zamco

I've been reading up on active and passive setups, I got mostly that with active you get more options to tweak your setting or whatever versus passive using crossovers you're limited and doesn't sound as clean?So what do I need to do to run active? Now, I'm wanting to run 3 sets total 1 in each door (2dr coupe) And 1 set in the back 1 6.5 and 1 tweeter on each side Like this: I'm thinking I need a 4 ch. amp? I was thinking either dc 175.4 or sundown 200.4 Thanks for any input, I'm a complete noob when it comes to front stage