One other thing: As cheap as possible, he doesn't want to spend a lot, he just needs moderately decent stuff. I wanted to use CVRs since they're $80 each but they're too deep......... if we can't find anything else we could make rings and make them fit though.
make the rings and get the cvrs...all the work would def. be cheaper than the diamonds
the only diamonds that could work are the DS10's because of the mounting depth, but they can only handle 200rms. i bet u can push them a lil more but def not to 400rms. i was looking at the D3's but they require a 5.6in mount depth.
I may be wrong, but with 1.25 cu ft per 10" sub you may be able to get away with ported, and I've heard a DS12 running off of under 200 watts rms in a ported box between 1.5 and 2 cu ft and it sounded pretty decent.
idmax 10 M.S. when you hear that sub you will literally sh!t you pants. lol.
i went over to woofersetc.com the other day. they are like a minute away from my work. anyways one dude outside had the idmax 12 he bought from there installed in his car. so i heard it and it was awesome. he said the 10 sounds just as good.