Need help with building a speakerbox, dimensions

[KNG SNKE]

I picked up a T1 D210 Rockford Fostgate 10 dual 2 ohm voice coil speaker and I am looking to put s speaker box in the trunk. I am a horribly picky person so the box has to be symmetrical and looking through the book for the speaker it recommends 1.5 cubic feet and 1 port. Because I am so particular I want to have a box with 2 round ports or 2 square ports. Is someone able to assist me in designing this box? I don't have the facilities to cut wood so I will have to have it cut at the home depot but any help would be awesome.

I would do a sealed box but a vented box is the recommened one for this speaker tuned to 40hz.

 

[jdeft1]

Speaker box building is a bit more complicated than many people think. If you have the specs....... I've found AJ free design software to be very helpful:

http://www.ajdesigner.com/speaker/asealedexample.php

 

[KNG SNKE]

I have all the specs and I can use the design that is printed in the speaker manual, but I want to do 2 ports, not 1. I don't think you can just add a second port.

I'm more or less looking for a box designing program that can figure out how to include 2 ports. I have some box measurements but I am not sure how to add a port to them.

 

[jdeft1]

What matters is the volume inside the port tube. Want two? just make each 1/2 the size in total volume. The problem comes in when the air velocity moving back and forth through the port makes a 'whoooshing' sound. Hence, a single larger port is normally desired.

 

[KNG SNKE]

Of each port? Does it work that way?

 

[jdeft1]

Yes!

If the design port volume is 10 in^3. just make two ports of 5 in^3.

 

[KNG SNKE]

The design calls for a 4 inch round port, 11 inches deep into the box.

 

[jdeft1]

So make two.... 4"X 5.5"

 

[jdeft1]

Also, I might add that the driver you bought may perform very well in the box dimensions given but I suggest you still run the specs through the Thiele/Small calculations......