Impressed by firmware 7.1.3

[ogs]

re.: SAM. phase correction is constant. What you regulate is (amplitude) extension.

Ah that explains what I am hearing. By extension, do you that higher SAM % goes to a lower hertz value?

Yes. SAM at 100% is max extension and as much low bass your speakers can reproduce. the SAM % you choose is a balance of the speaker/room interaction and of course your own preferences.