Maybe fostex was inspired by the JBL .But the f200a is a much dif driver it has a drivern dust cover its like a sudo tweeter.milled basket, looks polished but its milled from a solid metal.Has a very advanced cone material its a ceramic composite.I have heard the vintage JBL there very good but not anywhere close to f200a.It seems like a line array wouldnt be right for such a driver.Think I will just do a MTM instead ,thxs for the post.