Help with Port sizing

[Justin_1990]

Ok i'm gonna attempt to explain this as best I can. It sounds weird just thinking it but hopefully someone will understand. I'm designing a box for 2 subs, The outer dimensions are 21"H, 32"W, 18"D. My port is going dead center with subs firing up and port firing back. My ports dimensions are as follows 19.5H,3W,32L. Now this is a dual sub enclosure so when I go to run my port It hits my back wall and i need to turn it to go along the back of the box my question is do I go 32" from start to end on each side when the port makes its 90 degree turn or do I go 16" total per side. Hopefully someone can understand what im asking.

[MrSkippyJ]

Your port basically splits the enclosure into 2 right? 32 needs to be the length, where it splits you splits the width in half. If your port is 6" wide at the front then it will be 3" wide when it splits.

[Triticum Agricolam]

6 hours ago, Justin_1990 said:

Ok i'm gonna attempt to explain this as best I can. It sounds weird just thinking it but hopefully someone will understand. I'm designing a box for 2 subs, The outer dimensions are 21"H, 32"W, 18"D. My port is going dead center with subs firing up and port firing back. My ports dimensions are as follows 19.5H,3W,32L. Now this is a dual sub enclosure so when I go to run my port It hits my back wall and i need to turn it to go along the back of the box my question is do I go 32" from start to end on each side when the port makes its 90 degree turn or do I go 16" total per side. Hopefully someone can understand what im asking.

Your port needs to be 32" long, from start to finish, measured down the centerline of the port.  The fact that your port splits at the back of the box doesn't change the fact that it needs to be 32" long from the start to either end inside the box.

Like MrSkippyJ said, you reduce your port width in half where it splits, so your single 3" wide port will become a 1.5" wide port on either side of the split.