Customer Ratings & Reviews

Sometimes Cheap is Good

Paired with foam rings these little things put off good clean sound

shallow mount speakers

this speaker was everything I wanted and it worked perfect.

Great deal

Got this product free with the purchase of a pair of speakers it helps out a lot looks more professional and sounds cleaner definitely give it a try for your next project.

Don't go without it

This really helps with overall sound quality, especially mid-bass in my experience. NVX offers excellent quality at better prices are than other popular sound deadening brands.

By Anonymous on September 9, 2019 Verified purchase

Very Thick Dynamat

This product is very thick compared to cheap versions. Priced excellent. If you want to reduce any vibration or road sound, choose this!

By Adrian on June 21, 2020 Verified purchase

Very pleased

I am glad I went with this brand. Easy application and works great in keeping my Corolla quiet and audio clean.

NVX SDBSK2 Premium Stealth Black

Thick and heavy. I was suprised with the actual quality. For the price they’re great quality

Good product

Sticky and did hook well to the cars body . Got it for free with my speakers purchase. Sonic electronix for life

600 Watts.

Excellent OEM replacement speakers but 600 Watts max drives me nuts jus rate RMS that’s all we need to know.

By Anonymous on July 25, 2018 Verified purchase

Great value

Got a great price on this item and it also arrived 3 days after order date with standard shipping.

NVX SDBSK2 Premium Stealth Black

For the price, I wish it came with a bit more of the material compared to other packages, but it definitely does what it's supposed to and will make a noticeable difference if you knock on the door/panel where it was placed vs where it wasn't.

By Anonymous on June 12, 2018 Verified purchase

NVX SDBSK2 Premium Stealth Black

Easy to use and reduced vibration, allowing clear sound coming from my door speakers.

Great value

I installed these on each rear door of my 2005 Silverado. Could really hear a difference in sound quality.

Awesone Speakers

These sound great nice tone & sound a lot better than the stock ones. Was referred to get these by a friend. Thanks

By Anonymous on May 24, 2019 Verified purchase

Decent sounding

Good sounding speakers, using a soundstorm ev.200 amp to push them ( great amp). The low profile design is nice, allowed me to mounted them in my custom kick panel. One thing I did find was cold solder on the wires to the tweeter, with me being a electrician I could tell but for the money, I'm not complaining. I've owned some hifoinics subs in the past and they were nice, so I knew I was getting a good quality item.

By Tonster on October 31, 2017 Verified purchase

Hifonics ZS65CXS

Good quality product, sounds great for the price and comes with everything you need to do a proper install

great for the price range

If you need speakers to upgrade your factory system then these are great speakers. They fit perfect in my work truck, have a clear and crisp sound, and for the price they made a great upgrade without going over the top with equipment and cost. By far, not the best on the market but well worth a look to see if they might suit your needs.

By Arthur on May 5, 2018 Verified purchase

NVX SDBSK2 Premium Stealth Black

Great product, Sonic Electronix is great. I've ordered a few things from time to time and have had no problems. I get the item quickly. I ordered this and was so pleased. I ordered another set. Works great.

By Joshua on May 25, 2020 Verified purchase

Great value

Bought this for my Ford explorer and they fit great with mounting brackets to fill 6x8 hole

Great factory replacement

These speakers look really good, have better bass than I expected, and are very thin. They should fit almost any door panel easily. They come with screws, clips, and long wires. The wires are very thin though, so I wouldn't use them to run all the way from the head unit. For the price, there's nothing I can complain about. Consider the thicker 3-way version though; for about $8 more they are probably worth it if you have the space. I've only had mine about a week so I can't say much about durability, but they seems pretty solid.

By Rick on December 17, 2017 Verified purchase

Good deal

Bought a pair of kickers and they came for free, doubted them at first but it really does help in muffling the rattles from the speakers.

Sound deadening

Makes the speakers sound great and looks good to plus doesn’t blind you.

By Christian on April 22, 2020 Verified purchase

NVX SDBSK2 Premium Stealth Black

Perfect fit an very fast shipping.Good list to choose from to fit my car.

GOOD QUALITY AND EASIER ON THE HANDS!!!!

I got this small pack to finish my daughter's 2020 Camry after I had already used the foil-backed version. It went on just as easily and stopped the license plate and gas gap door rattle. A big plus for me was it didn't cut my hands shreds as the foil did.

By Gerald on July 13, 2021 Verified purchase

Good quality sound deadener.

Not enough to cover an entire door but enough to add enough mass to make a difference. Peel and stick.

By Joseph on February 2, 2020 Verified purchase

Nvx sound mat

Added 6.5 jbl gto coaxial to my front doors very easy to use clean surface and stick very easy to cut any time you door speakers add nvx mat you definitely notice the difference in the sound of your speakers it's a must best money I spent if your upgrading your speakers might as well do it right

By Big pat on June 13, 2021 Verified purchase

They sound good but they don't fit.

The product sound good and is also good quality. Sonics says they will fit in my car but they dont.

By Jason on August 12, 2017 Verified purchase

Hifonics ZS65CXS

Love them, they are very loud and the price is great....

Good quality and price!

I recommend these to anyone looking for quality without having to spend a pretty penny, they are packed very well with your spare parts if u need them, shipping was overnight for me and I don’t even know why that came that quick especially since I clicked on free shipping????. Overall they are great the website was very helpful and shipping is trustworthy.!.!

Great upgrade

Good speakers for an upgrade. Great price, great sound, great brand

By Anonymous on November 23, 2018 Verified purchase

Does the Job

Good price, fast shipping, works good. Greatly improved bass while also making the vehicle quieter.

By NICK on December 3, 2022 Verified purchase

nice speakers

did not really fit my truck, despite being advised by the guide they would..but fit well enough to use. sound good, cost little

By Matthew on January 19, 2020 Verified purchase

Nice sounding for mid-range

It's a nice sounding,cheap 6.5" speaker,what else is there more to say? Hifonics are/is a very good company. Love their amps and these mids are the first ever owned. Impressed at the bass and treble on them so far. Getting a soundstream ar14.1800 and will see what they really sound like in a couple days. So far so good,no complaints

By Sheryll on August 18, 2021 Verified purchase

Best stuff on the market

For the price this is the best stuff by far out there A+++++

By serento on July 6, 2025 Verified purchase

Free Free Free

Who does that anymore? Free product great service free shipping that’s why sonic’s electronics is growing and other companies are not.

By KELLY on February 27, 2025 Verified purchase

Works great! Flexible and thick!

Works great seals up all the gaps!

By erik on December 21, 2024 Verified purchase

Nice product

Love that I got it for discount with speaker purchase. Works like a champ!

By Craig on October 18, 2025 Verified purchase

Love this brand!

Paired these up with a set of Hifonics 6x9s to upgrade my factory set-up, and I’ve been more than happy with the results so far. There is a night and day difference from the original speakers and I haven’t even added an amplifier to the speakers yet. I highly reccommend Hifonics products!

By Jay on January 10, 2026 Verified purchase

I used to laugh at this brand. Not anymore!

not any more. I purchased 5 different pairs of 6X9's and these had the bast sound range of all. Ended up keeping these installed. Using the factory radio and will go to max volume without distortion!

By Daniel on October 6, 2025 Verified purchase