2.25 cu. ft at 40 Hz HELP!

[RollinRemz05 10+ year member]

Can anyone give me plans to a box that has 2.25 cu ft at 40 hz its for a T1 Dual 4 ohm

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[xluben 10+ year member]

shorten the second piece of the port from 14.5" to 4.5" and you get 2.3 cu ft @ 39.3 Hz.

hope that helps!

 

[RollinRemz05 10+ year member]

Is that the closest i can get? Im kinda new so I wanna get as close as i can to the specs

 

[SAG3 5,000+ posts]

its pretty much 40.......

 

[xluben 10+ year member]

tuning will vary a bit between programs anyways, but if you NEED it tuned a little higher (I don't know why you'd want to tune that high to begin with), you can just take an inch or so off the port length.

 

[RollinRemz05 10+ year member]

Well on the RF website it says 2.25 cu ft @ 40 Hz is recommended. Should i go by this or no?

 

[xluben 10+ year member]

i'd tune lower

 

[CarlosV 10+ year member]

tuning will vary a bit between programs anyways, but if you NEED it tuned a little higher (I don't know why you'd want to tune that high to begin with), you can just take an inch or so off the port length.

Where can i download a program or how do you calculate the plans

 

[xluben 10+ year member]

i use hand calculations for volume/dimensions and winisd for tuning.

or you can try this:

http://www.subwoofertools.com/forum/ported-box.asp?

 

[CarlosV 10+ year member]

i use hand calculations for volume/dimensions and winisd for tuning.
or you can try this:

http://www.subwoofertools.com/forum/ported-box.asp?

thanks //content.invisioncic.com/y282845/emoticons/smokin.gif.f1dc8d2acb1809e863ebd6a47eaa0d45.gif