QPower 15 Inch Heavy Duty Single Vented Carpet Covered Durable Car Audio Extra Large Vehicle Subwoofer Enclosure Woofer Box, Charcoal Gray

Bought this originally for the skar 15 svr d4 to be ran at 2 ohm. It worked pretty good with it sounded nice for the most part but could tell it was tuned a little high. I did the measurements and used a port calculator and says it's tuned around 35 hertz. I've pushed that sub to the limit and the box has done well. I upgraded to the 15" skar evl d4 ran at 2 ohms and omg it sounds so much better. Still out of spec for the subwoofer but is holding up well. By the measurements I took using the box calculator says it's roughly 3.9 f³. Port width is 2 ⁷/¹⁶ port height is 15 ³/¹⁶ and length is 16 ¼. Enclosure is built well from my experience and the weight backs that up. I will be upgrading soon but I do recommend this.

Hello! Researching boxes, well I hope you have time to read! This box has been amazing, I've had it for a couple months running a Kicker CompVR 4 ohm 500 RMS subwoofer, at max volume all the time. This thing is HEAVY...well bulky, it's weight is just how big it is, keep this in mind for later. The carpet had a slit in the bottom and some of the corners were missing carpet but it was in my tan truck so ... yeah doesn't matter much to me, may matter to you. It looks and feels good too, the carpet is close feeling to my 2005 toyota camry LE's carpet in the trunk. In my 2004 F150 Lariat, it sounds great, shaking windows and my chest and back too. Keep in mind, loudness will depend what you decide to run in this box, I am not 100% sure how well it can hold against like 2000 watt RMS 1 ohm subs... or just any ohm at such a high RMS, the connection ports are still holding well, and the port its self has no visible wear The port for the sub to throw air out has no visible inside cracks in the last 4 ish months and still none presently, they did good on glueing and screwing the box together, this thing holds FIRM! Overall, I can't say much more it's great, it just works! I'd play a video if I wasn't writing this at night time haha, hope this helps.

Box was well built but they ship it in a thin cardboard box so the corners get damaged. We all know the Amazon delivery workers are not gentle with packages. I sent it back because of the damaged corner. They need to ship it with more protection.

I personally give the box 5 stars. They did a really good job on this box. You can se a little of the seaming but it’s nowhere near annoying. The box did arrive with a hole in the packaging but no damage to the sub box, luckily. Very solid, heavy, unflawed and performs with the presence of an earthquake! When pushed, runs clean with no rumble. Ran a sound generator thru it and felt it at 32Hz as specified, tuned nicely. Loaded it with a Skar Audio SDR-D4 15” 1200 watt sub which has a really thick and wide suspension surrounding so I paired it with the PowerBass SWB 15G - 15” Subwoofer Grill. It fit perfectly tight inside the Skar mounting gasket with a little work. Like prying a tire on a bicycle rim, but not that bad. It worked great because of its extra height. Loved the look and the performance. I use this as a home theater sub because (1) Most subs I’ve gotten in the past clipped out early, probably cheap; (2) this combo is priced well for me since I already have a Crown 1502 amp in bridge mode pushing 1050 watts. Woofer wired for 8 ohms. Hope this review helps you decide what you want to do.

Rear panel was loose and they don’t use any wood glue it’s all nails. The box I received also had a small tear in the carpet. It’s good value if you have a cheap sub but don’t use this for something expensive. Also In the break-in process of my sub I wasn’t able to crank up the gain for my amp and when I finally could I heard the rattling of the panel, thinking it was my sub bottoming out I resisted tuning my amp come to find out it’s the terrible build quality. The seller then told me there’s nothing they can do besides give me $20 lol what a waste.

Nice

Good build quality, I did put different spring loaded terminals on my box tho. Nothing wrong with the orignals just seemed a little small for bigger gauge speaker wire.

Decent box for the price but don't trust the box connector if you're pushing more than 1000w probably because 1500w melted the connector and wiring which could've burned my car down.