Hey WayneSounds cool. Can't wait to see the midhorn.
About Eminence drivers, I read on another internet forum:
"The entire Pro Series of Eminence has a symmetrical magnetic field, whether by extended core or shorting ring, (Faraday ring).
Be careful not to get the Kappa series mixed up with the Kappa Pro series, or the Delta series mixed up with the Delta Pro series.
Only the Pro Series has the symmetrical magnetic field."
Does this seem right to you? Eminence don't seem to mention it anywhere.
Adrian