Box design help please

[deano17 10+ year member]

I am building a ported box for two 12" kicker CVRs. It's going to be 38" wide by 16" high by 17" deep. This is going in the trunk of my 1999 Altima.

I have the bottom cut and the left side. I'm not sure about the port measurements. I wanted to ask here before I went any further.

Here's what I have so far:

Top/Bottom: 38" x 17"

Left side: 14.5" x 15.5"

Right(Port) side: 14.5" x 16.25"

Back: 38" x 14.5"

I want the tuning to be 34hz

Can anyone help me out with the dimensions of the front piece, port piece 1 and port piece 2?

Thanks!

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[schrummy 10+ year member]

here you go

http://reaudio.com/speaker_box/LPort_Box_Calc.html

 

[IDSkoT 5,000+ posts]

I am building a ported box for two 12" kicker CVRs. It's going to be 38" wide by 16" high by 17" deep. This is going in the trunk of my 1999 Altima.
I have the bottom cut and the left side. I'm not sure about the port measurements. I wanted to ask here before I went any further.

Here's what I have so far:

Top/Bottom: 38" x 17"

Left side: 14.5" x 15.5"

Right(Port) side: 14.5" x 16.25"

Back: 38" x 14.5"

I want the tuning to be 34hz

Can anyone help me out with the dimensions of the front piece, port piece 1 and port piece 2?

Thanks!

The RE calculator is a good tool... but it's often misleading.

Are those your outside measurements or inside measurements?

 

[deano17 10+ year member]

Outside measurements. I just did the RE calculator and went through the tutorial on how to design a ported box. Measurements were off by a bit.

I know those dimensions will fit in my trunk. I definitely want the tuning to be 34hz. I have the sides, I just need to know what the dimensions of the port pieces are and the front side. I know the port will be 3-4 inches wide. I'm just a little confused on how to calculate the port pieces and the width of the port area.