Need a AERO port box design, help?

[ls2poweredgoat 5,000+ posts]

2.2 cubes tuned to 32 hz with 4" aero port. Can you guys help me out here?

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[bball09124 10+ year member]

13 inches long

 

[ls2poweredgoat 5,000+ posts]

13 inches long

Just curious, but how do you figure this out?

 

[PsychoTheRapist 5,000+ posts]

http://www.psp-inc.com/

 

[ngsm13 5,000+ posts]

Just like a slot port, it's the cross sectional area of the port...

Pi * R^2

nG