Check my numbers
Well Ive already cut all the pieces, but these numbers should be right.
Here we go.......
This is a ported box for my SX 15.
As RE says, make it 3.5cuft @ 32hz
I got these measurments 34"x13x18" and that gave me 3.56cuft net.
I then calculated port disp. -
Port is 32hz
Take the length and subtract .75 and then multiply by the height and then multiply by the width+.75 and then divide by 1728
Which is 1.07cuft for the port disp.
Sub Disp is 0.18cuft.
Now, I have my net volume, and my displacements, now I need my gross volume and I get that by adding up the net and displacements.
So my gross volume is 4.81 cuft.
Now I adjusted my measurments to compensate for this.
Which is now
35.5"x13"x18" = 4.807, and when you do significant figures it comes out to be 4.81cuft.
Now, all I do is build to those measurements and that will give me 3.56 net in the box when I add port and sub, correct?
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