Thanks //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gifDon't know what they are worth but I have used both the old and new. The new are definately louder and haver better authority throughout all the frequecies but the old were definately the loudest subs I had owned until I got the HDCs. But I have heard the complete opposite from other people, it really depends on your install, power, and vehicle