Is Phase and polarity the same thing?

It's not even that complicated.
6db filter preserves phase.
12db filter inverts phase.
On my 1.6 maggies, the x-over has both 6 and 12 db/octave elements....can't for my worthless life remember hi or low is which, but as a result, the HF part of the panel is hooked up out of phase with the LF part of the panel.

I believe this is what Eldartford meant?

Eldartford, silly question, than.
If 6db / 12db are 90degrees apart, how could you get the drivers back to phase in the Magnepan 1.6, which I have confirmed does use 'one of each' in its x-over? Seems they'd be 90degrees out?

Also, with most if not all modern rock, absolute phase is strictly of academic interest, since no effort is made to preserve or even identify phase. On some recordings in the past, my absolute phase switch made a difference, on most recordings, not.