Ported Box Question

[Mark_ab 5,000+ posts]

How do you "tune" a ported box? What is involved, and what is the result of different frequencies? The lower it's tuned, what happens? Thanks

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[Mark_ab 5,000+ posts]

hmmm okay, I just read about what tuning equates too, but I still haven't found out HOW to tune a port, or does it just come a certain way?

 

[mrray13 10+ year member]

you "tune" a port with the port's diameter and it's length. the tuning ( i believe) is also based on box volume. again, i believe, the longer the port and the bigger the diameter of the port, the lower the frequency. i could be wrong on the last part, any help? i have just read the suggested box sizes for my subs, and going by it, what i said above is correct. i'd still like to hear from someone with a little more knowledge though.

to sum up my manufactorer recommondations:

the bigger the sub, the bigger the box, the bigger the port, the lower the frequency( in most cases)

 

[imral3 10+ year member]

i forget the website,but if you use a search engine, and look for subwoofer enclosures, you will find automatic calculators to determine box size, port diameter and length, as well as tuning frequencies.