VIZIO SB4031-D5 40" Smartcast 3.1 Slim Soundbar System

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VizioSKU: SB4031-D5

Sale price$379.99 Regular price$479.99
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  • Condition: New
    This product is brand new with a full manufacturer warranty
  • Warranty: 90 Day Manufacturer Warranty


VIZIO SB4031-D5 40" Smartcast 3.1 Slim Soundbar System sb4031-d5c-1.jpg


Enhance your TV's audio with the VIZIO SmartCast 40" 3.1-Channel Soundbar System. It features a soundbar with 4" left, right, and center drivers, and a 6.5" wireless subwoofer for low bass impact. Its ability to decode Dolby and DTS signals is designed to improve the quality of your sound compared to your TV speakers alone.

The SmartCast 40" soundbar has Bluetooth connectivity for pairing with your compatible smart device and wirelessly streaming your audio content. Its wired connections include HDMI, optical, 1/8", USB, and digital coaxial inputs to support a variety of source types. Its HDMI output is ARC-compatible, so you can hear TV-based audio from built-in apps like Netflix and YouTube. It includes an IR remote control and a number of cables for instant connectivity.


  • 3.1-Channel Configuration
  • Bluetooth Audio Streaming
  • External Wireless Subwoofer
  • Slim Subwoofer Fits Under Couch

Sound That Moves You

From the roar of a crowd to the screech of a car chase, experience every detail as loud as 101 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 bass as deep as 35 Hz.

Slim Profile Subwoofer

With a thinner design and detachable legs, the subwoofer allows a horizontal or vertical position that fits conveniently beside or beneath your furniture.

Experience VIZIO SmartCast

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

Turn Your Phone into a Remote

Set up and control your soundbar with the VIZIO SmartCast App. Search and browse content across multiple apps at once. Control multiple VIZIO SmartCast soundbars or speakers from anywhere in your home. Download it for free from the Apple App Store or Google Play.

Cast from Apps You Already Know and Love

The SmartCast 40" has Google Cast built-in, which allows you to cast your favorite content from your phone to your TV/home theater display or soundbar. Access millions of songs, podcasts, and more.


DTS audio technologies are designed to enable richer sound and dialogue with deeper bass.

Dolby Audio

Dolby audio technologies are designed to provide dynamic sound for your TV shows, movies, and music.


Channels 3.1
Drivers Left, Right, Center: 1 x 4" (10.2 cm) driver
  Subwoofer: 1 x 6.5" (16.5 cm)
Sound Pressure Level 101 dB
Frequency Response Soundbar: 150 Hz to 20 kHz
  Subwoofer: 35 to 150 Hz
Total Harmonic Distortion (THD) <1%
Audio Processing Dolby Digital, DTS Studio Sound, DTS TruSurround, DTS TruVolume
Inputs 1 x HDMI
  1 x Digital coaxial
  1 x Optical TOSLINK
  1 x 1/8" (3.5 mm) stereo
  1 x USB (for .WAV audio playback only)
  1 x Ethernet LAN
Output 1 x HDMI with ARC
Bluetooth Version 4.1 BLE
Wi-Fi 802.11n
Remote Control Yes, with LCD display
IR Range 30' (9.1 m)
Buttons Power, input, Bluetooth, volume up, volume down
Installation Tabletop and wall-mountable
Dimensions (W x H x D) Soundbar: 40 x 2.05 x 2" (101.6 x 5.2 x 5.1 cm)
  Subwoofer: 24.2 x 13.1 x 3.06" (61.5 x 33.3 x 7.8 cm)
Weight Soundbar: 3.42 lb (1.6 kg) with feet
  Subwoofer: 9.59 lb (4.3 kg)
Packaging Info
Package Weight 23 lb
Box Dimensions (LxWxH) 42.5 x 15.3 x 7.3"

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