get a cheap clamp and you can see exactly how much rise you have //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gifmine is wired at 1 ohm, but "guessing" amps seeing 2.5ohm after box rise. so again guessing, im gonna say 1200w rms after rise..fk amp rating.. cant go by that. look up box rise, and how it fights amp impedance.
2k after rise would be great, but youll pay for it..
edit: mitchell0715 was correct, and i completely overlooked his post about box rise.
that said, ive read the vlf4480 is stable at .5 ohm with proper electrical.
Im guessing thats atleast 3 agm batts..