hey caco ive been kicking around a few ideas for my new box for my psi built 18'' and am having a tough time deciding on what i want exactly. i havent had much time lately to even think about the box but i finally messed around with the RE box calculator tonight and found something that might work. i came up with W-40'', height - 18'', depths both 22'', port width 5'' and port 2 length 2''. it comes up with a 32 hz tuning, 82.5 sq inches of port area, and is about 6.26 cubes total. i know this calculator isnt the most accurate and doesnt take into account sub displacement so thats why i made the box .26 cubes to big b/c i am looking for about 6 cubes total. any suggestions? i am a total noob when it comes to boxes and am looking for a little insight. thanks!