I have a turntable atop a 5 ft tall rack that sits on a carpeted suspended wood floor. I do not have problems with footfall or feedback. In order to make the tall rack stable and more rigid, I put a cleat on the wall and then used angle brackets to secure the top portion of the rack to the wall. There is no shaking with this setup. The rack is no longer made; it is a custom sized Zoethecus rack.
Racks - what’s awesome without impacting my kids college plans?
My search showed the last significant rack discussion to be years ago. I’m thinking 5 shelf, TT on top, upright style, without costing more then I spent on an amp... I’m good with adding sand, even fabricating a granite shelf or two. Any suggestions?