Quick question

[muddin wolvy 10+ year member]

Say my box is 4 cubes w/ sub displacement. Do I use that figure when figuring port area/length? If so, is my internal volume still considered 4 cubes, or do you have to factor in the volume the port takes up?

TIA

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[phemps 10+ year member]

port area is around 16 sq inches per cube net. but you get the port length with your net volume. so what the sub sees at the end after displacements

 

[muddin wolvy 10+ year member]

but you get the port length with your net volume. so what the sub sees at the end after displacements

after what displacements? sub displacement and like bracing?