Can someone please do a quick check for me in winisd, I’ve input the perimeters for the 8ohm version of the ND65 and I’m confused by the f3 it is giving me, although the driver database says the integrity checks of the values I input are ok I kind of don’t believe it. It says my f3, for 2 drivers, vented and chebychev is only 73hz where as the same design using the 4ohm version has 50hz f3. I must be missing something?