Clever and effective. The best frequency is between 2 and 3 Hz. You can tune it by adding mass. If you get it right you should be able to jump up and down indiscriminately. The improvement in sound is also no surprise. If you get a SOTA , SME or Basis you can put the turntable anywhere on anything and it will do just fine. IMHO an isolated turntable is a must.
homemade turntable vibration isolation platform
Out of a couple years of frustration, I irrationally tried to create my own turntable suspended platform to cure two problems. First, footfall would often jar the stylus enough to skip and my music seemed muddy/blurry. The floor bounced enough to make us have to tip toe through the living room. It was getting where I would hate to even play a record. I went searching for tweeks. Ideas abound. Ropes from ceiling, etc. But I live in a yurt. Everything moves, including ceiling beams. Floor works like trampoline (almost). Out of complete desperation, I drilled holes in the top of my component cabinet (double 3/4" plywood) and suspended my turntable on another piece of plywood by bungees from four posts. I got lucky!! It worked fantastically. One could almost jump up and down in the room (my wife tried). AND, a solid bass appeared, soundstage grew a third larger, the clarity was enhanced exponentially. Pure luck I cured my years of frustration and got an indescribable upgrade sound quality besides. After 6 tries I've recreated a free standing unit that works as well. Just had to share.....