I have 1.2 cubes per sub in a sealed box. As for ported, I can't say because I've never heard thes subs ported. (I take that back, I heard one 10" p2 ported at BestBuy lol) Oh, and since they are dual 4 ohm subs, they can be wired down to one ohm too.
But take a look at this:
http://www.rockfordfosgate.com/rftech/libr...412_revA-TS.pdf
If you look at the numbersand the graph, it might give you a little eatra info to help you decide.
But like I said, I've never heard this sub ported so I cannot give an unbiased opinion.