Quote Originally Posted by walpurgis View Post
I have seen the specifics for the Batpures. Can't remember the exact details, but I recall thinking they rolled in too low down and had insufficient sensitivity.

Generally, in my opinion supertweeters should roll in gently above say 18kHz and have a sensitivity near that of the main tweeter. One exception being speakers utilising Celestion HF1300 main tweeters, which cut off sharply at a bit over 13kHz, requiring the supertweeter to use a 'mirror image' slope going upwards..
My Opera M15-20th Anniversary horns do exactly that-(come in at 18K .)
http://opera-consonance.com/products...h/M15-20th.jpg

IMG_1737.jpg