Man when I bought my 2012 I had to go back because I thought there was clearly something wrong and I even compared it to another new stock unit.. those "tweeters" were SOOOO harsh in my ears I wanted to turn it off and listen to my ipod thru my futuresonics..
I did however notice that for whatever reason the highs werent as bad with the upgraded head unit with navigation (which I think is built by alpine)
none the less I wish you would have posted this earlier because the 2nd day I owned the car I drove to my local stereo shop and had EVERYTHING replaced with JL Audio (didnt want to fork out the loot for focal) although I am still not satisfied with the tweeter it has worked for now (as long as I keep my 12k -4db) but I def hear more nuances in my music so I can speak somewhat highly of the JL set up (although it is amped as well)
next up for me is THIS BOX and I will add some low end and I think I should be satisfied although as a musician and audio snob myslef (also owned and built a recording studio) I will probably never be satisfied but hey, thats my sickness..:cheers: