That is my idea for a box for a Fi Q 12. The triangles are 4 X 4, so they have an area of 8 sq in each, for a total of 16 inches of port.
The problem is that when I calculated the port lenth for tuning to 32 hz, it is like a few feet long. This box will be about 1 foot wide and deep, and 1 1/2 feet tall. Is there any way to make this port, or do I have to scrap the idea?