Customer Ratings & Reviews

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

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.

good sound

i installed this set in my jeep with matching 6x9s and my friends ask if i have a sub and how the sound dose not git muddy at high levels I have them hooked to a 4ch 800 amp and they take it all

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 product

I used these speakers in custom kick panels for my Chevy TB and they were a perfect choice. the sound quality is awesome. I have them ran off a 4 channel Alpine amp right now and they handle the power like a champ

Treble is too much

I bought this as a direct OEM replacement for my car. Easy fitment and good Rockford quality. Initially, I was really impressed, but the speakers have become very "bright" in that the treble has become more and more dominant with a pronounced tinny sound - not what I expected. My local Rockford agent says its normal (really?) being Power range speakers and at the price, I expected the tonal profile to have remained the same. Overall, a disappointment!

Speaker

Really good speakers, sound great. Take a lot of punishment daily and are playing better then ever. Its like they break in day by day. Highly recommend these speakers to anyone looking for clarity and bass.

You can do anything with a little imagination...

Years ago learning how to work with wood, I built a couple of speaker enclosures, and put in a pair of cheap car speakers which I hooked up to my 8 track tape player. Not bad for a beginner with no money. Spin forward 25 years, I found these boxes and decided to upgrade my computer sound system with them which didn't sound much better than my old 8 track. I bought a Lepai mini amp and paired these Fosgates to it and, wow, what a difference. You can rock and roll all day long with these speakers making crystal clear sound. Fosgate makes the best car speakers and once you buy a pair, you'll know why. They are very well made. The guy who complained about distortion when driven just doesn't understand you need power to drive these speakers properly. To do that, I also would recommend the Fosgate Power Amp (Punch) and the T1693 speakers that really kick butt. Your basic OEM car radio has no guts. I have never met a Fosgate speaker I didn't like and they are the only speakers I buy anymore.

great!

I bought 2 for the rear and they are really nice speakers. Have a lil bass to it too but not too much but very nice and mellow sound.

good value

Good sound and performance. Good price. Recommended. Fit my Jeep sound bar with ease

Great Buy

Great speakers for my boat. Very clear and sound great.

These Are Great!

I put 1 of them in a .38 net FT^3 box with 12.92 square inches of port per ft^3 tuned to 71.37Hz and the SQ is unmatched by a lot of more pricier speakers.

I would recommend Rockford Power Series to anyone, budget or not.

Best 5.25's

I got these speakers a few months back and had them hooked up a bit before I put them in my car and these things are so clear and loud its ridiculous. I've pumped 50 watts RMS into each speaker and they sound as loud as a concert but never swapped loudness for clearness. For sure going to recommend these speakers to my friends!

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

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

Great sound and value

I've had alpine type r and infinity kappa, neither of the two come close to the sound quality I'm getting from these speakers! I'll never buy a different brand ever again. I even swapped out the kappas I had in the front for rockfords and they all sound amazing!

Great Product

I just put these speakers in my jeep, and let me tell you they are awesome! They sound better and can be louder than my sony xplod 6x9's so that is saying something. I would highly recommend this product to anyone looking for a great sound at a great price.

Wish the could handle more rms

I got a Power Acoustic Stax 1200/4 amp to power these and i must say it is an amazing cheap or not I had to turn the gains down to make sure I dont fry these babies my amp is 100rms per channel and these speakers are only 60rms.

Pros
-Sounds amazing
-Solid woofer design which was the selling point for me
-Clear highs and great mids..when tuned properly
-Umm its RF
- 1 Year sonic warranty

Cons
- They are 60rms
-No other cons

great speakers

these speakers are great. they can get very loud and im happy with that. however the tweeter can be a little harsh at times, but it sounds great all the time. these speakers can handle great amounts of power while not creating distortion or mechanical noise. i recommend this to anyone!

Great Value and very quick shipping to Australia

My overall experience was great, easy to use website, easy payment system, quick shipping to Australia, great prices much cheaper than in Australia. The speakers are awesome with great bass and sound, I installed these into my Kenworth prime mover and even with the windows wound down I can hear my music very easily and crystal clear sound. Thanks for a great product and service.

Amazing sound

I just bought these speakers to replace a bose stock sound system in my altima se r and it is night and day of amazingness. I thought the bose speakers sounded good but boy was i wrong. these are the future right here. Get these!!!

Rockford T152

These speaker sound clear in the upper range but sound blown with any kind of deeper bass line...they have a rattling sound like the voice coil is hot and this happens at a low volume. The stock speakers handled much more.

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

Makes sense Works perfect

I put a square behind ea. door speaker and a square on the inside of each pod and it made a solid difference, especially for the pods. The music sounds better, no hint of an echo or slight vibration that I'd get before insulating with NVX SD. Pods/speaker boxes should really come insulated from the factory. Install some squares behind your speakers and you'll hear the difference.

By Ron on June 12, 2026 Verified purchase

Nice speakers!

I wanted to love these speakers, but they didn' t fit my Mazda 3. I actually needed 5x7 or 6x8 speakers. Anyway, the speakers look good and sound great, and they come with a customizable trim piece that makes fitting them in a 5 1/4 slot very easy!

By Michael on December 13, 2024 Verified purchase