Isolation platform for the power amps

Decoupling and coupling is not rocket science. The coupling is for draining off medium and high frequency induced or residual vibration from the component/system. The decoupling is for attenuating very low frequency seismic type vibration transmitted from the floor to the component. Since no single mass on spring layer is a perfect isolator (i.e., low pass filter) you can cheat a little by building two mass-on-spring layers, separated in resonant frequency Fr so they won’t interfere with each other. This usually means using high mass in the construction of the dual layer stack - e.g., slabs of granite or bluestone.The high mass ensures a very low resonant frequency for the bottom layer. Then the top layer is a snap.

Hee hee, I never said it "was", rocket science. Yet I don't see it often enough. But you can also use the high mass layers as differentially sequenced frequency attenuators by utilizing different strata's with their own specific characteristics. Unless you just "Really, really", like rocks, granite ect... Me? I like shiny things.

If using sequenced high mass layers was effective I’m pretty sure the LIGO project to detect gravity waves would have used them. What they did use, in fact, was sequenced mass on spring layers. The advantage to bluestone and granite for DIY audiophiles is low cost and effectiveness, due to high mass and stiffness. That’s why the big boys like Newport and other isolation platform manufacturers use large granite slabs for the top plate of their larger isolation platforms. Very low frequency seismic type vibrations, the most harmful ones, the ones that excite 😛 turntable natural frequencies circa 10 Hz to 15 Hz cannot (rpt cannot) be addressed without mechanical low pass filters of some sort. Performance of mass on spring systems is all about high mass and low spring rate. It’s rocket science.

Uh huh, You mean the "Big boy's", whom still cannot decide whether gravity is actually a wave or particle "effect",? Let alone prove it? And there's a guy in the corner shouting, "It's the wave effect (on) particles!", Those guys?
     Please don't put all your eggs in one basket mister...
    Yeah, I DID work for NASA too. That and 50 cents will get me a cheap cup of coffee.

 
jollygreenaudiophile2
Uh huh, You mean the "Big boy's", whom still cannot decide whether gravity is actually a wave or particle "effect",? Let alone prove it? And there's a guy in the corner shouting, "It's the wave effect (on) particles!", Those guys?

Huh?! Gravity is neither a wave or particle. A gravity wave is simply a manifestation of gravity. I trust you don't think waves in water are particles.