Fi Q15 Ported Box Plans

[themerc 0]

Could one of you check my port length for me? 4 cubes @ 32Hz with 2.75" wide x 20.5" tall port is what I'm aiming for.

I used an online calculator and it said the port needed to be 29.5" long... but someone else told me it needed to be like 36.5"?

Thanks a lot

Edited November 23, 2007 by themerc

[BKOLFO4 29]

Could one of you check my port length for me? 4 cubes @ 32Hz with 2.75" wide x 20.5" tall port is what I'm aiming for.

I used an online calculator and it said the port needed to be 29.5" long... but someone else told me it needed to be like 36.5"?

Thanks a lot

29.5 is correct.

Use this:

http://www.carstereo.com/help2/Articles.cfm?id=31

Brian

[themerc 0]

Okay, that's actually the online calculator I used lol.

[themerc 0]

How do you measure the port length of a maze looking port? Which walls do you measure? or diagonals like pythag. theorem?

Edited November 23, 2007 by themerc

[Acidburn 10]

How do you measure the port length of a maze looking port? Which walls do you measure? or diagonals like pythag. theorem?

you measure along the center of the path

[themerc 0]

Thanks.

Well I've designed the box. I wanted it 4 cubes @ ~31-32Hz. The box is strangle shaped because a spare tire is going to be sitting behind the box, standing up... the spare and left back part of the box will press against a back wall in my trunk. I need to fill up the remaining .247 cubes with bracing. What do you think will be the most effective way to brace it? By the way the baffle is double thick.

[themerc 0]

Anybody?

How should I brace it? I've got .247 cubes saved for bracing.