help with tube ports

[tRiGgEr 5,000+ posts]

wow, so what do i do with the figure that infinity gave me that said 3" by 10.35" for one sub?
Also, i used the program and it recommended a 5" by 39" port which is rediculous. With 2" ports it was a managable lenght, but are they too narrow?

You can go ahead and use the 3" port. Just know that port noise will be a high possibility. The IP's are no SPL subs but they do move some air.

Yes 2 " would be too small. Remember try to get at least 25 square inches.

Radius x Radius x Pi(3.14) = surface area.

So a 4" port. 2 x 2 x 3.14 = 12.56 square inches of port surface area.

2 4" ports or, 3 3" ports or, 7 2" ports. Even one 6" port would be good.

 

[DBfan187 5,000+ posts]

2 x 4" Precision Ports.

 

[BLD 25 10+ year member]

Thanks for the help everyone! So should i have a shared chamber, or should i have seperate chambers and a port in each side?