Originally Posted by
NoTLaDStyle
6.5" speaker present a maximum surface area of 33.17 sq inch
6x9" speaker present a maximum surface area of 43.2 sq inch
6x9s also have bigger voice coils.
6x9 coax has a big ass MOUNT for the tweeter(s) right in the middle, so that already hurts their sq inchage. not to mention the tweeters are in the way, with the mount, so the voice coil is probably too big around it, the obstruction, and the hole for the tweeter mount is gasketed.