Need help

[WhiteFiver 0]

I'm designing a sub box for a friend of mine here, and I need a bit of help.

This is basically how it's going to look:

____

|_/\_|

Subs facing in Ports facing trunk.

2 Ports = 2Inches Wide top to bottom

Dimensions are Total

34"Wide

20"deep

14"High

3/4 MDF

Subs:

2 12" Kicker COMPVX

What do I need to get it tuned to 34hz, port wise?

If you guys would suggest a different tuning, what hZ value, and what size ports?

[WhiteFiver 0]

In this design, I've got the ports at 14" long.

[NB50 206]

That box is going to be on the small side for the subs.

[WhiteFiver 0]

CAn you give me a rough idea of the volume of the box?

[NB50 206]

About 3.2CuFt not including sub displacement.

[WhiteFiver 0]

How about with this design?

Depth: 33 1/16" bottom

28" at top

20 degree angle on back of box

Width: 34"

Hieght: 14"

Ports: 2" wide, 11" high, 14" deep

Made from 3/4" MDF

Edited November 21, 2008 by WhiteFiver

[NB50 206]

Are you sure your not going to run into clearance issues with the back of the sub hitting the port??

And since you are using sketch up you can be figuring the box volume. All you have to do is select an area by right clicking on it then choose area from the menu, then choose selection from the sub menu. That gives you the area of the selection then you have to multiply it by internal height/length/width and divide by 1728 to get the cubic feet. With the way you have that designed you might have to subtract port volume separately, your also going to need to divide it into separate sections the triangle part on the side being one and top to bottom (picking the shortest depth) being the other.

You also may need to work on you tuning frequency, I have a feeling it might be a little high.

[B7L|BL4Z3R 4]

How about with this design?

Depth: 33 1/16" bottom

28" at top

20 degree angle on back of box

Width: 34"

Hieght: 14"

Ports: 2" wide, 11" high, 14" deep

Made from 3/4" MDF

how do you make the wood with dept like it looks like 3/4 inch mdf

[WhiteFiver 0]

A helluva lot of time drawing lines

[bobonit 5]

Push Pull Tool.