question about port sizing

[dadydolas 10+ year member]

i am about to build an enclosure and i noticed when going through the calculators on 12volt.com that the wider i make the port the longer it has to be to achieve the desired frequency.

what are the pros and or cons to making the port bigger or smaller

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[dadydolas 10+ year member]

oh yeah and its going to be a slot port

 

[psych0ticnemes1 5,000+ posts]

The larger the port opening the more air flow you'll have, which will reduce port noise and yield smoother air flow. Too big is a problem, as is too small. As a rule of them the port opening surface area should be at least 12 * the square footage of the box.

So for a 2 cubic foot box the minimum port area should be 24 inches.

To calculate port area, multiply port width time port height.

 

[dadydolas 10+ year member]

alright, thanks for the info.