Springs under turntable

Mijo
To be fair we could be talking about two different types of concrete floor here.

You have the solid concrete floor like mine that is sitting on bedrock stones, dirt, whatever etc.
Then you have the concrete floor that is a platform so to speak and is suspended.
See link just as a FYI.

https://thermohouse.co.uk/blog/suspended-floors/

You will get two different results from the two different types of concrete floor.

Actually all concrete does is alter, not eliminate, vibration.

First up, my concrete is a fully sunken basement. Dead as a mountain. It’s not a suspended concrete/rebar floor where I can imagine some vibrations. However, there is NO comparison with my basement and a suspended wooden floor and more importantly, wood/sheetrock walls.

Millercarbon, glue an accelerometer to you garage floor and record its output while you start up your car, rev the engine and drive in and out. Please tell us what you get!

what you get is a vehicle suspended on... wait for it...springs! And tires, with rubberized engine mounts (some are even active), and you probably get almost no vibration?
Am I close?

Okay, I’ll admit I am being cheeky, please forgive me. I know, I know, smart alec post. Just shake your head an smile, I mean you no injury.

Perhaps try a block of wood (to protect the concrete) planted firmly on the concrete and give it a good tap with a hammer?

@toetapaudio- Are you using slate on top of the springs as a platform for the roller bearings which either support the component directly or through another shiny surface that allows the most free movement of the component?
Are you using marble on top of the Ingress roller bearings? If yes then did you face any ringing issues?
Thanks.

Right, that's the problem with concrete and stone, they ring. They are not inherently highly damped materials. What sounds great with a certain system at a certain level may not always sound so great as it gets better. With mine the problems with concrete and stone only started to sound like problems within the last couple of years. Before that it was like they were providing a solid foundation of impact and slam for bass and dynamics for midrange and treble. Then as things got better it gradually became more and more apparent the "contribution" they make is ringing. They add a certain hardness and glare. No getting around it. 

Concrete (and stone) being massive and stiff makes for a great platform or base on which to build. But they are not that great in and of themselves. Vibrations travel faster through hard high density materials like concrete than through soft low density materials like wood. That's just basic physics. So the fact concrete moves less at low frequencies really only makes the high transmission rate of higher frequencies all the more obvious. 

It just might not be obvious now. But it will be, if you go far enough. Then you will be ready for springs. They are so cheap and easy to do though its hard to see why anyone would want to wait.