NVX 12" X-Series Loaded Subwoofer Enclosure

Incredible Sound Quality and Punch

Got a pair in a 1.5CF per side, FoxAcoustics box, tuned to 35htz, and wired to 1 Ohm, delivering 1100 RMS on a massive D2400. The sound quality is second to none. Transitions are tight and very pleasant. I can feel the percussion and get plenty of SPL. Beat the REAudio S E X hands down. Amazed at the quality of the woofer, and what it delivers in such a small enclosure.

Outstanding value

Got the box and matching x series sub and was very happy with the quality and sound.
Outstanding value

By Frank on April 3, 2018 Verified purchase

Legitness

Was looking for a 12" box that's tuned around 34-35 hz. Didn't want to pay $250 or more for a custom build around where I live. I found it in this box but paid no mind to the cutout diameter measurements, (knowing it's made specifically for the x series) which I should have because it was too large for my DC Level 1 12. So I grabbed my uncle, he worked his magic, which was drilling tiny holes at an angle threw the sub mounting holes into the box, then screwed the mounting screws for the sub at an angle and got it mounted. And here I am to say this box is great, completely changed the way bass sounded in my vehicle. Just clean, loud and has perfect transitions. Wewt! Wewt! Go NVX!

By Aaron on March 14, 2018 Verified purchase

Looks good. Sounds great!

Just like the title says. These look very nice and the performance is awesome. The silver lining to the fact that the NVX X-series woofers don't fit in pre-fab boxes is that you are able to buy a box that was specifically made for the subwoofer by NVX. I bought 2 of these for my dual set-up and you might wonder why. I like being able to turn the boxes sideways when I go on trips with the family to be able to shove these in between the wheel-wells of my 300 and have room for our luggage. Most of the time I just run them side-by-side. Each sub has its own air space and its own port which is nice and separate boxes allows the flexibility to run only one if I need the trunk space or ever want to sell one or let my wife use 1 in her car. At first I was bummed out about having to get two separate enclosures but there are more benefits than negatives. Highly recommended!

By Terrell on August 14, 2017 Verified purchase

Install review

The construction of the sub looks solid and it has nice terminals(pre wired for 2ohm).
That being said it's really a 12.5 inch sub and may not fit in pre-made boxes such as the belva example I ordered with mine. I had to cut at into the side of the box walls to make the sub sit into the cutout.

Will update on how it sounds in the recommended sealed box ~1 cu. Ft. Once I have finished my install.

Can’t be beat!

The quality for the price paid on these NVX XQW subs just can’t be beat .
Amazing value for your dollars.

Amazing subwoofer

I'd recommend this subwoofer to anyone looking for a quality subwoofer, with a great mixture of sq/spl!! Sounds amazing and the build quality of this subwoofer is very impressive for the price!! I had an enclosure made for this subwoofer at 1.9ft^3 tuned to 29 hz and the sound quality is phenomenal while hitting super low notes as well. Big upgrade from my JL audio w3v2 12". Not that much louder in this box during break in but it sounds much better. Would buy this again and recommend to anyone looking for a great all around sub. I've owned Rockford p3, pioneer champion pro series, kicker cvr, etc and none match the quality and sound quality of the subwoofer .

By Christopher on August 27, 2017 Verified purchase

high end

these speakers are very high end. they sound great and play a great range of sounds. i got them on a deal and was very happy

By Anonymous on July 28, 2019 Verified purchase

10 years and my search is over.

I've gone through just about every sub there is from typical lower end Pioneer, kicker, alpine, etc to image dynamics, JL, focal, eclipse, infinity kappa perfects. even offstream brands SD, DD, SQ, Skar, Arc, etc and EVERYTHING in between all brands all sizes. For the price point of this woofer the build and the absolute sound quality w crisp clean deep and accurate punchy bass. This sub is one of the best ive owned and heard. Its ran off the 5th channel from my JL slash 500/5 with a 1.5 cu ft net tuned @ 34hz. This sub wants more power so I will be getting the JL HD900/5 soon. But the accuracy of this 12" is outstanding. I do recommend at least 350 watts ported and at least 550 watts sealed. If your a bass guy you will need two of these with a quality 700-1000 watts. 1 is good for your average person and will fill any vehicle with bass.

By Jay on December 8, 2017 Verified purchase

High quality subwoofers. Don't let the price fool you!

Bought two of these along with the NVX ported enclosures built for them. I also have 40 sq. ft. of NVX sound deadener throughout my car. These things put out nothing but pure, clean bass. No unnecessary rattles and no extra vibrations other than the notes being played. I've previously had 2 dual kicker l5 12's setups in sealed and in ported enclosures. These aren't quite as loud as the L5's in the ported enclosure but that's more to do with the kickers taking 1300rms and these getting 800rms. These sound so much better than the kickers. and were much more affordable. It's unbelievable how much woofer you are getting for $200 a pair. The Kicker L5's costs 400-450$ back then and even more now (L7's). My only complaint is that I wish these were rated at 600+watts rms. I'm sure they can handle it just fine but I don't want to chance going against manufacturer specs and voiding warranties. Highly recommend this as well as NVX enclosures and sound deadening.

Edit 3/4/2026: These are still running strong 9 years later. My old car finally gave out and moved these to a new vehicle.

By Terrell on March 24, 2026 Verified purchase