port question

[uzy 10+ year member]

i heard having a large port area is bad, is this true. what port area is recomended if your building a 3.5 cubes @32hz

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[blackbonnie 5,000+ posts]

your recommended port area is 56^2 inches, but your can give a little or take a little

 

[skadude016 5,000+ posts]

its not bad. probably about 50-60 sq. inches of port for 3.5 cubes

 

[jeremiah 10+ year member]

how much is to much?

 

[blackbonnie 5,000+ posts]

they usually recommend about 16^2 inches of port per cubic foot.

 

[skadude016 5,000+ posts]

how much is to much?

I have about 115 sq. inches on my 4.5 cube box and I like it plenty //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Trixter 10+ year member]

adire told me 28sq" for a 3cu' for my B-15 and that sounds a lot better than 58sq" in a 3.5cu' box...higher SPL too. i think the port area has a lot to do with the sub rather than just the box size.

 

[blackbonnie 5,000+ posts]

well i was just giving you what it says on a couple of sites i have been to, but maybe it is just for those subs

 

[PowerNaudio 10+ year member]

you want to select your port area, taking in to consideration your subwoofer parameters and desired tuning frequency, making the port bigger then necessary will waste usable space and if the port area is made excessively large, it could possibly allow the subwoofer to over excurt and get damaged. so just keep the port area to the minim requirements and it will meet and exceed your needs.