[Elizabeth]

Over on another site which I am no longer a member, but I go and read... Someone asked about the midrange in the 30.7 and why (blah blah) So I though, or would think. the actual midrange in the 30.7 is really the same device as in the 20.7  even though it may have some different outer casement changes to fit a different panel cutout (where the 20.1 had a
lesser' version, when the 20.7 came out. one of the big things was the improved mid panel)
So thought the 30.7 mid might have a different crossover to go with the dual woofer separate panel in the 30.7  That the actual design build of the midrange is really the same as the 20.7
Is this correct. or have I been smoking mushrooms?

[Ric Schultz]

This review has some details of the drivers:

http://www.hifiplus.com/articles/magnepan-307-fourpanel-dipolar-planar-loudspeaker-system/

[Elizabeth]

The comment of the midrange has a new thinner diaphragm... Same comment as when the 20.7 was introduced. So it is unclear if they are going further... or just slow to call something yeah we used that for 5 years now, proven tech....