Vibration Theory - Isolate or Drain?

Your tiny electronic vibrations in your player likely isn't going to be in a frequency you can hear, but I doubt that would convince you. The science behind coupling is to make the entire system as heavy as possible -- with more mass, the resonant frequency lowers. This should actually be harmful on your audio rack unless your rack is weighed down with a hundred pounds of sand (think metal speaker stands) if the resonant frequency is within audible range.

Decoupling -- viscoelastic material such as sorbothane actually absorbs some of these vibrations and turn them into heat. This is mechanical engineering 101, for more info, look up the "spring-dashpot" model.

I think in the medical, HVAC, etc. industries where vibration must be stopped to reduce noise or because of sensitive equipment, decoupling is most likely to be used. Coupling will pass vibrations onto other components where it will be harder to control; the idea is the control vibrations at the source, and that means using springs and hydraulic shocks in the worst cases to turn as much vibration into heat as possible.

The problem with coupling is it works both ways, regardless of the direction of the spike. Draining vibrations could just as well introduce external vibrations into the system, such as from the woofer, road noise...

Rakuennow, Please don't confuse audio with mechanical engineering stuff. Audio is about listening, not reading! :-)

Audio is really a black magic, all about subjective listening to your components in your home where the results often defy either generic logic or physics. But that's not only OK, but often fun.

Cio52,I have a rega planer 3 with a lot of upgrades on the mapleshape brass footers and maple platform.Do you think my table is worth doing the nano mounts to,what table do you have?

Rakuennow -In my experience, cones "drain" in one direction. Try putting "spikes" or cones upside down under a Turntable as I described above if you doubt it. My guess is that ball bearings isolate better as opposed to "draining". If the cones drain the vibration into a platform, chances are the materials will absorb at least some of the vibration. It would take a carefully engineered rack to transmit all that vibration to other shelves. Also, I believe most people will respect the weight limits of the rack they choose to use.
Thanks for the reminder that viscoelastic materials turn mechanical energy into heat. Good to know.
In audio, one of the sources of vibration is the very thing you are generating- the sound. This poses problems that are unique in application.
Even if you doubt the significance of vibration control for most components, you must see the benefits for analog equipment.