MoeLester's Box Design? Displacement?

[HardHittaz00 10+ year member]

I ran this through two different programs, and both said that the internal volume of this box is 3.27148 cubic feet... MoeLester's title on it says 2.6 Cubes @ 32 Hz... I was wondering if it was displacement that was taken out to get it to 2.6 Cubes, or if it has the wrong title by mistake, because some of the 3 cube boxes he has posted come up to 4.1 and around there... I'm about to build one of these boxes, and don't wanna build a 4 cubes when I was meaning to build a 3 cube... Thanks...

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[squeak12 10+ year member]

Maybe they dont take the .75 port walls into account

 

[maldecido33 10+ year member]

thickness of the walls, the port displacement, and end correction factor (although it doesnt take up hardly any space) are all subtracted from the gross volume of his design to determine the net volume, which he gives.

 

[HardHittaz00 10+ year member]

Alright, makin sure... Didn't want the box too big for the sub...

 

[maldecido33 10+ year member]

yea i just did the math; you gotta subtract port volume from that 3.27 for it to equal 2.6

width of port * height of port * length of port (down the center, not the insie or outside walls; the exact center of the port)