An isolation platform for 10 bucks .....
1 large paving slab (cement, 2 inches thick)
1 large block of foam 3+inches thick (density should be so that the concrete block compresses the foam to about 1/2 its original thickness.
Place slab onto foam and turntable onto slab. This will remove any acoustic low frequency feedback into the table. It's ugly, but it will demonstrate whether isolation is the answer. If isolation is the answer you can spend more $$$ to search for a prettier solution if you or WAF requires a prettier solution.
1 large paving slab (cement, 2 inches thick)
1 large block of foam 3+inches thick (density should be so that the concrete block compresses the foam to about 1/2 its original thickness.
Place slab onto foam and turntable onto slab. This will remove any acoustic low frequency feedback into the table. It's ugly, but it will demonstrate whether isolation is the answer. If isolation is the answer you can spend more $$$ to search for a prettier solution if you or WAF requires a prettier solution.