That Faital has the brightest 4k response I ever heard in a speaker with 4k response. I think Faital does that speaker a disservice by saying it tops out at 4k. The chart on it says it tops out at 5k on axis but 4k 45 degrees off axis. Meanwhile, if you're going to stick a mic in front of it, that's what counts IMHO.
I'll tell you, there are things I like about both speakers. They do sound like they have the same low end through headphones, but the Faital's clearly brighter and a little less upper middy. If I had to choose one, I'd go with the Faitals but I could find a reason to have both.
So is it just my imagination or do these cabs sound tighter and cleaner than cabs with ceramics? What's your impression of them vs your ported 15's with the different JBL's?