great bass small space

[ax600 10+ year member]

Hello, everyone I have a sub box that is 2.5 cuft and measures 13x29.25x11.75. inside. I have a new rockford power hx2 15'' sub that I would like to use in this box. The problem I am having is that , I am unsure as to what the port sizes should be to tune to 33hz. Can anyone please help //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif . currently I am using this box with two 4'' ports 18'' long //content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif , but I think that there is room for improvment. Any help would greatly be appreciated. thank you.

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[ax600 10+ year member]

Ok so port volume is easy to figure out once you discover the 12 volt . But once you get the port lengh can you just divide that number by two if you wish to run two ports? so one port 54'' or two ports 27''.

 

[hdave 10+ year member]

how do u fit a 15" sub in a box that measures 13x29.25x11.75?

 

[ax600 10+ year member]

easy the dimensions are inside peramiters. the outer ring on the sub over laps a little,reason being that I dont have very much space to work with.the outside of this box measures 31.5x14.5x13.

 

[ax600 10+ year member]

Can my ports be run outside this box to take up less volume inside the box?Does any one have a formula for that? I am getting realy good at talking to my self. Oh well at least it gets my number up there a little.

 

[ax600 10+ year member]

problem solved