need help determining port length

[dmuney]

ok ill try and keep it simple how long does my port need to be to be tuned to 20hz

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[SlugButter]

You will have a very hard time tuning at 20hz. I’ve done 25 hz on a home audio sub, and the box was almost as big as the couch. A port tuned to 20:hz in a 4 cubic foot box would be 6 feet long.

 

[SlugButter]

Subwoofer Enclosure Calculators, Parallel, Series, Port Length and Volume

www.the12volt.com

 

[Buck 5,000+ posts]

Why do you want to tune to 20 hz? I can design you a full box, if you want. I'm a big Sundown fan and Sundown is what I actually design for mostly, I've done a ton of X's and Z's in the past 6 months.

 

[Popwarhomie 5,000+ posts]

Tuned to 20hz would suck unless your music is whale farts.

 

[Clifff150 10+ year member]

I’m not sure why but the whale farts comment has me rolling lol