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Home  >  Sound Bar Solutions >  Item # VOSB3821D6 (MFR# SB3821-D6)

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SB3821-D6 SmartCast 38` 2.1 Sound Bar System
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Vizio SB3821-D6 SmartCast 38" 2.1 Sound Bar System

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Condition: Brand new, USA Warranty
Introducing the VIZIO SmartCast 38" 2.1 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 38" 2.1 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 100 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 wireless subwoofer delivers roof-shaking bass as deep as 50 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: 38"
  • Sound Bar Speakers: Left & Right: 2.75"
  • Subwoofer Speakers: 5.25"
  • Subwoofer Frequency Response: 50 Hz
  • System Frequency: 50 Hz - 20kHz
  • Sound Pressure Level: 100 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
  • Installation: Table top and wall-mountable
  • Package Contents: Sound Bar, Wireless Subwoofer, 5' RCA to 3.5mm Stereo Mini Jack, 4' Optical Cable (Toslink), 5' Digital 75 ohm coaxial cable with RCA, 4' Power Cord for Subwoofer, 8' Power Cord for Sound Bar, Wall Mounts, Remote, Quick Start Guide


  • Analog Audio Input: Stereo RCA
  • Analog Audio Input: 3.5mm stereo mini jack
  • Digital Audio Input: RCA (Coaxial/SPDIF)
  • Digital Audio Output: Optical (Toslink)
  • USB Input: USB (for .WAV Audio Playback)
  • Bluetooth Input: Bluetooth 4.0 LE
  • Ethernet Input: RJ45 jack
  • IR Receiver: Up to 30 feet

Dimensions and Weight

  • Product Dimensions: 38.2"W x 3"H x 3"D
  • Product with Stand Weight: 5.8 lbs.
  • Subwoofer Dimensions: 8.38"W x 9.16"H x 8.38"D
  • Subwoofer Weight: 7 lbs.
  • Product Packaging Dimensions: 10.5"W x 40.25"H x 15.5"D
  • Product Packaging Weight: 17 lbs.

VIZIO Warranty

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

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Vizio SB3821-D6 SmartCast 38" 2.1 Sound Bar System

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