I also struggled with isolation & coupling concepts for quite awhile until I read George Merrill's little turntable setup pamphlet, which explains this in beautiful simplicity.
Basically you want to have separate rigid shelves for each component, isolated over your equipment rack's shelves via Vibrapods, Sorbothane pucks etc. This provides a nice "quiet" sink to which vibrations coming from the component resting on that shelf can be coupled, via spiked footers (various cones etc.).
Thus the "sandwich":
Component on top - possibly mass loaded above if desired
Coupling cones
Shelf
Isolation footers
Rack shelf
Basically you want to have separate rigid shelves for each component, isolated over your equipment rack's shelves via Vibrapods, Sorbothane pucks etc. This provides a nice "quiet" sink to which vibrations coming from the component resting on that shelf can be coupled, via spiked footers (various cones etc.).
Thus the "sandwich":
Component on top - possibly mass loaded above if desired
Coupling cones
Shelf
Isolation footers
Rack shelf