--- On Thu, 2/7/13, Goran Finnberg <[log in to unmask]> wrote:
> " The weight of the cone of the passive radiator
> should be approximately equivalent to the mass of
> the air that would have filled the port which might
> have been used for that design. "
OK, THAT makes sense! I never got the impression that
the passive cone was anything but a duplicate of the
cone on the woofer.