Need Help Porting Box

[C.Sanchez.A]

This is the the box I need help porting.

The I would like the port at the bottom (facing forward) but facing up would work too.

The box is just a little over 1.5 cubic feet. I left room for the port. I will be putting in a 12" DC XL. As for the tuning I don't know, what ever you guys think is the right choice.

Here are some of the measurements.

Edited December 7, 2010 by C.Sanchez.A

[s_carter]

the only way you can get help with porting this design, is by posting the dimensions and volume of the box, and driver that will be used with it, and what kind of tune you are looking to achieve.

[C.Sanchez.A]

Really need help!

[fecupe2001]

Damn, that´s one weird box! why does it have that shape? and, if you have 1.5 cubic feet before displacement, the port should be external hommie, if not, it´s gonna get way to small for that sub!!

Said that, i would get an external 4" aeroport maybe? something like 12" long giving you a 39 hz tuning, i don´t think you would be able to play low frequencies too strong with that small box, so why bother trying? depends on your music likes my friend, if you want to play lower then you could get something like 16" long, giving you a 35 hz tuning if you use 5" of the port inside the box and 11" outside the box getting around 1.4 cubic feet after displacement.

I forgot to ask you, what´s the sub displacement???

Edited December 11, 2010 by fecupe2001

[C.Sanchez.A]

Damn, that´s one weird box! why does it have that shape? and, if you have 1.5 cubic feet before displacement, the port should be external hommie, if not, it´s gonna get way to small for that sub!!

Said that, i would get an external 4" aeroport maybe? something like 12" long giving you a 39 hz tuning, i don´t think you would be able to play low frequencies too strong with that small box, so why bother trying? depends on your music likes my friend, if you want to play lower then you could get something like 16" long, giving you a 35 hz tuning if you use 5" of the port inside the box and 11" outside the box getting around 1.4 cubic feet after displacement.

I forgot to ask you, what´s the sub displacement???

1. the box is over 1.5 after displacement, with room for a port.

2. the box is shaped like that because it's part of a bigger box and the "cut out" at the bottom back is to make room for the lip in my truck.

3. I do want to play the lows.

The recommended box volume for my sub is 1.5 after all displacement. Once I find the right size port I will adjust the box to have a final volume of 1.5.

[Sanitarium]

http://www.carstereo.com/help/Articles.cfm?id=31

You want 9 to 11 square inches of port area per cube for aero ports, 12 to 16 for non flared ports.

[C.Sanchez.A]

What do you mean by squar feet? Isn't squar feet 2D (only a surface) Would that mean the opening has to be 12 to 16 ?

[Guest]

What do you mean by squar feet? Isn't squar feet 2D (only a surface) Would that mean the opening has to be 12 to 16 ?

Yea its the opening. Like a 3 by 4 inch port would be 12 sqin worth of port. Depth just affects tuning essentially

[C.Sanchez.A]

Ok. Now That I understand that, what would be a good "tuning"? I'm going with a 12 square inch opening.

[C.Sanchez.A]

Still need help tuning it.