VIZIO - SmartCast™ 5.1-Channel Soundbar System with 26.5" Wireless Subwoofer - Black

On Display at Sterling

Enjoy exceptional audio with this 45-inch Vizio 5.1 sound bar, which offers plug-and-play operation. It comes with Vizio SmartCast preinstalled, which lets you cast from most popular applications and use your smartphone to control your television. Pair your Vizio 5.1 sound bar with other SmartCast products for a true multi-room experience.
Save $100
Reg $499.99
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What's Included

  • 4 pcs. Velcro Cable Wrap; Wall Mounts; Aluminum Feet for subwoofer; Quick Start Guide
  • 5' Digital Coaxial Cable (RCA)
  • 5' Digital Optical Cable (Toslink)
  • 5' HDMI Cable
  • 5' Power Cord for Subwoofer
  • 5' RCA to 3.5mm Stereo Mini Jack; 5' 3.5mm to 3.5mm Stereo Mini Jack
  • 8' Power Cord for Sound Bar
  • LCD Display Remote
  • Rear Satellite Speakers
  • Wireless Subwoofer

Ratings & Reviews

Overall Customer Rating:
88% of customers would recommend this product to a friend (364 out of 414)


SmartCast™ 5.1-Channel surround sound soundbar system

Includes a 45" soundbar with left, right and center channels, a wireless slim subwoofer and rear satellite speakers for rich, dynamic audio that places you at the center of the action.

New slim™ wireless subwoofer

Fits conveniently beneath or beside your sofa.

104dB sound output

From the roar of a crowd to the screech of a car chase, experience every detail in amazing clarity as loud as 104 dB with less than 1% Total Harmonic Distortion.

VIZIO SmartCast™ App

Download app to turn your smartphone or tablet into a powerful touchscreen remote.Search and browse content across multiple apps at once.

Control multiple VIZIO SmartCast™ sound bars or speakers from anywhere in your home.

Google Cast™ built-in

Cast your favorite tunes from your phone to your VIZIO SmartCast™ Sound Bar. Simply tap the Cast button from 100 audio apps you already know and love to start playing on your sound bar.

Works with Google Home powered by the Google Assistant

Stream your favorite entertainment using just your voice. Turn up the volume, play your favorite show, or stop the music - all without having to raise a finger.

Connect multiple VIZIO SmartCast™ sound bars or speakers together

To cast the same music to any or every room.


Includes HDMI.

Intuitive LCD remote

Enables simple operation and adjustments from across the room.

Overall customer rating

would recommend to a friend



  • Rating: 4 out of 5 stars

    Excellent, had 1 issue


    This is a great soundbar, it was however a big headache right away. I, like so many could not get the sub to pair with the soundbar. Instead of messing around scratching my head, I called Vizio support. I was on the phone for about 1 hr trying all sorts of things to get this to pair. Finally they said they would send me an all new one (2day shipping). I found out that this soundbar has alot of issues pairing, but the new ones coming out from Vizio warehouse have a new update in them that fixes that issue. I received the whole soundbar system in 2 days, with a return shipping label to send the old unit back. Reinstalled the soundbar, sub and rear speakers, turned on the sub, turned on the soundbar, hit 'pairing' and it instantly paired. --------------------------------------------BREAKDOWN---------------------- Now technical stuff: -I am running VIzio TV M70-d3 tv with this soundbar, using optical for sound. I could not run HDMI ARC because my xbox 1s is using that HDMI ARC port on TV for the HDR content. HDMI ARC TV to HDMI soundbar does sound slightly better than Optical to optical connection. -Once you figure out the remote and how to navigate it, its easy. -I am having a slight issue fixing the voice delay from TV to soundbar, both the TV and soundbar have adjustments that can be made to correct this. -You can listen in Dolby, so make sure to change that on TV remote, sounds very good. -Sub adjustments on remote, make sure to change that, bass, treb., etc. Sound quality: -For the price, this is an excellent soundbar. Mind you, its not theater gold standard, but itll give you plenty of bass and sounds you all need. Mids lack slightly - Rear speakers are not super loud, good for sports games, but for video games I hear mainly the soundbar and sub -Sub, very good and good bass, love that it fits right under the couch, it does not get muffled Install: -Im OCD and cannot stand wires, if you are like me, install may take sometime (about 3hrs if hiding everything). For basic install, a few power cords and optical/AV cords and you are up and running (15-20mins). -For detailed install, mounting brackets are not bad, however if you are not installing into studs, youll need drywall anchors. Remember, do not run power cords through walls, Electrical code violation. I did run my left/right speaker wire through wall. -I did upgrade my Left/right speaker wires to better ones for cleaner transfer of sound -I did upgrade my optical from the basic one they give you, amazon optical is a good cheap cable. -I do have everything running on a surge protector, this prevents any chance of the warranty being voided. (always read fine print of warranty) Overall this is a great soundbar, it is in my back room, approx. 13W'x 40'L with vaulted ceilings, and the sound echos throughout the house. Do your research, again, for the quality and overall experience, this knocks other brands out of the water. And if you do experience pairing issues, call vizio immediately, you have a 1yr warranty on this stuff so if they cant fix it, theyll send you a new one at no charge.

    I would recommend this to a friend

  • Rating: 1 out of 5 stars

    Stay Away From THIS!

    • My Best Buy® Elite MemberElite Member

    I would not purchase this again, for 500 dollars it is far from worth it. I brought it initially for less than 350 new. I Initially had a few issues with it with keeping the wireless sub-woofer and rear speakers paired but was able to follow the online help instructions to trouble shoot it and fix it. These issues started almost within the first few months then progressively got worse and worse, what is even more supprising is that this sound bar is hardly used and despite this has completely failed within a few weeks after my first year of it. Now all i have is a 500 dollar waste of a 3.0 sound bar, the rear speakers are completely useless and do not pair for longer than three seconds. To make it worse since I called in for a replacement 2 weeks after owning it for just a year vizio no longer will support this sound bar, there is no fix once the wireless sound bar does not work, YOU CANNOT REPAIR IT, once borken your stuck paying another 500 dollars for a another one, they will only offer you a slight discount for a new one, which was was hardly a discount if anything 30 dollars off a cheaper model. If your considering on purchasing a model, make sure its hard wired, do not purchase from vizio consider a different brand with better warranty, quality and support. Pros: Comes with lots of cables for set up The concept of a wireless sub sounds nice (This broke within the first three months and is not repairable) Cons: -Smartcast is a joke, your better off buying a 35 dollar chrome cast of 20 dollar chrome audio, all this does is support chromeaudio it will not allow for video streaming -The app is horrible to set up, pairing and connecting to the internet is hard to do and will take 20 minutes to set up -Sound quality is not great, it only has two EQs music and movie. The sub and rear speakers do not sound great compared to other sound bars or just individual speaker set up. -THERE ARE NO REPAIRS AVAILABLE FOR THIS ITEM ONCE BROKEN YOU CANNOT REPLACE IT. -LACK OF CUSTOMER SUPPORT -LIMITED WARRANTY once it has any hardware fail dont expect anything less than having to buy another one at full price

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    Best Sound Since Bose SR1

    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    So I love to have the best audio experience I can afford to have. I had a Bose SR1 Soundbar Sub Combo for years and it served me well. It was great sound no matter where I was due to the calibration headset it came with. I think I got a bit spoiled. I bought a Sony soundbar, sub, and satellite speakers for cost efficiency and was SADLY disappointed and returned it. Worst sound I have heard in a long time. I thought man my ears are ruined due to Bose sounding so great. Well after some extensive research, I decided to buy this Vizio 4551 Soundbar satellite combo and FINALLY!!! After hooking it up and calibrating some of the sounds which can be done once pairing your Soundbar to you phone, I have to say that this Soundbar in my opinion is way better than the Bose Soundbar I had prior. And maybe that’s due to it being years older and out of date but instead of paying $1700+ for the new Bose Soundbar, sub, and satellite speakers I paid $399(it was on sale for holidays) and not a dime wasted for this purchase. Not only is it easy to set up and calibrate, the sound is AMAZING!! Clear as day voice, wonderful bass and with the rear satellites, full 5.1 surround!! Movies and tv shows sound absolutely amazing and I have to turn it down sometimes because it’s too loud. The bass shakes the whole living room when turned up and that’s on setting 7 and it goes to 12. You can turn the center speaker up for even clearer and louder voices and as a huge plus, you can cast your music right to the Soundbar via compatible cell phone for great music playability. If you decide to get more than one, I’m pretty sure they connect to be able to provide sound throughout the home. And with today’s smart home features, it makes it ten times as easy to make that happen. Also I’m a huge gamer and I have a Sony 930E 65” 4K HDR tv and not only do I have the best in graphical power, now I have the best in sound to go with it. Call of duty gamers rejoice as you no longer need that headset to hear enemies sneaking up from the rear. Playing VR, no problem, the Soundbar provides full surround sound for total immersion. Best purchase I have made in a long time as far as sound goes. I’m by no means rich, and if you have a champagne appetite on a beer income, this is the last review you need to look up before deciding your purchase. Bottom line, GREAT QUALITY SOUND ON A BUDGET THAY RIVALS MOST OTHERS THAY COST TRIPLE OR EVEN QUADRUPLE. Thanks for reading my huge rant but this product deserves a great review for the quality you get for the price you pay.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great purchase

    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    I was in the market to upgrade my soundbar for my wall mounted flat screen. I purchased this Vizio product because of the great deal Best Buy was offering. I was looking for great sound but also for the ability to stream audio from my iPad to the system. First impressions out of the box were that the soundbar was substantially smaller than the unit I had purchased about four years ago. I was a little concerned when hanging the bar on the wall that it couldn't possibly produce good quality sound based on the height and depth of the bar (3" x 3"). The subwoofer was designed to fit under a couch, which was another thing that drew me to the product. Once installed, I fired up the sound and I have to say that I was completely wrong about how much sound the bar would be able to produce. It easily can produce sound louder than I care to hear. It has a handy remote to use, and my existing Harmony remote was easily set up to use the VIZIO system. A couple of things that I really like about this system. It has the SmartCast / Google Cast capability which allows me to set it up to stream from a variety of apps, and even after closing the app, the system continues to stream the music through its wireless internet connection without my phone or tablet. It also has a bluetooth input which allows me to stream music from the apps that do not work with Google Cast like Apple Music and Amazon Music. This has been great. Especially great to just stream a GooglePlay channel like "Relaxing at Home" and let the system fill the downstairs with nice relaxing music. My second favorite feature is that the we have a young daughter that goes to bed early at night. The remote has a "night" setting that automatically adjusts the subwoofer down while still maintaining very good quality sound. This is fantastic because I was always getting up and adjusting the knob of my old subwoofer at night when my daughter would wake up and tell me the TV was too loud. If I had one negative, it would be that I could not find any documentation on the rear channel speakers when I was shopping. I could not find anything saying how they hooked up to the system and I wrongly assumed that they must have been wireless like the subwoofer. The rear channel speakers actually are wired and they plug into the subwoofer. This isn't too bad, particularly if you happened to want the rear channel speakers located near by your couch with the subwoofer under the couch. Overall, I'm very pleased with this system and after using the SmartCast and Google Cast apps, I'm seriously looking into purchasing one of the Vizio SmartCast speakers to use in parts of the house where I can't hear the soundbar. I have never owned anything from VIZIO, so I wasn't sure what to expect with this system. I'd purchased and returned systems from Samsung and LG in the past, and I've owned a BOSE system for many years. Happy to say that this VIZIO system has exceeded my expectations.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Best in price

    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I purchased three sound bars and tried them side by side at home . First was the Samsung WH-K550 overall great sounding 5.1 with the added wireless speakers everything synced with no issues. Great sounding overall.Great remote better than the Vizio and JBL. The one draw back was the lack of low-end that the sub put out .When playing music it was decent but with movies I needed more lowend even with the sub at max level. Next was the JBL SB-450 first impressions amazing low-end and that this sub woofer can put out! . Literally shook pictures on the walls. Best sub of the three sound bars I tried. It has an adjustable crossover on the subwoofer which is an awesome feature . Sound bar sounded great! when the surround feature turned on it did a great job of giving the impression of having rear speakers. Crisp highs also . The remote was horrible very small and no indication of where the bass levels where at or volume I like to have some indication as a reference point and also you can't add wireless rear speakers :( . Overall i had a hard time deciding I was going back and forth between the Vizio and the JBL and both sounded very similar . The Vizio was the winner for a few reasons. One having rear speakers , better remote and sound options, and Vizio smart app which makes it easy to change settings and see where your settings are at. Paring the sub at first was a pain and I had to update the sound bar through the smart app. I think people have issues and bad reviews with the unit dropping connection/paring because it needs to be updated through the app. The current update takes care of syncing issues etc. The subwoofer of the Vizio is great very loud plenty of low-end almost as much as the JBL . Overall it's the best option for around $400 out there period . The JBL is no joke and sounds killer I spent two days with both and they sound very similar but the Vizio offered a tad more in options. If JBL came out with wireless rear speakers and fix that horrible small remote and add some type of indication of level adjustments like lights on the sound bar like Vizio I would take the JBL in a heart beat.. I tried the Klipsch R-20 also which had the best sounding soundbar more mids and overall sound quality but once again the subwoofer was lackluster! For $500. You can't go wrong With the Vizio or JBL 450 try them both..

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    From Bose To VIZIO!!

    • My Best Buy® MemberMember

    I just have to say that starting this review, I came from having a Bose SR1 system. That system was amazing and I believe spoiled my taste in sound. Before I returned it and got this I tried the Samsung soundbar and sub with rear speakers model 5110 I believe and it was the worst sounding system I have ever had. I thought it was because of the Bose that my ears were ruined. I returned it to get my current Vizio SB4551 model got it home and it was missing a satellite speaker cable, no worries though because any RCA to RCA will work and Vizio has me one on the way now shipped fast for the inconvenience. I hooked everything up and WOW!!! What a system. I have it hooked up through HDMI ARC on my Sony 65” 930E 4K tv and have the system connected to WiFi so I can control it from the app and cast music onto it. This system just absolutely rocks and like a prior review, I haven’t been able to turn it all the way up due to it just being that freakin loud. The bass was non existent in the Samsung and no control over sub at all. The Vizio comes with an LCD screen remote and makes it pretty easy to figure out how to change settings. If you want it even easier then download the app and control it from your phone for instant changes to the system you can hear and set accordingly. The sub and bass will need to be nadjusted because on the highest setting it is shaking my walls and windows. Feels just like a small movie theater in the house!! It’s the closest thing to hearing a Bose system without breaking the bank and does a great job of producing wonderful sound. If you want to make it look clean you will have to hide the power cords and satellite speaker cables but it is 100% worth it. Haven’t heard the newest Bose 300 series soundbar and sub but I’ll tell you what, I’m not at all sad with this purchase one bit. Highly recommended product for those who want to hear theater sound in a small package. Oh and you can change the center speaker to hear voices crystal clear too, and when everyone goes to bed, hit night mode and the system shuts off the loud bass and just outputs nice clear sound without keeping the household awake.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Clearing confusion with 4k output

    • My Best Buy® Elite Plus MemberElite Plus Member

    For the confusion regarding outputting 4k, Does it have 4K passthrough? - No Will you be able to play 4K HDR content? - Yes Short answer for it is ARC The way I have it hooked up to my Samsung 60 KS8000 is- - All hdmi devices(Roku 4 HDR, PS4 Pro, Xfinity X1) are connected directly to my TV(via the samsung one connect box) - The soundbar is connected to the TV via the HDMI ARC port. The devices output 4k content directly to the TV. With CEC enabled, the tv returns the sound to the soundbar via ARC(no delay in gaming at all). I like this setup better than passthrough as there wouldn't be as many ports available on the soundbar. I can control the soundbar volume from any of the device remotes. Vizio remote is still needed for individual speaker settings. Since my tv has only a single oneConnect cable, I don't have to worry about multiple hdmi cables sticking out of the tv. As for the soundbar, all in all, it does a great job. Great thing about it is the smaller size in thickness of the soundbar as well as the rear speakers, when compared to that of the older 38/40 series. Flat subwoofer is not as filling as the cube one would have been(tested friend's older model). Keeping it flat down would cause the whole floor/couch to shake even on lower subwoofer settings. Keeping it standing gives better overall control of bass levels as well as more room filling bass.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    The price is right!

    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite Plus MemberElite Plus Member

    Recently picked up the new Vizio Smart Cast 5.1 Sound bar to pair with the new Vizio M-series 70". I must say for the price this sound bar is fantastic. User friendly, plug and play. The sub-woofer was much bigger than i was expecting, but that's probably a good thing, as it puts out some serious lows. My couch sits too low, so i had to stand it up on the side of the couch, for my living room setup that was a non-issue. I haven't been able to turn the volume up all the way because it is simply just too loud. The sound that the speakers put out is amazing, super crisp and clear, with deep lows. Smart Cast is great, i can push whatever i am watching or listening to, to either just the sound bar or the TV (If you are listening to say Spotify, you don't need it to be on the TV). I must say for the price of this setup, I am pleased with the quality of the sound output. These speakers have transformed a normal living room into what feels like we are watching TV in a movie cinema. Mounting the sound bar on the wall under the TV looks great, and very simple to do. Great work Vizio! I will upload some pictures if i can figure that out.

    I would recommend this to a friend

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