38” 2.1 Home Theater Sound Bar with Wireless Subwoofer

38” 2.1 Home Theater Sound Bar with Wireless Subwoofer

  • S3821w-C0



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38” 2.1 Home Theater Sound Bar with Wireless Subwoofer



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38” 2.1 Home Theater Sound Bar with Wireless Subwoofer


Audio Built to Boom.

Upgrade to Premium Audio.

Upgrade your TVs audio with VIZIO’s 38” 2.1 Home Theater Sound Bar with Wireless Subwoofer. The perfect addition to any small to medium sized HDTV, this sound bar connects easily to your TV with just one cable. The wireless subwoofer adds bass missing from your TV, all without the need to run any extra wires. Built-in Bluetooth allows you to wirelessly stream music from a smartphone or tablet, while Dolby Digital and DTS Digital Surround audio technologies turn movies, TV and games into an immersive audio experience. Rated at 100 dB with less than 1% Total Harmonic Distortion*, the S3821w is one serious audio upgrade.

dts TruVolume
dts TruSurround
Wireless Subwoofer
Bluetooth Connectivity

*Sound Pressure Level measured using pink noise at 1 meter, C-weighted. Total harmonic distortion calculated as electrical measurement of amplifier distortion.

**Wireless Subwoofer range approximately 60 feet – line of sight from Sound bar.

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 Size38”
  • Sound Bar SpeakersLeft & Right Channels (each) – 3.0” full-range drivers
  • Subwoofer Speaker6.0” Subwoofer
  • Sound Pressure Level100dB
  • Sound Bar Frequency50Hz - 19kHz
  • Subwoofer Frequency50Hz - 100Hz
  • Audio Decoding TechnologyDolby Digital
  • Sound Enhancement TechnologyDTS TruSurround, DTS TruVolume
  • Wireless Range (Subwoofer)60’ Line of sight
  • BluetoothYes
  • Sound Bar ButtonsPower, Input, Bluetooth, Volume Up, Volume Down
  • RemoteYes
  • Power Input120V 60Hz
  • InstallationTable top and wall-mountable
  • Package ContentsSound Bar, Wireless Subwoofer, Remote, RCA to 3.5mm Audio Cable, Digital Coaxial Cable, Optical Digital Cable, Wall mounts, Quick Start Guide, Sound Bar Power Cable, Wireless Subwoofer Power Cable


  • Analog Audio Input1x Stereo RCA
  • Analog Audio Input1x 3.5mm stereo mini jack
  • Digital Audio Input1x RCA (Coaxial)
  • Digital Audio Input1x Optical (Toslink)
  • USB Input1x USB (for .WAV audio Playback)

Dimensions and Weight

  • Product with Stand Weight5.2 lbs.
  • Product Packaging Weight20 lbs.

Vizio Warranty

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

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