not sure if this is what your looking for;Grainger Industrial supply,Mounts and vibration control,
Springs for homemade isolation stand
I want to suspend my granite top from my Sound Anchor rack w. some springs to create an isolation stand. I have about 100 -200 lbs of equipment on the granite top including a turntable. I was wondering if anyone can recommend a source for the springs that can support the weight & control resonance.