Originally Posted by east tx skier
I have the 651s in the front and the 6501s in the rear (previous owner already made cutouts for components in the rear). As far as my ears are concerned, the 6501s sound quite a bit better. But if I didn't already have the cutouts for them, I'd probably put some coaxials in there and be done with it.
I love the look of the MM651's but If the 6501's sound better and are cheaper than that looks like the way to go. A previous post mentioned that the 6501's only lasted one season. Kind of a concern for me but who knows how loud or what they went through.