Millercarbon, if he doesn't want to try the springs, yeah I'll have them back.
By the way nice write up, the concept surely isn't that hard to understand??
Well I was able to get it (once it was explained by someone not being a total clown about it).
pragmasi-
A spring is an energy store, a bit like a capacitor, so where does that energy go?.. Either back into the loudspeaker or into the floor. So the problem hasn't really been dealt with by using a spring on it's own, it will need further engineering or tuning to ensure the energy is dissipated benignly.
That is the beauty of Townshend, Max uses an ingenious air valve that provides just the right damping factor. Clearly explained in my Townshend Podium review.
Ordinary springs by the way do work a whole lot better with a whole lot less problems than you seem to think. Essentially what happens is the springs by isolating the speaker allow the whole speaker and the whole speaker alone to dissipate the energy. All other methods such as cones, spikes, mass loading, etc inevitably wind up exciting the floor, etc, all of which ultimately comes right back into the speaker creating a situation where the whole speaker/room is ringing.
In other words, the situation is we can either have the speaker alone vibrating and ringing, or we can have the whole room and everything in it vibrating and ringing. The second is much worse. Springs are the least bad answer. Townshend springs with optimal damping are even less bad than that.