Ok I have ordered an Alpine type R subwoofer dual 4 ohm to run on a 2 ohm load on a TMA 500.1 amp. I am going to build a box and have a design that will fit in the back of my truck. 22 inches wide by 14 inches tall by 14 inches deep. It's like 1.85 cubic feet but i don't know how to make a slot port tuned to 32 hz. what dimensions do i need to make it to accomplish this. thanks

 

Try these two links http://www.carstereo.com/help2/Articles.cfm?id=31
http://www.the12volt.com/info/diagrams.asp#subw
I did a search for port tuning a subwoofer got 316,000 hits
I am sure one could help

 

i use both of them sites like everyday...they are the best