www.edesignaudio.com

^ That is all you need. Check into their K series drivers. They have fantastic SQL, and get nice and loud. Your sony amp could stand to give them a little more power, but I think it'll be a nice upgrade. I have a buddy who has some polk subs. When I had my K's I owned him on SPL and SQ hands down. If you want lots of bass...port the subs, they will love it. Good luck :thumbup: