Customer Ratings & Reviews

OK wire if you like red wire

I received this wire because when I bought my Image Dynamics speakers from Sonic the description said it included speaker wire in the box, but when I received them there was none. I called Sonic and they sent this wire to make up for the error. I later called Image Dynamics and found out that they no longer include speaker wire with their speakers so Sonic if you are reading this you can update your description and pictures on the ID speakers to NOT show speaker wire. For the record I bought the Image Dynamics CTX65cs and the CTX4 speaker sets. Great speakers by the way. Thanks Sonic for all your great products and sound advice, no pun intended:)

nice sound

very good product at a pretty good price lowest i could find on net and sounds good

Amazing Value!!!

This enclosure was totally worth every cent! Visually impressive-though it takes up a little more space than my old one, completely worth it. Pours out incredible clean bass that I can feel in my soul w/ dual 10" Kicker Comp-Rs'. Make the upgrade like I did! You won't regret it!

great subwoofer

This sub box makes my subwoofer s sound better than they should of had.

Use to purchase this all the time

Belva brand is good affordable material when starting out but through out time cca corrodes if you have the money buy ofc cable

Good extra fine wire

This is excellent speaker wire. One wire has round insulation while the other has square insulation making it easy to identify hot and grounds. My only installation problem was I didn't order enough. I needed a quantity of 2 just to wire a single cab pickup.

Does what it should

This sub-woofer box really does what it should. With a pair of good drivers you can get great deep bass sound out of it. The finish is pretty good as well with a lacquer finished face plate.

Perfect fit and lots of style

This enclosure is was chosen to house a pair of Rockford Fosgate R-2 10's and was a perfect fit. The sound quality was top notch with its separately tuned chambers that were pre- poly filled. The glossy beauty baffle with the chrome studs holding it on is a perfect touch of classy style that is as pleasing to the eyes as it is on the ears. Super fast shipping and fact that it was purchased from Sonic Electronix make it super easy for me to recommend this product to anyone looking for a great sounding and great looking pre-fab enclosure.

By charles on March 24, 2020 Verified purchase

Good wire

This wire is great speaker wire. I like the way it looks and works great.

Awesome roller!

I'm really happy that I bought this roller. I also have two other (smooth) rollers, but this one works much better. Its little "fingers" press the NVX sound mat really well and it allows it to be spread evenly over the entire surface including all these different curves and corners. The roller is very sturdy too. After 30 sq. ft. the roller started squeaking a little, but it still keeps working perfectly! I'm sure that the roller will help me to put all 60 sq ft of the sound mat and still will be fine. Great roller!! This item is highly recommended and even "a-tool-you-must-have!" for anyone who works with sound isolation of vehicles!

By L. the Morning Star on October 1, 2022 Verified purchase

Way better than version 1.

I am an installer and could not disagree more with the other review. I actually had version 1 and got it the first time I ordered a bulk pack with Sonic years ago. This version is a big improvement due to the teeth and the handle. The teeth make it way easier to get a great stick to the vehicle body. The older one was wooden handle and this one is plastic, but the plastic is rugged and it is singular piece so it is really sturdy. The older one that connected the handle to the roller part broke at the joint and this one reminds me of a sturdy broom I have from Home Depot. Worth every penny paid or free!

Excellent value

The speaker wire is a good price for the length and gauge.

Awesome!

Great for the price Fits perfectly. Exact size in description

Belva Sub Box

Good quality and durable product. Was very easy to set up and fits perfect in my car.

All plastic

This tool should be free with purchase. All plastic. It does feel strong and it does work but not worth the money.

By Donnie on June 8, 2021 Verified purchase

perfect box for the price

I bought this box especially for the NVX V-series 10" that i order earlier from Sonic Electronic. My old box was a small seal box and it didn't sound like i wanted too.. So i decide i should try out a ported box.... After looking around Ebay, my local pawn shop and crutchfield, i could not fine what i was looking for and the one i wanted was over price. Thanks to Sonic Electronic i found the right box and price for my sub..The bass are louder then my seal box i had before. Thank You.

By xiong on August 18, 2017 Verified purchase

Well worth the $$$

Holes are a little big but nice sound is produced by this box.

By Budha67 on June 21, 2016 Verified purchase

Great

This item is everything I was looking for we'll build

By carl on June 5, 2017 Verified purchase

Perfect for tight spots

I used this to install true 50 mil sound deadening in the doors and along the floor of my f150. I installed it with this and the more traditional roller. This is perfect for inside the doors where bracing and cutouts don’t allow you to get great pressure on the material, the textured nubs give you much more focused pressure and allow you to get to stick and leave a small bit for air to escape when using a heat gun and following back up with the smooth rubber roller.

It also takes down kind of like a disposable razor giving you better access in some cases.

I used a cheap sound deadener from an online retailers house brand, the butyl rubber was not very tack and this got it to stay no problems I forgot to follow with the heat gun inside the door skins and this still kept everything secure.

By Frank R. on July 7, 2023 Verified purchase

Great handy product easy does it .

Great product , easy and handy to use , the roller is well crafted and helps out a lot . Well recommend happy with my purchase . The only concern I had was that I ordered it during the week before checkout it said I would be receiving my purchase on sat it took more than a week to receive it . Other than the shipping miscue I will purchase from sonic electronix .

By Jose on June 28, 2023 Verified purchase

Belva BBX210BK (BLACK)

Very nice built box looks great would recommend to anyone who needs a box for a good price.

By Anonymous on June 1, 2019 Verified purchase

Bang for Buck

Its pretty good sound deadener and it includes enough to do your doors. My door went from sounding hollow to solid. It definitely made a difference in the sound quality.

By kumar on December 14, 2022 Verified purchase

Wonderful

I used this in my doors and trunk. I tried other sound deadening products from Amazon that were trash compared to NVX. Easy to cut, easy to place, stays in place, and is thicker than the competition.

By Roger on January 25, 2021 Verified purchase

Pliable and sticky even in cooler condittions

I like it! it was in the closet and I took it to the garage it was 45º this stuff still conformed to the curves and stuck like crazy even in the cold!
Love the color I was using another brand (silver) and where the seat doesn't cover its highly visible black makes it blend in with my black truck.
looks nice and deadens like it should!

By TOYZ on January 13, 2021 Verified purchase

Works ok but handle is tiny must be made for tiny people. Plan on strapping on a bugger handle.

By steve on December 1, 2023 Verified purchase

Awesome buy!!!

Well put together overall I was very happy with this and will be buying my future products here

By Anonymous on June 4, 2019 Verified purchase

Ported Box

This box is just what i needed , made my subs come alive . Had another ported box but not enough air space . This box really made my subs hit so much better.

By Anonymous on November 4, 2018 Verified purchase

Awesome

BOX is amazing. Sound quality great. A must for everyone.

By Anonymous on August 17, 2019 Verified purchase

All that and more.

This box is a perfect fit not to big not to small. Toned to i think 30hz. The look is clean and well made. The price unbeatable. For anyone looking to add 10s this is a no brainer. Get one before everyone else does. 5*s all day.

By Anonymous on August 20, 2018 Verified purchase

Good value.better than name brands.

I bought this after using the chrome version of this. I liked that it was black and had a “better look” than the chrome one. Even do it says it’s the same thickness as the chrome one it feels thinner but the same thickness as the stinger roadkill. I did find that it was easier to work with than the other nvx version and stinger. It is still a good value and has hold up since 2017 in the Northern California weather. If I had too choose between the nvx chrome one and this black version I would go for this one if looks was a concern other wise the chrome version is a better value.

By Alex on November 1, 2023 Verified purchase

Great product!!

Nice design great quality and excellent performance will buy again highly recommend it. and affordable price

Good subwoofer box for the money.

I had a pair of 10-inch Polk MOMOs that I wanted to use and so I bought this product. The box was very well made and felt solid. I'm am pretty thankful this box came with polyfill. 2 issues I had with this box was I had to solder wire to the terminals and the cut out hole didn't really match my subs. I tried for an hour to align the subs with the edge of the hole but I could only manage to do 4 screws per sub. The other 4, the screws would rub against the hole. Even with the screws gone, the box performs well and the notes hit hard.

By Mike on April 15, 2023 Verified purchase

Really Need to Change the Specs

The box is 30.5x14x14 which equals 5978. Divide that by 1728 to get cubic ft. and you get 3.46cu’ft, after you estimate port displacement you would subtract roughly .6 to get your total cubic ft of the enclosures which is roughly 2.86cu’ft. If you wanna get the cubic feet per enclosure you divide that by 2 and get 1.43cu’ft. Seems to me like they found the total cubic feet of one chamber and accidentally divided it by 2 thinking it was the total volume of both chambers. Looks like a good box though and I plan on getting one as long as I’m right lol. If not .71cu’ft is wayy too small for any 10 haha.

Must have

It’s a must have if sound deadening your vehicle I have the smooth nvx roller and this one as well they both have there place in the sound deadening installation process I recommend you get both you won’t regret it

By Wesley on April 3, 2024 Verified purchase

It’s AWESOME!

It works so well with dual 10 kicker comps shakes everything in the car. Highly recommend this box.

By Brendon on January 27, 2023 Verified purchase

Good quality speaker wire

Received with my order. Very good quality speaker wire

By Josh on October 7, 2024 Verified purchase

Nvx one of best brands in the market ????

By Gerardo on August 8, 2024 Verified purchase

Great

Much better then the smooth roll

By serento on March 29, 2025 Verified purchase

awsome

sonic did it again . we love them

By roy coffey jr on August 4, 2024 Verified purchase

Perfect addition to tool box.

This little tool helps install sound deadener easier than the flat roller. I still use both depending on the application.

By Mr. A on February 4, 2026 Verified purchase