box and port calculation review

[derek33 10+ year member]

This box is designed for a single 15" avalanche driver. It was designed by a forumer at the ascendant forum. Id just like to double check the calculations

heres the box:

and these are the ports im using:

http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=268-352

and i will cut them down at 16.75"

should be tuned around 33 hz.

a quick question, if i leave the ports at 17" instead of 16.75, what will the tuning be then?

thanks for your time.

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[Moe Lester 10+ year member]

around 33 hz still... 1/4 inch isnt going to make much of a difference.

 

[derek33 10+ year member]

alright, in that case i will just save the trouble of cutting the pieces and keep them at 17"

 

[derek33 10+ year member]

up.

looking for some more opinions.

 

[derek33 10+ year member]

no one?