My friend talked to him a few times. The voice coil is made of 200ft of 8 guage wire. The speaker wire is ..... something big, don't remember //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif. He had problems with his truck, because it broke after they burped it. He designed his own amps for it.... some rediculous amounts of power. It takes a minute or so to charge up and then it blasts.
I heard he tried putting it in a brick enclosure but it broke it.... not sure though. One thing is certain, he says he will lend the sub to anyone that makes a vehicle to run it.