x Optical (Toslink)
  • USB Input1 x USB (for .WAV audio Playback)

Dimensions and Weight

  • Sound Bar Dimensions42.32”W x 3.74”H x 3.15”D
  • Product with Stand Weight8.9 lbs.
  • Satellite Dimensions3.18”W x 7.42”H x 2.77”D
  • Subwoofer Dimensions6.93”W x 12.52”H x 15.86”D
  • Subwoofer Weight14.7 lbs.
  • Product Packaging Dimensions44.5”W x 10”H x 18.6”D
  • Product Packaging Weight33 lbs.

VIZIO Warranty

  • WarrantyOne Year Parts & Labor. Free Lifetime Technical Support.

Support Links

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