Hi. I recently bought a mcintosh c45 preamp to run togheter with my mc1.2kw monoblocks. However my speakers 250ti that i run with a jbl b460 have startet to sound hard on the top in certain categories. Ive tried with my jbl L96 and they sound fantastic so Iam planning on switching tweeter. Does anyone have the specsheet on the tweeters mentioned in the title? /Rockya