Springs under turntable

@mijostyn- What you stated is exactly the issue that I am facing with springs and it is true for any electronics as it is true for a turntable. For any component, if you want to get the resonance frequency to somewhere below 3 cycles then you are working with a. softer springs in general, b. they are loaded to the max around 97-98% of the spring capacity, c. each spring is carrying the same load. Satisfying these conditions underneath any load let alone a heavy amplifier or a very fastidious turntable is going to be extremely difficult. That's why I keep looking for a tool which gives the CG location of a given component and/or something when attached to a spring shows the load that it's carrying.
Without those tools/guidelines embedded in the product even Minus K or Stacore platforms are not going to be very effective....
Beside this load adjustment issue you have to deal with the type of the platform that hosts the component. You need to make sure that it doesn't adversely impact the tonal balance.
It is because of these issues none of the products or ideas on the isolation currently available in the market provide a plug and play solution, in my opinion....
Thanks.

@lewm   They're way ahead of you!

https://www.bidsquare.com/online-auctions/skinner/studio-brushed-steel-rocking-chair-1416477

twoleftears, 800 volts and 250 amps and you should be in great shape.

Lewm, you and none of those other people obviously have not heard a system like this. I would love to have you over for a quick demonstration and don't forget I am a fellow ESL lover. I am talking everything from Beethoven's early string quartets to Nine Inch Nails. If you think your system images now, I can make it image a lot better. If you think you have decent bass now, I can make Ron Carter materialize in your listening room. Any system you have heard was either set up incorrectly or it was using a sub standard unit without the necessary processing speed or resolution.  

Ron Carter is already in my room.... Imaging is so good the sound exist independantly of the speakers....

And "liveliness" is a quality in acoustic linked to among many factors with the reverberation time and synchronisation and participate among at least 5 others characteristics to define the mysterious fact of "timbre" in acoustic...

I dont know if a computer program can modify the reverberation time in a specific room with a specific varied content ....Playing with frequencies he can compensate to a certain degree but using it positively for a set of ears in particular in the perception of timbre, i think that it cannot....

The " liveliness" of my sound result from my playing and work among other factors with this reverberation timing....The guide was my ears.....Ordinary ears by the way.... The myth of bat ears is a bad joke by some to discredit the use of our "biased" ears in audio, ears with which i listen to music without being able to de-biased them to this day...I know that computer formulas can make the room perfect for non biased and perfect ears tough....But not for mine Alas! :)

If someone designed a big void room especially and only for music and for a crowd, a set of law applies very well and straightforwardly...

If someone want to accomodate a small Room with an already disparate acoustical content (furnitures, coofins, books etc) for a pair of specific ears, using these biased ears is for me necessary.....Laws under the guise of computer algorithm will lack something and will miss some fact to work with like reverberation time for a particular set of ears(mine) in a small ordinary room and not for the crowd in a big musical hall....Reverberation time for example cannot play the same role in these 2 different locations....

Liveliness is not reducible to transparency for example....

By the way i am not a scientist, only a nut without money who create his own heaven by homemade device only.....

I succeed to my satisfaction..... :)

indranilsen, The MinusK platform is not that hard to use. You move the turntable around on it until each corner of the platform compresses the same distance. It takes about 15 minutes to get it right. When you order the platform it is made for the specific weight of your turntable. You do not have to deal with spring rates at all. 
My feeling on the subject is straight forward. I will not use a turntable that is not isolated. I would rather buy a well engineered turntable, suspension built in than have to mess around with MinusK platforms and such. There are many excellent suspended turntables from the Sota Sapphire all the way to the Dohmann Helix and Air Force Tables. I think Thorens makes a few at a lower price point. A good suspended table should be immune to everything up to an elephant stepping on it. I can bang the side of my Sota with a hammer and it will not skip and you won't even hear it through
the system.