audio car speakers

Hello! I have a 2016 Mazda 3 Touring with the Bose audio system. I'm not happy with the sound, and attribute that to the cheap, paper speaker drivers. Has anyone replaced the speakers for better ones? I do tend to use Centerpoint. My concern is that Bose is sending the speakers a signal that...

well the car is going to be my winter beater, btu the questions i got is, mine seems to have 6 speakers? theirs 2 speakers in ea door, and two behind the rear seat on the (kinda like back dash) now i havent seen anywhere tht the car is a 6speaker system so id like some feedback on that, also was...