Thank you, I did make those adjustments and am now 4.5 with 75 port area while keeping 30hz.
Here are the subs I have. They are B2 rage V2 2 ohm 12 inch. I had 1 in a D4S pro fab v2 box and now have no vehicle set up fpr them, as what i did have the build going on i ended up trading it for a...