As you mentioned here, i'm also using a very sensitive horn tweeter. It is quite a bit hotter in output than the paralleled Beta's, but as mentioned, i'm crossing it quite high and there are always EQ's available.
Yeah, we're padding the FT-17H down a little to better match with the Super-12's output. But, it is a much better match padded than the original Audax was with it's lower output. More seamless integration and extension. Surprising, because I am very sensitive to high frequencies and had always preferred soft doem tweeters.