Im going to make a box for two alpine type R 12" subs. It will be 42x17x14.5 (externally) With sub displacement included, that gives me a volume of about 4.5^3ft.
I think I want it tuned to about 33hz because I want them to get pretty low, but still sound loud.
Now you all come in. I want to do aero ports, but I dont know how much port volume is needed.
What do you all recommend I use?
4",6",8" 1,2,3 ports?