Thats about what I figured... although you are much more generous with the xmag figure...35mm top-plate 53.34mm WW so
53.34 - 35 = 18.34mm/2 = 9.17mm one way linear Bl (I dont groove on industry standards for how much motor force is enough, 100% or none baby lol)
19.67 one way 70% method as i figure it
I love eD 13Av.2 motors lol. make great underhung SQ drivers, dont cool for shiite though lol.These are my 2" top plate motors...
I'll be making a pair of underhung 15s with Ti baskets for my home theater whenever I get the funds.That needs to happen.