port question

[dbeez 5,000+ posts]

PORT Size Calculations and Formulas for WOOFER and Subwoofer BOXES

i am wonder if this **** calculater is worth a **** the box will be 2.25 cubes looking to tune to 36hz the port i was gonna make 13.75" tall and 4" wide does it really need to be 65.07" long to achieve that..

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[spltuscon 10+ year member]

Well the calculator is very accurate but I don't know where you came up with 65.07" long? It said 42.71" long for me...

That is a lot of port area for that small of a box though, you should seriously consider using much less port or a bigger box depending on what you're using for subs and what you're trying to achieve.

 

[dbeez 5,000+ posts]

well they guy is trying to acheive spl i am not building it i was asked to figure his port area..i must have screwed up entering a measurement but i swear it came up to that number more than once but yeah today i get the same length a buddy checked it with his bassbox pro and said the port needs to be 49" so..