Bought this after looking myself for a while, thought it would be easier and a good idea to get a package. The speaker come with no fitting screws(didn't say anything on website about not having the screws to fit speaker to sub box) and different terminals at each end so had adapt the speaker wiring to fit properly but a good speaker none the less. The amp has full crossover but not much in the way of adjustment,only 3 settings on the bass and treble rather than a full range , dissapointing really, would send back but I've already screwed the amp to the speaker box so I'll sell on as soon as I can. Won't be ordering anything again though. Lesson learned