As with Yogiboy, my experience is that manufacturers always recommend ear level. Higher will increase treble; lower will decrease treble. So, flavor to taste.
Tweeter height...align with ears?
I just purchased some new monitor speakers and stands. These stands put the tweeters about 3-4" above my ears when I am in my listening chair. I am just curious how important it is for the ears to be vertically aligned with the tweeters?