I just picked up some DIAMOND Audio D3 12"s. i think they sound really clear, loud, clean. they sound great. they get louder than my Jl w3 12 in a bassworx box. has any body ever messed with Diamond audio? i think i want some more stuff from Diamond
Just take a old basket and buy a new cone, find somthing to cover up the hole in the middle, than put a bolt thoght it and you can adjust the mass with washers, I have 1 15" 3 12"s 4 10"s but I dont want to sell. they are easy to build / tune
I hope this helps you out