Hi cradeldorf,

I know just what you are thinking. I had the same thoughts come back and bite me. Aditya has done a nice job helping to explain the pressurizing thing.

I had made a little boombox with some small Jordan speakers along with vented woofer all in the same box. I didn't worry about the Jordans because there was a vent so how could the woofer cause excess cone movement in the Jordans when there was a great big port in there to relieve the pressure.

Well, long story short, bye bye Jordans, hello new project.

I am now wiser.