Because of the height limitation of my location. I was able to build a fiberglass box (sealed) that had a mounting depth of 6.5 inches. The sub is 6.18, so I have about 1/4 inch from the magnet to the base.
The magnet has a small hole on the bottom (for air I guess). Do you think I should have any problem with the clearance? My volume is .84 cubic ft which I meet the manufacturer's suggested internal.
The sub I am going to use is a Diamond Audio Mark2 10".