IMO 3 way passive is useless , I have never heard one worth a chit. The crossovers are usually a step up from crap at best, and pre-packaged drivers are bought cutting every corner known to man. To me if you are going to run some out of the box component set you really, really shouldn't run a 3 way. It takes a level of knowledge, tuning, and experience to make a three way sound right and if you have to ask about the installation it probably isn't the best choice for you. Stick with a 2 way and if you are unsatisfied with the output or quality, switch over to active crossovers and handpick drivers that will do what you actually need.