It should be noted that Harman Japan operates fairly independently within Harman International to the point that they commission their own design and manufacturing (mainly in China) for much of their product line. In other words, Northridge has nothing to do with most of the JBL branded speakers sold there. To my knowledge, the only exceptions for the JBL product line currently listed on Harman Japan's website are:

S9800
S5800
S4800
SK2-1000
HC5000
HB5000
4348
4328
4318
4312D
Project Array