Need help with round port for my wife's new Lanzar 8in max

[Jeepjones85 10+ year member]

Im about to build a box for my wife's new little lanzar max 8in sub and Iv had nothing

but trouble trying to figure out how big around and how long to make it ? Iv been using

the12v.com's round port calculator idk im stumped lol

Im thinking a down fire box about .75cu tuned to 34hz or so.

Its going in a 2010 jeep patriot I'll prolly make the box short and long so she still

has room to put her stuff lol

Thanks for any help!

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[obxsurfisher 10+ year member]

There's a calculator on the precision port website. Not sure how accurate it is though..

 

[Jeepjones85 10+ year member]

Thanks

 

[mylows10 5,000+ posts]

2 "port 8.5 " long