Suspending all cables and power cords above the floor is always a good idea. Suspending them from eye hooks in the ceiling using thread, using a rubber band on one end, will provide very good isolation for the suspended cables and cords. This suspension of cables and cords illustrates the deleterious effect of vibration on the audio signal per se as well as on the electrical power coming into the system.
By the same token the Enid Lumley cable tunnels of yore provide the same sort of protection against vibration and static fields. I.e. Cables suspended by string inside treated tunnels constructed with long sections of three 2x4s, two sides and a top 2x4 with eye hooks on the underside for suspending the cables.
A skeptic would have to be exceptionally hard headed not to see that vibration is bad for the sound wherever it is found in the audio system, no?
The only good vibration is a dead vibration.
geoff kait
machina dynamica
give me a stiff enough spring and I’ll isolate the world