AVS Special Member
Join Date: Dec 2008
Location: Cham-Bana Illinois
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You have seen a slot ported box right? rather than a round hole like using pvc. Google slot porting or look on crutchfield etc...
Looking at your box dimensions, I took 36 wide by 15 tall by 15 deep as your outside dimensions.
So figuring a 1 1/2" wide port by 7 inches long by 13.5 inches high.
For you other box builders, yes this is a small port. Again, in a trunk, so chuffing should not be an issue and since the port volume has to be subtracted from gross box volume, this was easier and it kept port volume down.
Also, on a side note, build the box leaving the port, unsecured, You could play with differing port lengths to see what different tuning frequencies will do. and sound like. Just an idea.
"No one wants to fight the naked guy."