Helppppp me im so lost.


Silver Member
Username: Sony224422

Deep River, CT US

Post Number: 137
Registered: Dec-04
Okay, so im building a box for one 12" alpine R.

I have everything set and i have the vented port figured out to Square Port Dimensions:
Height = 3.76 Inches
Width = 1.88 Inches .

How do i know how far from the side of the box do i put the port, and on the inside, how far back do i go before i stop so that theres enough air going through the port?

My box is 16.75 high, on a 70 degree angle. Thanks for the help.


Bronze Member
Username: Bigdanman


Post Number: 24
Registered: Mar-05
any where that looks cool i guess....

Silver Member
Username: Theelfkeeper

Stockbridge, GA USA

Post Number: 265
Registered: Feb-05
if your width is 1.88 inches, then thats how far you can go back to allow enough air to flow and to keep the port the same all the way from beginning to end, otherwise you'll change the tuning. as far as placement, almost anywhere will work
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