arizona

06-11-2008, 10:42 PM

So I finally figured out the dimensions and I'm attempting to figure out the port dimensions.

The external dimensions of the box will be 40wx16.5hx25d so the internal are 38.5x23.5x15

This gives me 7.854 cu. ft. to work with. According to bassbox 6 a port 15hx4.5wx18.5d gives me a 33.03 hz tune. The port would displace 15x5.25x18.5 = .843 cu ft. (the 5.25 is 4.5+wall thickness. Is this correct?)

Sub displacement is .303 each so .606 total. So box volume is now 6.405 before bracing displacement.

My port area would be 4.5x15= 67.5 inches right? DD recommends 66 sq inches of port area...is this per sub or would it be the same because I am running 2 DD 2515's. Do I have sufficient port area?

So if I made a mistake please tell me what it was. I think I might mess with the dimensions a bit more later to get some more space if I did this right.

The external dimensions of the box will be 40wx16.5hx25d so the internal are 38.5x23.5x15

This gives me 7.854 cu. ft. to work with. According to bassbox 6 a port 15hx4.5wx18.5d gives me a 33.03 hz tune. The port would displace 15x5.25x18.5 = .843 cu ft. (the 5.25 is 4.5+wall thickness. Is this correct?)

Sub displacement is .303 each so .606 total. So box volume is now 6.405 before bracing displacement.

My port area would be 4.5x15= 67.5 inches right? DD recommends 66 sq inches of port area...is this per sub or would it be the same because I am running 2 DD 2515's. Do I have sufficient port area?

So if I made a mistake please tell me what it was. I think I might mess with the dimensions a bit more later to get some more space if I did this right.