enclosure question

[snail05 0]

I was just wondering how much space between the end of the driver to the wall of the enclosure is sufficient?

Meaning what wont hurt the driver or sq/ spl.

I'm thinking of a 15" havoc ported. The xmax spec is 30 mm if that matters.

Thanks in advance and merry Christmas to all.

[Quentin Jarrell 671]

If the sub doesn't have a pole vent, no clearance is needed. If so then at least the diameter of the pole vent between the sub and the back wall

[snail05 0]

Ok thanks. Ill have to wait for the sub to figure that out... unless someone has an AA havoc on hand and wants to measure for me ; ). I'm pretty sure there's a pole vent in the pics on the aa site.