VIZIO 2.1 SB3821-C6 Bluetooth Wireless Soundbar

Last updated date: October 15, 2020

DWYM Score

7.3

VIZIO 2.1 SB3821-C6 Bluetooth Wireless Soundbar

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We looked at the top Wireless Soundbars and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Wireless Soundbar you should buy.

Editor's Note November 9, 2020:
Checkout The Best Wireless Soundbar for a detailed review of all the top wireless soundbars.

Overall Take


In our analysis of 32 expert reviews, the VIZIO VIZIO 2.1 SB3821-C6 Bluetooth Wireless Soundbar placed 7th when we looked at the top 7 products in the category. For the full ranking, see below.

From The Manufacturer

Upgrade your TV audio to a premium experience with the VIZIO 38” 2.1 Sound Bar System and Wireless Subwoofer, a great fit for 42”+ Class TVs. The Sound Bar system packs a punch with a wireless subwoofer and integrated Dolby and DTS audio technologies, delivering a room filling audio experience with deep thumping bass—all in a sophisticated new design. The built in Bluetooth feature allows you to wirelessly stream music from your phone, tablet, or computer. With everything you need for a quick and easy setup, upgrading your TV audio to a home theater experience has never been easier.

Expert Reviews

Expert Summarized Score

6.6
6 expert reviews

User Summarized Score

8.6
6,209 user reviews

What experts liked

The Bluetooth connectivity allows you to stream from devices like smartphones and other wireless audio sources
- Sound Maximum
Solid performance for the money. Wireless subwoofer with a great range.
- Audio Rumble
One of our favorite middle-of-the-road options is the VIZIO SB3821-C6. It offers a solid balance of high-end features (like Bluetooth and DTS support) while still maintaining its entry-level simplicity and price tag.
- BestReviews
DTS TruSurround: The sound bar is capable of producing sound in such a manner as to appear to surround the listener courtesy of this feature.
- The Best Soundbars
Rich bass system
- Bone Conduction Headphone

What experts didn't like

Its Bluetooth connectivity has some problems
- Sound Maximum
It doesn’t dig as deep in the lows as we would like.
- Audio Rumble
It is very large, measuring around 38 inches long by 3 wide by 3 inches high. It therefore requires large storage spaces which unfortunately may not always be available.
- The Best Soundbars
It has some issues with the right speaker.
- Bone Conduction Headphone

An Overview On Wireless Soundbars

Wireless soundbars have grown in popularity, as their price makes them more attainable then what you find with full-size home theater systems. Soundbars also come in elegant designs that can be much smaller in size than traditional speakers and can add some style to your entertainment center.

There are a few things you’ll want to consider when shopping for a wireless soundbar. The first is where you plan to place the device. All of them are designed to rest on a tabletop, television stand or computer desk but they can also be mounted to the wall. If you’ve already mounted your television to the wall, you’ll probably want to make sure your new soundbar comes with a wall mount.

Although wireless soundbars are capable of syncing with your Bluetooth technology, you can also find plenty of models that also use a wired connection. If you’re interested in one of these dual models, look for an optical digital audio cable to connect to your television for optimal sound quality.

Determine whether the wireless soundbar you are looking at comes with a remote and what features the remote offers. For example, some remotes are more basic and simply allow you to turn the device on and off without getting up from the couch. Others have buttons to increase and decrease the bass levels, as well as buttons to switch between pre-set equalization modes that optimize the sound for various types of programming.

There are even soundbars with LED screens that allow you to quickly glance at the model’s current settings from across the room.

The Wireless Soundbar Buying Guide

  • Most wireless soundbars come with their own remote control, as many are not compatible with traditional universal remotes.
  • You may be tempted to go with a wireless soundbar that has more wattage than another, but what you really want to pay attention to is the sensitivity of the speakers. This is expressed in decibels. You’ll find many soundbars are sold with decibel ranges between 90-110.
  • Consider the number of speaker channels your wireless soundbar is outfitted with. Most models have two or three channels but some have as many as five or seven channels, which is the equivalent of a traditional home-theater system with up to seven speakers.
  • To keep your wireless soundbar in tip-top shape, make sure you dust it regularly.
  • Some soundbars are still sold with USB ports. You don’t really need this feature for updates anymore, but it is handy if you have a thumb drive full of your favorite music that you’d like to use.
  • Soundbars are sold in active and passive models. The difference is that active soundbars are made with built-in amplifiers to better project the sound. Passive models require a separate receiver or amplifier, so if you go that route, you’ll need to factor the additional purchase into the overall price.