SELF PORTING A CAB...Good Idea or Bad Question??

[burns_isaac]

Can I port my Cab myself?? It doesnt seem like a huge deal but has anyone ever personally done this? Is a port just a hole that allows the drivers to push and pull air more efficiently? Or...is it more in depth mathematically and scientifically? My father is a master woodworker so the tools wouldnt be a problem. Sorry for the rambling. If someone would be so gracious as to give me some feedback on this "idea" I would greatly appreciate it.

[billfitzmaurice]

Originally Posted by burns_isaac

is it more in depth mathematically and scientifically? .

Very much so. And if the cab is sealed it should be loaded with drivers that function better in a sealed cab anyway, so there's probably no benefit in venting it.

[crentest]

yes and no.
you may get a good result with just adding a port or two, there is math involved in doing it right though.
i'd give it a go, but that's me.
good luck.....

[bassman10096]

...there is math involved in doing it right though.

Enough to ruin the sound of a cab if you don't do it right - particularly a cab that was intended to be sealed and probably has drivers built for that purpose (as Bill said).

[gregoire1]

I ported my first cab when I was but a child. I used a drill and a hole saw. It was 2 inches diameter and 3/4 inch deep, no math involved (still can't really do math). It was a grand time! The results!!!!!!!!!!!!!!!!!!.... I really couldn't tell a difference. Now, I'd never do it unless the "math and science" justified it. If you'll tell us your box volume, and what speaker(s) are in it, someone here will help you out.

[B-string]

Chances are very good (what BFM was alluding to) that the speakers will easily overextend if ported with a basses signal. Not the best idea, lots of math and use of a pass filter maybe needed to prevent damage (which will make any "improvement" minimal).