Product Comparison: VIZIO SB4551-D5 vs VIZIO SB4051-D5

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VIZIO SB4551-D5 45” 5.1 Slim Sound Bar System

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VIZIO SB4051-D5 Smartcast 40” 5.1 Slim Sound Bar System

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General Specifications

Brand

VIZIO

Model

SB4551-D5

SB4051-D5

Origin

China

About the Product

Introducing the all-new VIZIO Smart Cast 45” 5.1 Sound Bar System. The included wireless subwoofer and rear satellite speakers deliver fully immersive 5.1 true surround sound at levels up to 104 dB2. Our new slim wireless subwoofer fits conveniently beneath or beside your sofa.

Introducing the all new VIZIO Smart Cast 40? 5.1 Sound Bar System. The included wireless subwoofer and rear satellite speakers deliver fully immersive 5.1 true surround sound at levels up to 101 dB1. Our new slim wireless subwoofer fits conveniently beneath or beside your sofa.

Key Specs

Minimum Frequency Response

30 Hz

150 Hz

Maximum Frequency Response

20 kHz

Minimum Frequency Response
Maximum Frequency Response

What customers say about "Key Specs"

VIZIO SB4551-D5 45” 5.1 Slim Sound Bar System

Great product! Fills the entire room with sound and makes movies come to life.
The sound quality of build of the soundbar, woofers, and satellite speakers is great.
Sounds as good as any full system I have had in the past, and I have had quite a few.
There's a small (but annoying and noticeable) lag between the soundbar and the sub, so the beats can sound like a gallop.
- There are no mids-- the bar itself is bright and the sub bass is powerful, but there's nothing in between.

VIZIO SB4051-D5 Smartcast 40” 5.1 Slim Sound Bar System

The sub woofer is impressive for a 6" unit and produces good bass both at the low frequencies and up to the mid range level.
Absolutely amazing surround sound system!!! Very easy to set up, and phenomenal sound!
Sounds amazing and easy to control. Haven't had disconnect issues, audio lag, or even popping.
I listen to metal music so you can feel the double bass from the drums, guitars are clear, everything sounds good.
You'll be disappointed by the sound profile and frequency response (I noticed that some very low notes in certain songs could not be reproduced).

Size & Weight

Color

Black

Height

2.01 in.

2 in.

Width

45 in.

40 in.

Depth

2.01 in.

2 in.

Weight

3.64 lbs.

3.42 lbs.

What customers say about "Size & Weight"

VIZIO SB4551-D5 45” 5.1 Slim Sound Bar System

I absolutely love the slim sub that fits under the sofa, plus it came with all cables in the box.
The subwoofer on this system is amazing! Deep bass, really deep. Moves a lot of air for a unit this compact.
The sound is pretty big for something so compact and relatively cheap. The sub shakes things up nicely.
The sound bar is compact and easy to mount or place on the entertainment cabinet below your TV.
Super clean look. surround speakers look tiny but trust me they sound decent for the size.

VIZIO SB4051-D5 Smartcast 40” 5.1 Slim Sound Bar System

Its strong point is the slim wireless sub-woofer that can be hidden under the couch or stood up-right with the included stand.
Pretty nice thump from such a compact subwoofer. Fits under the couch with no problem.
The subwoofer is excellent and the bass unit fits nicely under the couch without compromising sound quality.
The sound bar is much smaller than I expected, but has great sound! The rear surround speakers are awesome!
I love this sound bar system. The slim sub-woofer sits discreetly alongside our reclining love-seat.

Features

Type

Tabletop

Installation Type

Stand-alone, Wall-mount

Number of Channels

5.1

Sound Enhancing System

Dolby Digital, DTS Studio Sound, DTS TruSurround, DTS TruVolume

Extras

Slim profile subwoofer, Google Cast, DTS audio technologies, Dolby audio technologies

Slim profile subwoofer, DTS audio technologies, Dolby audio technologies, Google Cast

What customers say about "Features"

VIZIO SB4551-D5 45” 5.1 Slim Sound Bar System

It literally only took 5 minutes to setup and I even used one of the spare cables for another speaker we have. Very happy with this purchase.
I simply use my iPad to cast music to these speakers. I used the smartcast app to manage speaker settings.
Great sound! Very sleek and minimal. Once you tweak the EQ and app settings, it really starts to shine.
The remote SUCKS. You can't read it and therefore can't use it, without bright light.
The volume from the front sound bar is great, but voices sometimes get a little washed out unless the volume is extremely high. Equalizer adjustments don't remedy the issue.

VIZIO SB4051-D5 Smartcast 40” 5.1 Slim Sound Bar System

This sound system is convenient to setup and for most, will be more than adequate.
The App is very good and allows fine tuning of the sound to suit your taste.
I have the subwoofer under my couch, against my wall, and it shakes the entire room on good 5.1 supported movies!
All the components feel VERY high quality, with heavy aluminum end caps on all the speakers and subwoofer, and high quality metal mesh grills.
This is an AMAZING system, very balanced with a ton of features with the connected app!

Setting

App-Controlled

Yes

Equalizer Settings

Night mode, Bass/Tremble control

Surround sound control, Bass/Tremble control, Surround balance, Night mode, AV Delay

App-Controlled

Connectivity

Wireless Connectivity

Blueetoth, Wi-Fi

Interfaces

3.5mm stereo mini jack, RCA (Coaxial / SPDIF), Optical (Toslink), USB (for .WAV Audio Playback), HDMI, RJ45 jack, HDMI ARC

3.5mm stereo mini jack, RCA (Coaxial / SPDIF), Optical (Toslink), USB (for .WAV Audio Playback), HDMI Input, RJ45 jack, HDMI ARC

What customers say about "Connectivity"

VIZIO SB4551-D5 45” 5.1 Slim Sound Bar System

The included cables are a nice touch, giving you literally everything you need to get a standard TV/console/sound system hooked up.
Took me maybe 5 minutes to set up, with half of that installing the app on my phone and pairing the Bluetooth.
We love it! Music and movies sound so good coming through these! We love that we can connect our phones to the sound bar through Bluetooth and play music that way too.
Finally, and the most important, DO NOT use this as a receiver to a 4K TV. i.e. I plugged my PS4 Pro HDMI into the soundbar, and the bar into my 4K TV. The sound bar does not enable pass through 4K.
The bluetooth doesn't work after the initial setup. We had to install an auxiliary bluetooth receiver in a different input as a workaround.

VIZIO SB4051-D5 Smartcast 40” 5.1 Slim Sound Bar System

The soundbar receives the audio input and has a wireless connection to the sub. The sub-woofer has its own power cord and connects to the two rear satellite speakers.
The system connects to your WiFi system so firmware updates as well as access to other electronic devices is possible.
Bluetooth connection is easy and trouble free. I bought a refurbished unit which showed no damage and worked perfectly out of the box.
The sub-woofer is clear and does not distort, and the modern WiFi casting and HDMI ARC features are a sure improvement.
It sounds great, but (according to VIZIO tech support) it has an issue with the Bluetooth connection between the sound bar and the subwoofer.

Warranty / Certifications

Manufacturer Warranty

1 year(s)

Certifications