I have a 12" JL audio subwoofer in an Obcon ported box. I'm not sure of the specs on the sub but i know that it sounds great and hits hard. It is an older model because i have had it for a couple years with minimal use. It has an 820 watt pioneer amp that is mounted on the top. It hasn't been in my vehicle for a while It's been sitting in my closet taking up space and i have a little one on the way so i have no use for it any more. the box and amp alone are worth over $200 and the sub is over $100. I am asking $250 obo for the setup. call Ryan.