I grow tired of this techno-babble. True coupling would be to run a long I beam below your equipment into bedrock. This would add the mass of that bedrock to your system mass. There is no real isolation as everything you use has a resonant frequency and your choice is where you want it. This is true for air and magnetic isolation also. In fact coupling is also isolation but with a very low resonant frequency.
Most of my equipment is coupled to my wooden floor, but my speakers have a soft cushion between spikes below and above. My experience is that you need to try both solutions and choose what is best sounding.
Most of my equipment is coupled to my wooden floor, but my speakers have a soft cushion between spikes below and above. My experience is that you need to try both solutions and choose what is best sounding.