Can't Remember exact port tuning of box I built

[badstang123 10+ year member]

I'm trying to recall the exact tuning for my ported box. The total volume (Displacment of woofer, port, wood already considered) is 3.22 cu ft. The port openning is 23 sq in. and the port length is 12.5 inches. I believe the box is tuned right around 34 hz, but if someone could double check for me it would be greatly appreciated. I'm confused about how to do so. Thanks.

- Justin

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