BELVA MDFD12 Dual 12-inch Car Subwoofer Box Sealed 3/4-inch MDF Prelined Polyfil

This helped my subs hit deeper lows and came with some quality padding inside to allow extra extension. The separated chambers help each subwoofer claim its own space and would protect the other if any ever malfunctioned. Definitely recommend this box for anyone wanting to rock a good sized sealed enclosure. 12” subs fit perfect

Great product works great

Got it for a friend and he loves it.

Almost perfect. Great value! Gotta say, this is possibly the 1st prefab box I've purchased that didn't require lots of work to make perfect. I didn't "need" to caulk the joints, as they were all pretty well glued, but I already had my caulking tube loaded up, so I sealed it extra tight to be safe. Two Infinity Kappa 1200Ws in this box sound FANTASTIC. The specs claim 1.23 cu ft per side, but the interior measures 12.5x12.5x12.5 (which comes out to 1.13 cu ft, almost PERFECT for the Kappa 1200w). Do note, the hole for a Kappa 1200w is slightly larger than standard, but I was able to fit the speakers with minimal effort and a little trimming of the holes. Overall appearance is TOP NOTCH, aside from the metal logo on the box. Would DEFINITELY recommend to anyone looking for a good prefab sealed enclosure.

I have two JL Audio 12W6 v3 subs. I had them in a ported box, but due to the variety of the music I listen to, the ported box was way too "boomy." It hit hard, but since no one masters tracks at similar balance and volumes, some tracks would sound really great, then another would have so much base, I was constantly adjusting the bass control on my Fosgate T1500.1. I mean the boom was strong enough to break my rear view mirror from the windshield three times, with the last time taking the glass with it. Enter the idea of a sealed box. While I get less vehicles shaking bass, I get considerably clearer thumps from the kick drums in metal, to a great clear boom from rap and hip hop. This box is very well constructed, the perfect size, packages really well, and arrived a week and a half earlier than projected. I got it in three days rather than the two weeks quoted. IF you want or need a nice compact box, and your subs need about 1.1 cubic feet of air space per sub, this is the box you need. With the displacement of the sub considered of course. Keep in mind, you do lose about 10Hz in the low end going to a sealed box, but boy it's made a world of a difference.

Works as intended.

Mine did not come with any polyfil. The connections inside are cheap. The overall box build is nice and sq is good. Mine also arrived with a damaged corner but I’m not sending it back over these issues.

I purchased the dual 12" sealed enclosure for my daughters Jeep Wrangler and installed 2 Rockford Fosgate P3 subwoofers in it. Powered by a Punch 1000x1d amp it sounded phenomenal! I was very surprised to see how well it was constructed. Built with 3/4 inch MDF all the way round, and lined with polyfilm. The carpet was nice and tight and seemed high quality. I use to build custom subwoofer boxes when I was a teen and have even been to some of the competitions in the IASCA circuit. This box is no joke, and if you can't build your own then I recommend this box, especially for the great price!