Yep, metal -dome tweeters CAN be brutal. I find that spkr. placement can alleviate some of this-the main offender IME is off-axis response. I recommend playing around with the amount of toe-in to find the least annoying positioning.
First reflections off of side walls can also play hell in this frequency range-try the mirror trick-put a lamp where the speaker is, and have a friend walk a mirror along the side wall- the point at which you can see the lamp from your listening position is the place to kill the reflection with an absorbent panel.
First reflections off of side walls can also play hell in this frequency range-try the mirror trick-put a lamp where the speaker is, and have a friend walk a mirror along the side wall- the point at which you can see the lamp from your listening position is the place to kill the reflection with an absorbent panel.