Townshend Springs under Speakers

Is it normal for people to have admins delete posts on this forum?

Yes holmz, sad to say it happens all the time. If I told you how it works you would not believe me. Suffice to say it is biased and counterproductive. Look around you will notice the same small group constantly posting off topic blather. Many of them have been here so long now they think they own the site. In effect they do, because they have bullied and deterred many from posting. Check out the recent Tekton discussion, where they mocked and attacked the OP for having the temerity to post a positive review.
https://forum.audiogon.com/discussions/my-experience-with-tekton   
It is fine in their book to insult another member calling his room a "dungeon" like theaudiotweak did just above. That is just fine, and no one will ever be able to get that one removed. But watch how fast they remove this one for having nothing the least bit insulting, controversial, or even off topic. You did after all ask. This is the answer. But they can’t stand the truth, and so when you see it removed that will prove everything I just said is true.

Lot of projection in that last post. Why is it some here think others do things for the same reasons they do? 

I know!. It's a validation of their sad and predictable behavior.
Nothing more.

All the best,
Nonoise

Man...this thing is still being discussed....wow...if you needed springs, I would think the speaker manufacturer would have provided them or somehow implemented them into the design. Still ain't putting slinkies under mine. My tannoys sound great as is....

I thought the same about my ATC's.
It's unfortunate that this thread has become about personalities rather than the topic under discussion - because the Podiums actually work as described.

Ok, "My Turn"...
Anyone here with an abundance of experience in this realm of study, "And there are quite a few of them about".
They all know at least one thing about this subject for sure.
And that is, that there is simply not any single, "One thing".
Whether, "device, method or practice".
That will truly (solve) this issue with ANY combination of, "floor, flooring, room, speaker and etc.".
There are simply too many variables.
But understanding a few concepts. Along with a bit of experience implementing the several basic ways we approach problems of this nature. This helps us to narrow down "Hopefully" towards what is that "best formula" to utilize in improving a systems properties. 
A bit more quickly. Sometimes this is easy.
Sometimes not.
And sometimes, "We just get lucky"! Or at least I have felt like that at times over the years.
One thing I have also learned is that there is simply "No substitute for mass". 
Speakers with little mass. "Regardless" of cost, space-age technology and the designer/engineer's reputation? 
Those "Low mass" speakers will always sound like they are in fact, "Low mass speakers".
At times the best of them may, "At low energy output values" sound pretty good. But once at what most, (99%+) would call a reasonable output in an avg. environment? They begin to ring, vibrate, resonate and dance to their own (now) distorted voices.
Which is all the same thing. Just differing verbiage.
In the effort to make speakers smaller, lighter and with with as few materials and mass as possible? Many modern speaker, "Designers" have fallen prey to their marketing divisions wants.
If you simply calculate the energy your transducers as a whole are going to output at your reference listening level. It is not hard to then take the overall weight of a given speaker as one value. And then translate the energy output of the transducers, "Minus the energy lost in heat exchange, voice coil friction, Air friction across various interior surfaces and etc. etc.".
 And then, Each speakers weight must then be translated into a form and then value, which after calculation must be in excess of the energy in inertia against which it is being forced". (The dead weight of the speaker).
(Which is sometimes, but not always, "An applied force In a single direction") or "vector of force". 
So that you may in turn find that your, (Tiny, plastic and nearly weightless "Bose" speakers) may be at best, "problematic".
I'm just throwing that out there.
Doing my part.  Trying to help.