square vent help.....

[yelhsa]

ok im build a box for my 2 JL-audio0-4's its gonna be ported

im use ing a program you may have herd of WinISD well im trying to get the pro size and i dont understand something here

and im hoping you guys could help me out here

i am wanting a square vent down the center of the box between the two woofers i was thinking of a port thats 4inches wide(side to side) by 10 inches long(top to bottom)and 13 inches deep what i dont under stand is on this WinISD program it has a box thats says vent match how do you use this box?

whet i put my vent size in 4x10x13 it gives me a vent match of 0.02 is this good

what kind of numbers am i wanting to get here for my vent match

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[ridered36 10+ year member]

I dontu understand what your trying to do

 

[RMKrider1 10+ year member]

Whats the internal volume of your box? Also what tuning freq. are you trying to achieve? Let me know and I'll punch it in and see what I can come up with