slot ported box question

[2throwed 10+ year member]

is there any way to figure out what a box is tuned to? i have a pre-fab slotted box for one 12" sub. the port is 2 1/4 in. wide, 11 11/16 in. long. i put my tape measure into the port and the outside wall is 15 3/8 in. deep, and the inside wall is 11 7/16 in. deep. does anyone know the freq. it is tuned to? are there any more dimensions needed to figure this out?

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[2throwed 10+ year member]

anyone? please

 

[lostdaytomorrow 10+ year member]

List internal volume of the box.

 

[shavenblazer 10+ year member]

Prefabs are usally around 45-50hz.