for a 12 polk sub the company says a 4 in dia x 10 long port. but in my car it has a little port turbulance. is their any way around that. also the box is 1.5 cuft so what is that port tuned to? say i wanted at port tuned at say 30hz how would i find out the specs?
i got this winddsl pro thing but it dont have my driver so i input my own specs off the manual but it never fking works. any better FREE software out there