I just bought an orion hcca 12" and I am having a guy help me design it using "bass box pro" software. He has told me that the speaker has a very narrow bandwidth, which he says won't give me tight accurate bass out of a ported box (which is what I expected). I told him that I listen to mostly rap, then he said "oh your gonna love it then"
The biggest thing is to design the box for the sub with some good software. Because the output will be incredible! Oh ya and I'm gonna put 2000w RMS on one 12 so i'll see how it holds up. I'm sure that it will take all of that power and more. Its a beast of a sub! Orion recommends that power for one speaker is 1200w-4000w.
I know a lot of people are in love with Fi and after seeing Steve's "Hoe" I am very impressed to say the least!! Be different get the Orion. Check out this vid I found its 2 Orion 12's with 2500w to each.
http://video.google.com/videoplay?docid=84...h&plindex=4