The Tacoma Narrows bridge collapsed twice. Neither time due to being suspended. Both times due to wind vortex. Wind blowing through the Narrows creates a low pressure on one side, causing the bridge to first vibrate up and down and then twist slightly. The twist creates low pressure on the other side. The twisting of the bridge increases until failure. https://www.youtube.com/watch?v=OrqdFxpM_N4
If you go looking for answers to problems it helps to find those who actually have the answers. In cases like this they tend to be engineers. Springs do work great, you got a good tip to go read the turntable spring thread. Springs however have the problem of resonance. Without damping they can sometimes create as many problems as they solve. A lot of things are like that. See for example all the ideas above.
So springs are a big part of the answer. But they need to be damped. The trick is to engineer just the right amount of damping. Townshend Pods are designed to do exactly that.
My rack is on a suspended wood floor. It is massive, because mass itself is one means of controlling vibration. Mine uses a combination of concrete, sand, and granite, with carbon fiber. But even this is not enough. Springs were a big improvement, and Townshend Pods the best improvement of all. What exactly will be best in your particular situation depends a lot on your particular situation. I can tell you though you can stomp around all you want in my room the woofers move only to the music.
There are many possible solutions to your problem. They all start with first understanding exactly what the problem really is: vibration control. Pods are the easy fix. But there is a lot more you can do to go even beyond that, if you want. https://systems.audiogon.com/systems/8367
If you go looking for answers to problems it helps to find those who actually have the answers. In cases like this they tend to be engineers. Springs do work great, you got a good tip to go read the turntable spring thread. Springs however have the problem of resonance. Without damping they can sometimes create as many problems as they solve. A lot of things are like that. See for example all the ideas above.
So springs are a big part of the answer. But they need to be damped. The trick is to engineer just the right amount of damping. Townshend Pods are designed to do exactly that.
My rack is on a suspended wood floor. It is massive, because mass itself is one means of controlling vibration. Mine uses a combination of concrete, sand, and granite, with carbon fiber. But even this is not enough. Springs were a big improvement, and Townshend Pods the best improvement of all. What exactly will be best in your particular situation depends a lot on your particular situation. I can tell you though you can stomp around all you want in my room the woofers move only to the music.
There are many possible solutions to your problem. They all start with first understanding exactly what the problem really is: vibration control. Pods are the easy fix. But there is a lot more you can do to go even beyond that, if you want. https://systems.audiogon.com/systems/8367