ok I have a pair of mb quart DKD 5.25's in the door but I also have a pair of mb quart tweeters in the dash. I recently blew the 5.25's and was woundering if I could just go with a mid driver in the door since I already have the tweets. I am looking for somthing can can handle more power the tweets and mid range speaker will be running of a u.s 4 channel amp. I am also running 6x9's on it too. Any suggestions would help. If I should stick with a coax I need some names of stuff that will hold 75-100 watts rms.