The extra adjustments could make an audible difference, particularly if you don't have any way of EQing your subwoofer with your receiver or an external EQ (which you could add, but then the price difference isn't as much). That said, if it is really new in a factory sealed box (not used and put back in the box, which it may be if it is not factory sealed), I think the one you are considering at half price is a better value, though probably won't be quite as good.