Customer Ratings & Reviews

Everybit as good as the more well known products

This came free with a bundled purchase,.. and I also purchased some Rattletrap Extreme as this wasn't enough for the car. I was expecting this to be mostly unusable due to the Name.

I was wrong.. it was every bit as good in thickness and adhesion as the more expensive brand I had bought. So if you can get this cheaper than other Sound material,.. go for it.

NVX SDVK4

Works great at a great price. I have it under my trunk lid and it keeps it from rattling too bad.

Hands Down to JBL

Pros: Very high clear sound + Decent Bass (without AMP) + Endure High Volume and no distortion.

Cons: None

I installed these on my Buick Century 2005. 9 years old head unit, old wires and wood they rock. I was so surprised with the quality of the sound despite all these bad condition of operation.

JBL963

Great Product installed in my motorcycle and will recommend for others

Excellent Speakers Still Going Strong

Bought these speaker last year and still sound good. Can take power really good, get loud and keep it's composure at playing loud. Sound quality is excellent. Excellent powerful speakers from JBL. These speakers are running off a Kenwood Excelon XR-4S amp and take 150 rms at 2 Ohms all day long. Very pleased with these musical speaker. Buy these speakers and you won't be disappointed.

Good product, not the easiest

Used a few sqft of this material, along with the equivalent from Streetwires (PartsExpress) and a ton of Peal 'n Seal (Lowe's) for the rest.

I would say that Peal 'n Seal was the easiest to apply, but also the thinnest (an cheapest). So if you are doing some serious job you may want to double or triple the layers.

The NVX material was the thicker of the three I used, and once it's glued it stays soft which is very good. But beware, you will never get it off again. The only thing I would reproach is that the aluminum is quite thick, which makes it hard sometimes to comply with shapes. But it is good to fill in big gaps or openings and add some rigidity.

My preferred material is the Streetwire stuff, which is a bit cheaper. It was thick enough and compliant enough to make it really easy to install and it sticks like crazy while being forgivable if you make a mistake.

Have fun!!!

awesome

simply amazing before i installed it i could not hear a clean bass at all by trunk was rattling so much but now my trunk is solid and i'm enjoying the bass it's cheap and awesome NVX for the win

loud and clean

This speakers sound nice everyone in my block said your sounds sound loud and clear if your thinking of getting them don't think twice trust me just know what you doing

NVX better than the Rest

Great price, great quality. Plus delievery came fast. Will buy again for rear door.

JBL

They Loud!!! Louder than expected, believe me guys its worth the money great product

NVX SDVK4

I USED THIS PRODUCT TO INSULATE THE SHEETMENT AT THE KICKPANELS AND THE FLOOR AREA BEHIND MY REAR SEAT IN MY1972 VW SUPER BEETLE. THIS PRODUCT WORKED OUT GREAT FOR ME, NO VIBRATION, REALLY QUIETED THE ROAD NOISE ALSO. OVERALL A GREAT PRODUCT.

Great product!

This is the first sound dampening material that I've used so far and I have to say that I am quite impressed with the product. I used it to reduce the vibrations generated from my sub at the back of my car. Since then, sound quality has improved considerably. For the price, I strongly recommend this product.

Great

Got the three way eclipse components in the front and these in the back. theses speakers knock. the eclipses can't keep up they're so clear so loud just awesome. Will put a smile on your face when you hear them.

awesome

this is the best stuff for the best price now

Not Bad

Good low mid and high because I like clarity with a bit of bass and this 6x9 is perfect for me.

works great

Less weight than other sound proofing I have used, cuts easy and with a hair dryer it will mold to any contour .

great value

These are the best and loud'st I've owned and heard and can put heaps of power in to the and they love it i have 4 of these and putting 200 RMS in to each and they pound they reproduce so much low bass and hi's and dont distort at all. These alone make everything vibrate. Had for over 3 months no prob they dont even get warm would recommend to anyone best quality and price

JBL wins

Simple go get them!!!Best 6X9s I have ever heard just put these in the front doors of my 06 frontier. No amp just my kenwood deck wow so loud and clear only draw back was the holes didnt match my doors no big deal just drilled new ones.Now gotta buy another pair for the rear.Ok stop reading reviews just buy them I promise you will smile from ear to ear

Perfect kit foe speaker installs or a single door.

This deadener works wonders for vibration and outside noise. It is thicker than Dynamat and will eliminate that horrible resonance caused by lower frequency notes transferred through sheet metal and rattles in plastic. It also improves sound quality and SPL.

Great sound

I've had them installed for a few days now and they sound great. I'm pushing 250 rms to each.

Didn't see a difference for my car.

I'm sure this may have different results for different cars. I simply bought this dampening kit to fix the rattle and keep in the sound. I'll give my list of pros and cons. I own a 2000 Honda Civic.
Pros: Installation is very easy. Simply peel and apply. It's recommended to have a roller to get in the cracks (which this kit does not come with). This kit does keep in sound. Outside the car you can barely hear the audio (in terms of actual music, not bass).
Cons: This con is pretty much based on the vehicle I have. The mat did not fix my rattling problem. I placed it everywhere possible in my trunk and I still had constant rattling. Really a disappointment when that's the main reason I bought the mat for.

JBL SPEAKERS

I love these speakers. They are great! I purchased them for a camry with jbl stock. My rear speakers broke so i ended up sticking with JBL and ordered these. They are easy to install. I did have to drill new holes for them because even though they are same size the holes are in different position. One of the speaker did blow out only after few months of use! I do not blast my music a lot. I might have done it a few times to test the speakers and they broke.

Great speakers that deliver the classic JBL sound.

I highly recommend these speakers. They're relatively cheap and the build quality of them is fantastic. As usual the sound quality is superb as with most JBL products. I personally have owned many JBL monitors over the years and currently own much of their professional products. The sound from the P963s is similar sounding to virtually all speakers I've had from JBL. Clear, undistorted mids and highs with a warm and revealing transparency that somehow stays neutral. Along with that the lows from them are great, I don't even need a sub. They get down very low for their size, maybe high 20s as a -6db point. Overall, my favorite car speaker. You won't be disappointed.
On a side note I give each speaker 300w RMS for headroom, so do not talk down on them if you are not providing them with sufficient power. This is with all JBL products, they are power hungry.

Good stuff

This dampener does what it's supposed to do. Didn't get to use it how I wanted to, but that's nobody's fault but mine.

NVX sound dampener

This product is easy to work with. You just need to peel it off and apply. I suggest you use a rubber roller with it.

Excellent

Great stuff. And I mean GREAAT. Gets rid of unwanted flex and looks appealing. Can't beat the price either

bon produit

je ne connaissais pas mais pour le coup,il est formidable mais toujours le problème de facilite d' utilisation.

**HEARING PROTECTION REQUIRED**

If you want amazing clarity, smooth sound, and outrageously crisp highs you're looking at the right product. I have a pair of these along with a pair of p660c's ran off of a gto1004 all JBL of course and besides the fact that they sound amazing they are just downright ridiculously loud, not exaggerating one bit. After you have the system full tilt through a whole song and turn it down it sounds like you're at the most quiet place on earth even if your going 60 down the highway. Your hearing is literally muffled after you turn it down. When I have people ride in the back I fade it to the front some because I know it's excruciating from the complaints I get LOL plus I've been back there. All kidding aside if you're looking for the best look no farther these things are fantastic, not to mention the magnets look like the should be on some sub woofers. JBL all the way hands down.

Great speakers

I highly recommend These speakers one of the best 6×9 I ever bought good value for ur $.

NVX SDVK4

The material looks and feels like a good quality product. It's heavy and got a thick aluminium backing. Additionally it's easy to work with and forms nicely to the contours of any surface.

I recommend this product.

Quiet Performance

If you are looking to improve the response of your speakers, look no further. This material helps dampen the area in which it is installed. I placed this material in the doors of my truck which improved the sound quality in the vehicle. I would never install any speakers without this material. Install, you'll be glad you did!

Great Stuff!!

I bought a small amount of this stuff wondering how well it would work to just eliminate the rattle in my trunk lid. I drive an E30 so the trunk lid is really light and rattled a lot.

Once this stuff was on, about 90% of the rattle was gone and this was just enough to put on the underside of my trunk lid. My bass inside the cabin also seems to sound a lot more clearer too. This won me over for sure.

Can't go wrong with some NVX!

I installed it with a small floor seam roller I picked up at Sherwin Williams and a hair dryer to heat up the material a little bit to make it more malleable to fit the curves of the bracing. Super easy to install. Took me all of maybe half an hour. Just make sure to clean off your surface before installing.

JBL is still Awesome

I have a pair of these with a 1200 watt Autotek amp in my Harley bags - absolutely rocks. i am breaking them in with the gain low but they still sound good.

NVX SDVK4

Good product at half the price of other brands.Will be ordering more.

loud and clear

I highly recommend this product to anyone that is looking for a loud and clear sound.

What is This Stuff?

When I ordered this stuff I really did not know what it was or how to use it but it became very apparent. I cut this sheet larger than the hole for the speakers and pulled the adhesive off and stuck it over the hole then cut slices from the middle of the hole and folded it under so all edges were smooth. Installed speakers on top of this and there you have an airtight cushion that the speaker sets on top.

Great speakers

I put these in my 2014 Ram quad cab along with JBL 6.5 components and their EZ series amp. Clarity is unreal and they rock hard! very pleased with the quality especially for the price. These perform on par with units that cost 3x as much.

Better then dynamat

This product work better then dynamat and its way cheaper! I would reccomend this to everyone I used it in my door panels and there is no rattle what so ever!!! Thanks sonic!!!

Good value, thick material

Much better than some alternatives I've used on Ebay. Thick material dampens vibration and road noise quite well.

By andrew on July 13, 2015 Verified purchase

Great Value !!!

These speaker's sound is the best for compare in many brand of speaker I have tested . I have bought too many of different expensive speakers , but I could not happy with them but these speakers . Bass , Mid , High of these speaker are right for me . Full balance . True sound . I feel like some one sing and talk in front of me . True 2 ohm take less power from Amp but more power for speakers . Very happy . That why I have bought another of these speaker again .

By Thuan on May 24, 2015 Verified purchase

Great speakers

Had these for a few months. Built well, Impressive sensitivity rating of 96dB per the manual. These speakers paired with jbl's component door speakers play crystal clear even at ear bleeding levels. I've got several compliments with these. Probably the best bang for your buck I've seen so far.

JBL is the best

These are the best JBL 6x9's and probably the best 6x9's anywhere. They need an amp matched for their wattage. I installed pioneer amp and I'm just playing an ipod through an original Cassete deck in a classic oldsmobile using a wired cassette. It sounds fantastic! I can imagine if I was playing lossless digital files through a modern plaayer clarity would be a little crisper, but this really kicks ans never distorts at any level. I have to keep the original deck since it is a classic car, but it is a concert hall in there. The folks at Sonix had a great price and shipped right away. Thanks. I'm extremely satisfied. For a jazz loving audiophile, these speakers are the Best.

JBL always a sure bet.

I installed these P963 into the rear deck of my Accord Coupe. I also have the JBL P660c component set installed into my front doors, running off an Alpine HU without any additional amplification.
With these speakers and the proper dampening of the doors and deck, I don't see a need for a sub, in a larger car, perhaps, but not a small coupe or sedan.
JBL are known for their up-front mid-range and dynamic vocal range. If you like sweet relaxed mids and laid back highs, these are probably not the best choice, but if you are into guitar blues, kickin' drums or electronic, get them.

By Fuelish on July 6, 2015 Verified purchase

Awesome Speakers

Great sound, good bass and overall superior product. Use these speakers actually in my motorcycle and sound is awesome

great service

I'm recommending these to all my friends sound great and have deep bass

By Tiffiany on September 4, 2015 Verified purchase

Great quality/Value!

Used it on the rear speaker panel. now, less vibration and good sound.

I would recommend it.

By Zjon on August 24, 2015 Verified purchase

Quality product

Easy to install,works great for the purpose. May want to buy larger amount of product if doing more than 2 doors!

Easy installation

Was buying home depot junk than got a roll of NVX. Lays down great and stays in place! Made a world of difference in my 500 hp trans am with exhaust you can hear a mile away. Could actually talk inside the car after laying it down on the rear of the floor and hatch area. Have bought more since and will continue to!

By Richard on March 24, 2017 Verified purchase

Works very well.

This is the first time using sound deadening material. But i can tell you this is worth it.
Makes a plastic factory sub box more solid.
Great product.

worked perfect

very easy to use. careful tho. only 4 sq ft not the 4 cu ft i thought. misread and assumed. my mistake. covered trunklid and works like a charm

By Anonymous on March 5, 2019 Verified purchase

Good Stuff....

Much better than thinner sound dampening material on Amazon. Easy installing, works great!

By Anonymous on July 28, 2018 Verified purchase

NVX SDVK4 - 90mil 2.3mm THICK

Works great. It’s perfect for every application and completely eliminated the annoying rattle from the trunk.

Awesome stuff

Previously bought the NVX door kit and was highly impressed, its just as good as all the name brands . Purchased this to finish my build ..even have NVX amp and speaker wire kit , NVX hands down is the real deal .

By Chris on September 28, 2017 Verified purchase

Works Great!!

This is the 2nd time ive used NVX dynamat for my vehicle and it makes a difference everytime. Ive acually used on the exterior of my vehicle under the body panels of my cadillac fleetwood which has a bunch of chrome panels and it does the job! Would definitely recommend to stop rattling on your vehicle!

By Edward on September 6, 2017 Verified purchase

Looks good

Didn't get a chance to use it yet but seems pretty good

Great product

Great product at an outstanding price. Easy to install and definitely helps with the sound.

Easy and effective

Easy install for the trunk, Would need more for doors in the future

By Anonymous on June 26, 2019 Verified purchase

Great cables

If you are looking for a set of 4 channel wires these are the ones you are looking for.

By Ronny on January 23, 2017 Verified purchase

Best Price

This stuff works awesome and the price was perfect. I will definitely order again when I get the extra cash to line the rest of my trunk!

Solid

A nice solid piece of sound dampening. Works as needed and isn't hard to install even without the right tools.

By Justin on July 1, 2016 Verified purchase

Better than the others

Stuff is as thick if not more than a lot of other more expensive brands.. I have never heard of nvx but with this type of quality I kinda want to try their subs out now..

By Kelvin on March 13, 2016 Verified purchase

Great Sound Dampening Material

I used this to line the front doors of my car. It is very easy to cut with a utility knife and the adhesive is very tacky. I applied with the handle of a screwdriver which worked great. Applied around the speaker mount and inside of the door panel. Door skin is now very solid sounding and midbass also has a more solid sound. I will be purchasing a bulk pack in the future to apply to my entire vehicle.

Take note that there are other things that rattle than the metal before stating this product does not fix rattles. One, it could be that you did not apply to the area that is actually rattling. Second, be sure to wrap all wire, cables, and some mounting clips with fleece TESA tape, which is sold on this site.

By Anonymous on February 3, 2019 Verified purchase

Excellent product

Every bit as good as the big name sound deadeners without the big name cost. Entire car is covered with this product and its mercedes quiet.

By Tony on January 15, 2018 Verified purchase

Great product for the money

Great stuff really does a good job would recommend to anyone looking to get a quieter ride

By Michael on March 16, 2017 Verified purchase

Super sticky, super sound proofed, super oh ya

The youtube video definitely helped me get the strategy to roll this stuff on correctly. Thank you to Allyn for all the videos. I have now mastered my DIY skills in car audio.

NVX SDVK4 - 90mil 2.3mm THICK

used this to sound deaden my tailgate, could tell the difference this made when tapping on the metal!!

By Anonymous on November 12, 2019 Verified purchase

Randy In Lansing

great stuff. I have used stinger before this one as they really are a must have on 85% of the cars out here if you want good sound. I would say its a very fair price as i think there is only 1 other sound damper that is cheaper but it also is .02 mill smaller. so all and all it was a must have as my Infinity Kappa 60.11cs speakers sounded like crap until i put this in and now the are the best sounding speakers i have ever had

By Randy on January 8, 2017 Verified purchase

Toyota Tacoma

I put this on my Tacoma since the box of my speakers were hitting metal, once I installed this nothing but fire from the base then before when it was all metal hitting

great value

I got some free in a nvx amp purchase and it came in a box and was not creased or anything, looked great and was comparable to the q mat I had

By Kyle on March 27, 2016 Verified purchase

Good 6x9

Great price, great sound 2ohm speakers. If you looking to upgrade your factory speakers and don't want a a sub. Go get some JBL p963

By Arthur on September 18, 2015 Verified purchase

JBL P369 6X9's!

I have yet to install these, but already know how I feel abut them! I've been installing JBL/Infinity/HK Int gear since the 80's. They always represent a very good ballance of SQ/efficiency/SPL performance & value!

Never downplay speaker efficiency as 3dB higher sensitivity rating = 2X the effective amplifier wattage!
IE, your 50Watt amp now plays as loud as 100W! Couple that with these unit's 2.6'ish Ohm nominal impedance and you end up capable of high SPL's with a cost effective (50-100 W per ch)!

Excellent buy

I would highly recommend these. I love these speakers. They sound amazing and they will last. I have had mine for four years and use the hell out of them and they still sound great.

Awesome speakers

I used these JBL speakers in the bags of my Harley.. They sound great, nice solid mid range and super clear highs. Awesome speaker for the price.

Awesome

Best 6x9 for the money in my opinion, good base, good clarity, and all from a 200 watt vintage style receiver. Was very surprised.

JBL GTO938 WOW!!!!!!!

Best 6x9's I have ever owned! Unbelievable sound. Gets much than the ones I replaced that cost two and a half times more. Much cleaner sounding too! Can't beat the price either. Especially with the free NVX sound deadening and Scosche install kit. Thanks Sonic Electronics!

WARNING! THIS PRODUCT CAN BE COME AN ADDITION

Glen Griffith here... for anyone wanting quality sound for their car or truck.
I was looking for some speakers that would be an equal to the old JBL T545 loud speakers I had back in the 80s. I took a chance on the JBL P963s... WOW i was shocked. They are way better speakers.
The bass is sickening form a 6x9... totally beyond what I thought. Very deep and smooth. I am powering them by a Kenwood KDC 762 HD with an 250 watt rockford fosgate power plant. They are loud and most of all, clear.
Sonic shipped this babies to me fast. Great response to my order.

Pros: if you're looking for home quality sound in your car or truck, this is what you want.

Cons: I didn't get them installed quick enough.

Great speakers

I have had these speakers for a month or so now. I have them hooked up to a memphis 600 watt amp and they sound great. They replaced a pair of rockford fosgate speakers and honestly sound way better. Would recommend to anyone. For the money the sound quality can't be beat.

love high powered jbl's

If u got the juice then these are for you. Sound great fill awesome n look nice too.

easy install

Took out all vibration noise

By Frank on February 15, 2026 Verified purchase

Good speaker

Installed in back of 2003 mustang had to cut the holes out a little but sound great with an amp

By Anonymous on September 8, 2019 Verified purchase

Perfect Speakers

These speakers are AMAZING! They have A LOT of base (low end) for such small speakers, and they're real crystal clear. The only complaint I have - I had to send them back for an exchange because they came out of the factory as a defective pair. Left tweeter was distorted, due to some metal that got stuck in the cone. Other than that, definitely recommend.

By Caleb on July 25, 2016 Verified purchase

Great value

These jbl 6x9 sound great easy install will buy another pair. Great product for the money

speakers

the speakers sound good with my system and they were easy to mount in my 67 chevelle

Outstanding 6x9 Speakers

I ordered these from Sonic Electronix based on reviews and my vehicles audio parameters and they are better than I had hoped with my vehicle set up. I have a 2015 Dodge ram with the Alpine system. This system can be tough to upgrade because of the DSP in the factory amp and the 2 ohm impedance of the amp. I had read on several forums that none of the speakers receive a true full range signal and while this may be true, installing these speakers in the rear doors is a huge improvement over the OEM Alpine speakers. The holes line up almost perfectly. A small spacer that comes with the speakers could be used, but I installed without and there are no gaps between the speaker and the speaker pod. I just had to be careful to not damage speaker mounting holes on the speaker when tightening. I had to drill two holes in each door skin area under the speaker pod and use zip ties to secure the crossover. These speakers perform and are worth every penny. I have had many speakers over the years and I would recommend these to anyone. If you need a 2 ohm 6x9, this is the one and at this price it is like stealing!

By Clint on April 19, 2016 Verified purchase

Excellent speakers for the money

You cannot go wrong with a pair of these. They will take the power as long as you roll off the low end and send it to a sub box. I currently have 4 of these in my truck sucking up 200 watts rms to each speaker and they kick some solid butt!

Be prepared to blow them if you pump over 150 watts without dumping everything below 80-100 hz.

JBL P963

I have a pair of these in my Dodge Charger front and rear deck first thing first you have to run them off an amp they just sound and hit harder rnng them on factory is ok if it's ampified the over sized cone makes the bass nice and the crossover make the tweeters sing they might b a lil pricey for some but if I can afford them get them they want disappoint you

WARNING! THIS PRODUCT CAN BE COME AN ADDITION

Glen Griffith here... for anyone wanting quality sound for their car or truck.
I was looking for some speakers that would be an equal to the old JBL T545 loud speakers I had back in the 80s. I took a chance on the JBL P963s... WOW i was shocked. They are way better speakers.
The bass is sickening form a 6x9... totally beyond what I thought. Very deep and smooth. I am powering them by a Kenwood KDC 762 HD with an 250 watt rockford fosgate power plant. They are loud and most of all, clear.
Sonic shipped this babies to me fast. Great response to my order.

Pros: if you're looking for home quality sound in your car or truck, this is what you want.

Cons: I didn't get them installed quick enough.