Roar 629

i dunno if this asked before or not. I'm lookin to replace my stock bose speaker on the door and the center channel with an aftermarket one. do i need a new amp? does the stock amp drive aftermarket speaker?

Zoomspeed

If I remeber right I think the bose amps will NOT drive aftermarket speakers, I think it has sometihng to do with the impedance that the bose system runs on that will mess up the aftermarket "normal" speakers. I cudl be worng on this though.