How to isolate turntable from footstep shake or vibration

@esputnix - I searched through this thread and could not find any mention of Magnetic Feet i.e. each footer uses two magnets positioned to repel each other - the table effectively "floats".

Of course there might be a reason for NOT using them i.e. "directly" on a turntable, so you might want to have them located on a secondary plinth between the the TT and the shelf

Maybe combining the magnetic feet with another isolation technique would provide the nest solution?

Personally, I have not used this type of foot, but considered them many years ago and thought it might be a good solution for very difficult isolation situations such as yours

For more info - read this thread
Magnetic levitation feet | Audiogon Discussion Forum

Regards - Steve

@atmasphere, it sounds more like damping rather than isolation although it probably isolates at certain frequencies. If you want to have some fun put the stylus down on a stationary record and hook your phono stage to an oscilloscope. Then play a sine wave sweep loudly and see what gets through. I plan on doing this with the Sota when I finally get it. 

user510, there are well designed turntables suspensions and not so well designed suspensions. Suspended turntables that have their sub chassis sitting on springs like the AR XA, LP 12 and Thorens turntables are inherently unstable and they tend to oscillate laterally when aggravated. They will skip with footfalls sometimes even more readily than unsuspended turntables. Suspended turntables that have their sub chassis hanging from the springs are inherently stable and want to maintain their resting positions. This category includes SME, some Basis and Sota turntables. They will not skip with footfalls. You can put them on a collapsible card table and they will operate fine without any audible consequence.  

@williewonka , Sitting a turntable on opposing magnets is similar to sitting a turntable on springs and would be very unstable without some kind of lateral support. Hanging a turntable from attracting magnets would be an interesting project. My instinct says it would not perform any better than hanging a turntable from springs but would be a lot more expensive.

@mijostyn - I was thinking more along the lines of actual magnetic feet - not a DIY solution - like these...
Maglev HiFi isolation feet | Solid Air Audio

And the link to the other Agon discussion has more examples of commercially available magnetic feet

I think something like this would be too difficult to DIY 

Regards - Steve