im working with winsd lately and am designing a new box for the new 15" tc axis i play on getting within the month. And the box itself is around 5 cubes, and is tuned to 23hz. dont call me crazy, at 23 the response is virtually flat from 28-70. well the part of the program that's called "vent mech" worries me. it says if i use 2 3" flared aeros, id still be fine port noise wise. the program reads .09 for that section. now to me, this sounds UBER small port area wise, but people have said the program is accurate as far as determining if port noise will occur. however, ive heard stories of people having wicked imp rise and it dealing with the size of the ports etc. Should i be worrying?