Best Isolation Device for Speakers?

My listening room is in a late 19th century house with suspended wood floors. The loudspeakers are sited upon 2" thick maple platforms which in turn sit on top of Aurios 1.2s. For a little over $500 it turned out to be a very worthwhile tweak.

Regarding coupling vs. decoupling, I don't see how if I solidly couple any object to another object how "energy" is only drained in one direction. Specifically, if I couple my speakers to the floor and the floor vibrates, then won't some of that vibration get transmitted into the speaker?

Rtn1, I honestly don't know why the Aurios work so well under my speakers, I just know that they work. As I said earlier, my house is an old wooden structure with suspended wooden floors. The house vibrates from internal sources (HVAC and stereo) and external sources (I live a half mile from an interstate highway). In addition to the speakers I've placed my entire equipment rack on a maple platform placed on top of Aurios Pros. It's not a huge or dramatic upgrade, but it's definitely worth the money and effort. The Aurios produce a general cleaning up of the sound with a better presentation of low level information.