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Home  >  Sound Bar Solutions >  Item # VOSB4451C0 (MFR# SB4451-C0)
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SB4451-C0 SmartCast 44` 5.1 Sound Bar System
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Vizio SB4451-C0 SmartCast 44" 5.1 Sound Bar System

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Condition: Brand new, USA Warranty
Introducing the VIZIO SmartCast 44" 5.1 Sound Bar System. Combining high-caliber audio with elegant style, and Google Cast built-in. What you love won't change, but how you experience it will never be the same.
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Simply Immersive

Introducing the VIZIO SmartCast 44" 5.1 Sound Bar System. Combining high-caliber audio with elegant style, and Google Cast built in. What you love won't change, but how you experience it will never be the same

Sound That Moves You

From the roar of a crowd to the screech of a car chase, experience every detail in amazing clarity as loud as 103 dB with less than 1% Total Harmonic Distortion.

Bass You Can Feel

From the rumble of a concert to the pulse of your party playlist, the slender wireless subwoofer delivers roof-shaking bass as deep as 40 Hz.

Experience VIZIO SmartCast

VIZIO SmartCast brings together your favorite entertainment into one simple experience. Discover, cast and control your music on your Sound Bar from your mobile device using VIZIO SmartCast App.

Turn Your Phone Into The Ultimate Remote

Easily set up and control your Sound Bar like never before with the VIZIO SmartCast App. Download for free on the App Store and Google Play.

VIZIO SmartCast App

Download the VIZIO SmartCast app to turn your smartphone or tablet into a powerful touchscreen remote. Search and browse content across multiple apps at once. Control multiple VIZIO SmartCast sound bars or speakers from anywhere in your home.

Cast From Apps You Already Know and Love

All VIZIO SmartCast audio products have Google Cast built in - the same technology behind Chromecast - which allows you to cast your favorite content from your phone to your TV/Display or Sound Bars. Access millions of songs, podcasts and more.

Elevated Engineering

VIZIO SmartCast Sound Bars are crafted with custom drivers and technologies from the industry leaders of audio.


Tech Specs

  • Sound Bar Size: 44"
  • Sound Bar Speakers: Left & Right: 2 x 2.75" / Center: 2 x 2.75"
  • Sound Bar Frequency Response: Left & Right: 90 Hz - 20 kHz / Center: 160 Hz - 20 kHz
  • Subwoofer Frequency Response: 40 Hz - 90 Hz
  • Satellite Speaker Frequency: 170 Hz ? 20 kHz
  • System Frequency: 40 Hz - 20 kHz
  • Sound Pressure Level: 103 dB
  • Sound Enhancement Technology: Dolby Digital, DTS Studio Sound, DTS TruSurround, DTS TruVolume
  • Sound Bar Buttons: Power, Input, Bluetooth, Volume Up, Volume Down
  • Remote: Yes w/ LCD Display
  • Installation: Table top and wall-mountable
  • Package Contents: Sound Bar, Wireless Subwoofer, Rear Satellite Speakers (x2), 5' RCA to 3.5mm (Audio Cable), 5' RCA to RCA, 5' Digital Coaxial, 5' Optical Cable (Toslink), 6' HDMI Cable, Power Cord (x2), Remote, Satellite Speaker Wires, Quick Start Guide


  • Analog Audio Input: Stereo RCA Pair
  • Digital Audio Input: RCA (Coaxial/SPDIF)
  • Digital Audio Output: Optical (Toslink)
  • USB Input: USB (for .WAV Audio Playback)
  • Bluetooth Input: Bluetooth 4.1 LE
  • HDMI Input: HDMI
  • Wi-Fi Input: 802.11n
  • Ethernet Input: RJ45 jack
  • Output 1: HDMI ARC
  • IR Receiver: Up to 30 feet

Dimensions and Weight

  • Product Dimensions: 44"W x 3.1"H x 3.0"D
  • Product with Feet Weight: 10.80 lbs.
  • Satellite Dimensions: 3.0"W x 5.93"H x 3.0"D
  • Satellite Weight: 1.3 lbs
  • Subwoofer Dimensions: 11.9"W x 12.3"H x 11.9"D
  • Subwoofer Weight: 20.7 lbs.
  • Product Packaging Dimensions: 47.44"W x 18.62"H x 14.65"D
  • Product Packaging Weight:  43.21 lbs

VIZIO Warranty

  • Warranty: One Year Parts & Labor. Free Lifetime Technical Support.

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Vizio SB4451-C0 SmartCast 44" 5.1 Sound Bar System

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