Steve has three HW 15's on two 5750's and he's doing a 55 legal on music, IIRC.
His box is only like 2.75 per sub after displacements??? Something stupid small, they will get louder.
Matt will def be in the 50's if he's not retarded, we just need to see how good the build goes for him.
And the Heavyweight 9.0, if I remember correctly, is rated for 4k or 4500 rms, one of the two.
It's not hte monster you're thinking of, if I was correctly informed.
It will, however, put out some very impressive numbers on 16v
And it will do well over, repeat well over, from what I understand, rated RMS on 14v.