Find my port length?

[terra 5,000+ posts]

i cant put winISD on this computer:crap: so could someone please find the port length for me? and ive got 1 question

If i go to subwoofertools and design a box for 4.5 cu ft at 30 hz...but i need room to add lotsss of bracing. if i was to say...keep that port length and width but make the box a lil bigger..say 8 cu ft and then use 3.5 cu ft of bracing, would that be the same as how the box was designed frequency wise?

I need a box thats around 4.5 net cu ft at 30hz. except i need about 8 to 9 cu ft gross.

box is 40 wide x 16 deep x 24 tall what would the port length be?

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[Skip01 5,000+ posts]

wowwwwww....thats a ish load of bracing haha

Howd u figure you need 3.5cuft of bracing?

 

[terra 5,000+ posts]

trust me...lol...im using some serious bracing. even tho that was supposed to say 2.5 cu ft not 3.5. small typo lol sry

 

[terra 5,000+ posts]

ttt