All you need is a couple inches of sand in a box. Pack the sand, put something on top of the sand- can be one big sheet of MDF or four small ones, hardly matters- and put the turntable on that. The footers you have may work better under the sand box, or under the turntable, you will just have to try them to see.
If you have the space and the funds you can do even better with a granite machinists plate, which is what my table is on. Between the granite and the concrete rack is an inch of sand. On the bottom shelf the phono stage is on sand and if you look close you will see the square MDF footers the phono stage is on. Pic #7. https://systems.audiogon.com/systems/8367
The sand is mixed with a small amount of mineral oil that helps it pack smooth and stay put without dust. Dirt cheap, tried and true.
If you have the space and the funds you can do even better with a granite machinists plate, which is what my table is on. Between the granite and the concrete rack is an inch of sand. On the bottom shelf the phono stage is on sand and if you look close you will see the square MDF footers the phono stage is on. Pic #7. https://systems.audiogon.com/systems/8367
The sand is mixed with a small amount of mineral oil that helps it pack smooth and stay put without dust. Dirt cheap, tried and true.