Why can't you smoke the coil?
I can't get those videos to work. Everything downloads and then the browser sayd that it can't play the video because come component is missing.
Can you make a video with a cat? Put a sleeping cat on the sub, then plug it into the wall
What about subwoofer bungee jumping?
How about building a cylinder the same diameter as the sub about two feet tall, so the objects don't bounce off and away. Then place different objects on the cone, and plug the sub into the wall. Start out small (Gallagher style) with some juicy fruit, then work you way up to bouncing cinder blocks on the cone.