Port Length v. Hz

[Heavy Hitta 10+ year member]

Whats up guys....im building a box tuned to 37hz (port 11in long), and i was thinking about tuning a little higher to maby 40 - 42hz. Would i make the port longer or shorter....this port thing always had me confused?

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[skmfkr 5,000+ posts]

Whats up guys....im building a box tuned to 37hz (port 11in long), and i was thinking about tuning a little higher to maby 40 - 42hz. Would i make the port longer or shorter....this port thing always had me confused?

shorter. as long as the port area stays the same.