Sorry about that! I sure hope your medical insurance covers exploded brains! I'll try to be less explosive in the future...

But seriously, once you get your head around the basics, it starts to make more sense. As Adhoc pointed out, you need ridiculously soft and very deep springs for ordinary light-weight speakers.... or you need to add a LOT of mass ... or you need to apply some extra "gravity", with mechanical pressure. Or you need specially shaped pads, such as hemispheres or cones... But that makes it even harder to calculate, because then the reaction isn't linear: the more you load it, the more area takes the load... so the form factor changes with loading, and thus the frequency and damping too... But they work...

My favorite material is still Sorbothane. They sell hemispheres for different speaker weights, that do work quite well.

Edited to add: I just went back and re-read what I wrote... Ummmm... I PROMISE it made a lot more sense while I was writing it! Really! I thought it was very clear and simple back then! But now.... Hmmmm....

- Stuart -