That's interesting and not what I expected! Fun when surprises happen. Vented it could I suppose, I wasn't comparing Qes...
What I was referring to mainly was the swept displacement of the ten is significantly less than the displacement capacity of the 12.
Not only is the cone area smaller (of course) on the ten, but the Xmax is significantly smaller.
My memory is crap, but does the 12 have a 28mm Xmax and the 10 is just 18mm?
Whatever it was, I was thinking that you could get twice the air moved by the 12.
Try to model them sealed, both in equivalent boxes (.7 qts, .8 Qts), and with full power - I think that will change things... Is that what you are showing there? Those do look like sealed curves...
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