Harman/JBL sources all of their drivers from different vendors (one of them used to be JBL Professional Manufacturing in Northridge until some jackass saw fit to disassemble it). I know many of the smaller Synthesis drivers are made in China. Some of the engineering is also done in China. A visiting Chinese engineer actually designed all the mf and lf inverted dome transducers in the JBL Performance Series with our favorite JBL engineer overseeing the endeavor.
My current JBL Pro stuff says Made In Mexico. Recone kits and replacement diaphragms.
The large edgewound voice coils are still made with same construction techniques used in the 1980's.