changing the tuning frquency by port area adjustments...how to?

[BassAddictJ 5,000+ posts]

how do you calculate how to change the port by increaseing/decreasing port area and port length per given internal volume....?

also how do you do tha with areo ports and thier lengths...?

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[hofulstrof 10+ year member]

by shorting the port the tuneing goes higher.by making the port longer the tuneing is lowered. adding more port area makes the tuning higher.less port area lowers the tuning.

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