Well I have my 6.5's in my kicks, would it be a good idea to put a pair of 4 inch speakers in my doors for higher Freqs. and for extra loudness and SQ as well
You'd probably be better set putting the 4's in the kicks and 6.5's in the doors but what would be ideal is to put all the speakers, 6.5's, 4's and tweeters in the kicks.