Thanks for the help David. I have a couple tricks up my sleeve to keep everything sealed. The box will be elevated off the sole to allow airflow. I also plan on dynamating everything under the helm.
I was slightly concerned about the boundary loading causing issues. I have about 10" of room between the sub and outside hull so hopefully it shouldn't be an issue.
The magnets at the closest point are going to be 3" apart do you think that this could cause issues?
Here is a shot with the top off of the box.
http://i368.photobucket.com/albums/o...ps6knda30t.jpg