[bossobass]

You're both talking about pressure pushing out of the cylinder.

To repeat, when the 2 drivers are in the out position, the cylinder distorts to ovoid, when the drivers are in the in position, it returns to round.

Of course, I'm not talking about a visible flex, anymore than you'd suggest the cube's flex is visible, but flex is not good in any amount, no?

Noah Katz has posted something about his tests of box flex. I don't recall if he actually measured the flex or used math formulae, but if he did measure a box, I wonder if he included a sonotube in his testing?

Bosso