theory1230 Posted January 16, 2011 Report Share Posted January 16, 2011 I would use a 4 inch vent from precision sound products. You can calculate the length at psp.com Quote Link to comment Share on other sites More sharing options...
cOmpressor Posted January 16, 2011 Report Share Posted January 16, 2011 You could do like I did and have the port facing one side of the truck. From the top down on the back wall, since you have 4" on top, a 2" wide port x the height of the box x whatever length. Quote Link to comment Share on other sites More sharing options...
theory1230 Posted January 16, 2011 Report Share Posted January 16, 2011 I would use two precision ports 4 inch by 10 inch long one on each side of the enclosure firing toward each corner. I like to tune enclosures in regular cab trucks around 37 to 40 hz. I have found that to give the best results. A small truck cab is not large enough to reproduce super low frequency's any way . Make sure to use a sub sonic filter to protect your subs Quote Link to comment Share on other sites More sharing options...
Budlite70 Posted January 16, 2011 Author Report Share Posted January 16, 2011 ok thanks again,i will see what i come up with,try to post some pics also Quote Link to comment Share on other sites More sharing options...
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