Pls see the coil here biggest speaker factory in India (all speaker and subwoofer manufacture company) - YouTube
Is this the JBL differential drive?
Is this the JBL differential drive?
I think I spotted many different manufacturers speakers in that video, or at any rate extremely simmilar looking, down to the packaging, do they all share the same manufacturing facility in India, I don't know.
The title of that video is misleading. Its definitely not India. To me it looks like one place is definitely China (where they show packages of Aerons India) and the other is 18 sound, dont know the place.