round port length question

[James Bang 5,000+ posts]

I'm trying to design a box w/ a 4" round port and i would like to use 2 ports. tuned 2.28 tuned to 30hz

using this calculator : http://www.psp-inc.com/

they say 30.08 inches, but would that be for one? or total length of both?

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[djman37 5,000+ posts]

it gives you PER port numbers.

 

[Death By Bass 10+ year member]

I'm trying to design a box w/ a 4" round port and i would like to use 2 ports. tuned 2.28 tuned to 30hz
using this calculator : http://www.psp-inc.com/

they say 30.08 inches, but would that be for one? or total length of both?

each port......

 

[James Bang 5,000+ posts]

....damn. i was hoping that wasn't the case. 30" is pretty long. Thanks for the replies.

 

[James Bang 5,000+ posts]

okay, i just came up w/ a design w/ the round ports and the length they recommend. would this be okay (pic):

or should i put both ports on the same side. i'd much rather have it symmetrical.