I second the blueprint's. Awesome subs. Even better price. Even though I have been a diehard RF fan for years. The blueprint's will mop the floor with the HX2's. And on top of that sound d@mn good while doing it.
Put them in big ported enclosure. And hold on //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
And if your putting all of this in a daily driver. I wouldn't tune the enclosure that high. I would try around 30-32hz. They will hit a little deeper. And still be able to shake the fillings out of your teeth. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
totally agree with ramos the blueprint will get louder than an hx2 i would think especially since ramos sent his like 3kw for a burp and i know even the power hx2's can't take 2000watts not for long anyway.