Thanks for all the help thus far......I know I was giving up cone area, but most shops in my area stated one 15 in the right box would be most likely better than the 2 I had in the smaller box(really that box is the size for one of the skar 15s recommendations) . So I figured 2 15 at 2000 watts vs this X 15 at about 2500 watts I'd still be pleased because "more watts". With my power levels I'm not going to say its the sub just yet, maybe my power. As stated tho amp, alt are on the way and 2nd battery will be added also.
The Skars were supposed to be 32hz also, but I have no clue what that prefab box was tuned to. If the X doesn't work out guess I'll sell it and go another route, but at least everything else power wise will be already done.