You are presuming the curves for all the passives use the same engineering procedures as the actives. I think the derivation of the Family of Curves (FOC) at Axiom has evolved. For example, I'll posit one way that the derivation has changed since the v4 passives were engineered: the weighting factors used to derive the listening window and sound power for the actives are different than the passives. Measurement procedures and equipment may also have changed. I'll also speculate these new learnings will make it into version 5 and we will see different curves.
Last edited by Mojo; 02/02/20 12:19 AM.
