I ended up replacing everything in my JBL PRX415M because of the poor quality of the JBL components.
Unfortunately to start with I received one pc with transport damage, which was replaced by Thomann very smoothly.
I mounted these drivers and the sound was good.
Unfortunately one driver just gave up before I could really start using them for a gig.
Again, Thomann came through and replaced the broken driver without hassle.
Thomann's service is unparallelled.
I think i just was not lucky with these drivers because they seem to be very well built.
I ended up mounting more powerful RCF's instead of the Eminence drivers.