thehardknoxlife
10+ year member
CarAudio.com Veteran
If your port is 3 1/2" wide now, add a piece of 1/4" on the inside of it and it will be 3 1/4".i need 3/4 inch tho. then why do ppl like bigger boxes then?
What size box depends on the application. SPL competitors use smaller boxes to take advantage of the better power handling. They also don't care about efficiency, they just want that one single note that produces the highest score. It just depends on what you're trying to achieve.