Question about my sub

[free f22a]

I have a custom built 18 im gonna be putting in my accord. The box is gonna be 34 by 31 by 13. I dont know how big my port should be? I dont know much about the sub. It has a lightning audio storm motor and a exile basket, dual 2 ohm coil. The guy said it was 3000 rms. So if any one can help out

[bumpstick]

decide what kind of port you want, slot or round, and what frequency you would like to tune the port for, then use the calculators on this website:
http://www.the12volt.com/caraudio/boxcalcs.asp

[free f22a]

Ok cool thanks that helps a lot