Vizio sb3821-c6 Soundbar Review

Vizio SB3821-C6

Vizio sb3821-c6 soundbar is designed with the best sound technology to deliver high-quality sound.

You can agree with me that;

We now barely hear the dialogues or sound that comes from our flat-screen TVs.

Especially when you have a large room and you are sitting cozily at a distance!

On top of this;

 Acquiring a full-home theater system now requires us to dig deeper into our pockets to secure that surround sound experience.

Luckily for us, there is a manufacturer that listens and understands the need for a budget-friendly sound system that is affordable and gets the job done.

This company has managed to provide affordable soundbars that give a crisp and impactful sound that is much more reserved for more expensive speakers.

And that’s not all;

You get an amazing soundbar and then you combine it with a wireless subwoofer, it takes your audio experience to the next level. 

This a review of a soundbar that has been voted the top-selling soundbar on Amazon and is made from a company that has made itself popular by providing great value at a low price point.

Vizio sb3821-c6 Soundbar – Sleek and Practical

This is an affordable soundbar that comes with a wireless subwoofer, offers you expansive sound quality, wireless Bluetooth streaming, and other great features.

You can now enjoy watching your favorite movies in a better way compared to the sound that comes out of your flat-screen TV, a definite bang for your buck..


  • Affordable
  • Excellent quality Sound
  • Dolby and DTS Technology
  • Easy to Setup and Use
  • Bluetooth Streaming
  • Wireless subwoofer
  • Solid Wood Construction


  • Low Bass response
Vizio SB3821-C6

Vizio sb3821-c6 review

Key features 

One of the best features and a great selling point for the Vizio sb-3821-c6 soundbar is that it comes with a wireless subwoofer added. This is something that you will majorly get in more expensive models, so it is a bonus. 

This subwoofer manages to make the sound quality even more impressive and you get a sound performance with an added punch to the bass down to 50 HZ. This soundbar will improve the quality of how you watch movies and listen to your favorite music. 

And that is not all, this subwoofer is wireless meaning that you now don’t need to hustle around with cables anymore which giving you a neater environment. You have the freedom to place it anywhere you like in the house and enjoy high-quality sound.

The other good feature to look forward to is the Bluetooth connectivity which will allow you to stream your favorite music from compatible smart devices when you are not watching TV. You can now roam around the house freely as do your chores and get entertained at the same time. 

Another surprise and the good feature is the Dolby Digital and DTS support. We say surprise because this is a feature that is provided by very few manufactures in the budget soundbar segment and is mostly with high-end systems; talk about value for your money. 

The Dolby is an audio standard for cinema, Blu-ray, broadcast, DVD and content streaming. Thanks to this feature now the dialogues in your movies will be clean and clear and you will be able to hear all the voices of the characters even when they are whispering.

With the Vizio sb-3821-c6 soundbar, you can turn your TV into a home theater with a greater audio definition.

It also comes with another high-tech aesthetic which is the DTS TruVolume which can provide a consistent volume level for all your audio devices giving you the fullest listening experience without needing to always adjust the volume.

With all these great features we have mentioned we have to say that literally, no budget soundbar can beat this so far.

What comes in the box and setup  

Apart from the Bluetooth connection, the Vizio soundbar comes with a USB port, a set of digital and analog inputs; stereo RCA, 3.5 mm stereo as well as coax RCA and a Toslink optical input. There is also a 3.55 socket and an HDMI connection.

 It also comes with composite cable, a power cable, a quick start guide and two alkaline batteries for the remote.

In the package you will also get a lightweight simple remote control that allows you to control the important functions; EQ, Bluetooth, volume and power and those controls appear on top of the soundbar which comes in handy if you happen to lose the remote. There also manual controls located at the back of the soundbar. 

The setup of the soundbar is easy all you need to do is connect the soundbar to power and use the coaxial cable or the optical cable to connect to the audio source, set the EQ and input source and you are ready to go.

 You also have multiple mounting options, if you choose you can mount it on the wall, place it on a tabletop or just can place it on the floor.

Build and Design 

While other soundbars manufactures are going for a more eye-catching futuristic looks and fancy designs, the Vizio soundbar sticks with the good old cuboid shape, which is clean and practical. The design is neat and simple with black grilles and panels.

The side panels have a smooth brushed aluminum texture for a finishing that differentiates bottom, top, and sides.

The sleek but simple design that maintains a low profile works because it makes it easy for the soundbar to blend in any type of environment and still look good no matter where you mount it. 

The soundbar measures 38 by 3 by 3 inches and weighs 6 pounds and it’s made from solid wood which makes the build quality feel stable, durable and expensive despite it being a budget model.


When it comes to the audio performance, the 100dB output expansive sound is loud and can fill up an average-sized room with crisp, clean and clear sound. What is even more impressive is that the sound has less than 1% harmonic distortion even at its loudest volumes. 

The soundbar comes with two 2.75 inch drivers to handle the high range frequencies and 5- inch wireless subwoofer providing the lower ranges. The audio quality is incredible and it projects quite well.

 The subwoofer provides that deep bass that you need when you are watching movies and because of the Dolby systems, there is surround sound making them sound loud and warm. The subwoofer can be able to do a frequency of 50Hz.

Since this is a budget soundbar, don’t expect to find deep bass and top-notch highs and lows. It, however, does offer crisp, bell-like high end strong and strong mid response.

 The range for connectivity for the wireless subwoofer is about 30 feet and at sight to the soundbar. The best option is to place the subwoofer close to the soundbar to avoid any form of disconnect between the soundbar and the subwoofer. Regardless of all this, the range of the subwoofer is impressive no matter how far it is from the soundbar.

What we like 

  • Simple sleek and convenient design that is more compact than the traditional speakers, yet attractive plus you get multiple placement positions.
  • It comes with a 5-inch wireless subwoofer with a good wireless range that mostly comes with the high-end systems.
  • The availability of Bluetooth connectivity enables you to connect to other smart devices for wireless music streaming.
  • Excellent sound quality with the included Dolby and DTS technology which is way better than your current flat-screen TV speakers.
  • The dialogues when watching TV are clear and the bass unit rumbles are good. 
  • The synchronization to the direct TV remote is also another plus and when you turn on your TV the optical cable sends a signal to the soundbar and it automatically turns on the unit.
  • The setup is simple and easy; as simple as running the optical cable and power and that’s it.
  • The packaging is also amazing and you get all the instructions you require and enough cables to connect and mount. (There is no need to buy a separate cable because there is an optical cable included)
  • What the soundbar offers and its low price point is an incredibly solid performance which is a bang for your buck. 

What we don’t like 

  • One is that the bass is okay but is not what you would expect; it will not sound like the 5.1 and 7.1 systems.
  • The wireless subwoofer range is short 
  • The light setup on the side of the soundbar to detect input is a pain to use 
  • The soundbar also tends to crackle from certain frequencies sometimes and so it not the perfect choice for listening to music but the crackling does stop when you switch it off and then on.

But all these are flaws and not a deal-breaker, at this price range and the company’s reputation and comparing it to its competitors, this is a worthwhile soundbar. Overall this soundbar is a great improvement from TV speakers, there is no doubt about that!


Overall, Vizio sb3821-c6 is a great soundbar at the given price point and It provides you with impressive quality sound. You can now enjoy your favorite movies with clear audio and roaming around freely while you listen to streaming music from your smart devices.

 It comes in a sleek and simple design that can blend in anywhere, easy setup and flexibility in placement options; you can place it on the floor, tabletop or wall mount it.

 The cabinet is made out of solid wood and you also get wireless connections. The Dolby and DT support also to improve the surround sound experience overall. 

This is an upgrade to the sound output of any flat-screen TV. You also get a wireless subwoofer included which most manufactures don’t include.

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