If you look at the shape of the side view of the cone, it looks like at triangle. On the negative going signal, it moves like a spear. On the other hand on the positive going signal, it has a higher drag because of the parachute effect of the cone. What I do is use a tube configured in such a way I can variably decrease the negative going signal . Regarding my impression with the two 6.5 driver with Neo8 at middle It takes the performance to a higher level than the focals but with the negative limiting signal in place.Distortion became lower,imaging became better, Naturalness also has been enhanced. I would not go back to the Focal arrays in a close back and the 8 Neo.To me,It is simply a different level considering the bassmid are very cheap.