OK, for those who wanted to know, here is what's inside a buttkicker....
This shows where the wiring comes in. The flimsy input springy things broke off. That's the #1 point of failure I've seen in these things. That input should be redesigned.
Hey, check it out! An Eminence label! What we are looking at is two magnets with what appears to be two voice coils inside, placed face to face.
Here is a shot of the end. You can see the weight inside that is covered in cork. You can pretty easily reach in and move it back and forth. It'll move about an inch both directions. I guess the cork is in case it bottoms out against the outer case.
Other end of the weight. N stands for north maybe?
My fix was to solder and shrink wrap a piece of 16/2 to the voice coil leads. I tied a knot into the wire for strain relief. This pic shows how it fits in the original spot where the pushy/springy things went.
Another view of the pigtail.
Sorry for the iPhone pics, but that's what I had handy.....