A problem I noted when switching from the LX5 (500Hz LF crossover point) to the N1200S (1200Hz LF crossover point) with my D130 (15") / D131 (12") bass drivers and LE85 midrange drivers. The sound became excessively peaked in the midrange with the higher crossover point. might this have been due in part to "beaming," i.e., a more narrow dispersion pattern of those frequencies by the larger cone drivers?
I know I can knock the HF level down further with the addition of an L-pad, but wondered if anyone has done any measurements of frequency dispersion characteristics of large driver cones?