Postby Lance » April 7th, 2008, 8:04 am
US Patents have Life Spans of upwards of 14yrs, The square solos haven't been out that long,
Kicker probably Patented other aspects of the Woofer,Special suspension design, Motor Cooling, Coil design, Its quick Change Recone of the SoloX. Which other Brands aren't using.
But they can't copy the Shape.
I believe Hifonics has a Square sub also.