Did them for a guy I work with, and I doubt he'll ever get them metered. He just wanted something better then the flea market 12's he had. He got that and more.
I was dialing them in and he was in the passenger seat. I had the remote knob way down, and he was pretty impressed, then I cranked it up and he jumped out of the car. They'll buzz your ears and make your nose itch. Not bad for a couple of budget subs and 1200watt amp. I think they've knocked all the loose rust off also as he gets some solid flex & rattles.