Check out the CDT Audio website (http://www.cdtaudio.com/) so you can see exactly how high-end these sub woofers really are. I had this custom sealed box setup made for my 1995 Mazda MX-6 and I'm sad to have to let it go. I've had this setup for a few years now, and it's been amazing. These subs are unique in that they only require little air space to produce rich, clean sound. It's tough to get 4 10's in any trunk and adhere to the recommended air space needed, but with these subs, it's easy. This setup would be perfect for an SUV. It could also fit in other cars if the specifications match the trunk space (size dimensions available upon request). Each sub woofer has an RMS power of 250 watts, so you don't have to have a HUGE amp to power them. The beauty of CDT Audio is that their sole purpose in car audio is sound quality. These subs sound so clean, and since there are 4 of them, loud bass is easily achieved if wanted. The customization along with the subs cost me well over $1000, but I can't use them anymore because I'm getting a different car and they wont fit. Please feel free to contact me with any questions. Here are the specifications according to CDT Audio: (http://www.cdtaudio.com/pdf/MS-Minibox_subwoofers.pdf).
