i'm a german newbie here and since last week i own a very nice pair of JBL 4425.
The speakers are in very good condition and the woofers are refoamed and measured (with data sheet) by a german professional:
He didn't recone because of the very good condition of the original Woofers.
My 4425 came from a studio-basement only stored for custom replacing-requirement,so they are like NOS !
Now i read about the replacing Radian 1225-8 drivers with aluminium diaphragm and Mylar surrounding.(cost 99€ + Back Plate)
The original JBL 2416H is titanium dome with diamond surrounding structur...
Ok there is no need for a replace ,but some people said the Radians are more "refined" sounding and have less distortion because of lower mass.
Somebody compared ???