dude. just find a ~700w amp.
i have my 10" SE getting 800w with no problems in a ported box. i would go witht he larger of the two just incase you decided to upgrade. its not good to push an amp to its fullest 24\7. get the bx1500d amp and turn the gains down and wire it to 2 ohm for 1000w so it wont be pulling its maximum draw and wont clip\distort. it will be just over the RMS of that driver, and it will be nice and loud.
the resistances are never 'accurate' on any driver, as the music gets louder, the resistance changes- and vice versa. 4ohms or whatever they *say* the coils are, is just an average. so dont sweat man. i always like to overpower my sub with a little more than RMS so that i can turn the amp down to RMS so the sub is getting its RMS happily and the amp is producing less wattage than it was made for, and its happy too.
and remember, the amout of wattage a subwoofer can take PHYSICALLY and THERMALLY is dependant on the INSTALL (size\tuning of your box)... so these numbers are irrelavant anyway ! //content.invisioncic.com/y282845/emoticons/thumbsup.gif.3287b36ca96645a13a43aff531f37f02.gif
have a nice day //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif
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bx1500d or a different amp... cough*directed1100d*cough //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif