How people talk about the cvrs and how they have no sound quality, I have 2 of these in the trunk of my 2001 grand marquis in a 10 cubic foot ported box and powered by a 2100 watt brutus and they SLAM. I mean get your mids and highs right and you won't have to worry if they sound sloppy its an spl woffer its made to be loud as no other and that's exactly what it is. I would recommend to anyone and thank you sonic electronics for the best prices anywhere