Springs under turntable

Hello,
It appears that this thread has gradually started moving away from the central discussion point, isolation... In order to get it back to the track let me solicit feedback on another aspect related to the vibration isolation. After putting springs, inner tube, magnet or what have you in that space how do you measure the effectiveness of the tool beside listening? How do you know that it is isolating in the range of 3-4 cycles and there is no more room to improve? I tried using a few free andriod apps measuring vibration but they don't seem to be accurate. Curious to know about your thoughts/experience on this.
Thanks.

indranilsen, 3 Hz is slow enough you can just count. In poorly dampened systems the turntable will keep bouncing for a while. If it does not bounce that would mean the frequency is way too high.

mijostyn

Cleeds, yes I read tea leaves but most importantly systems like mine are obviously very rare at this point ...

I'm not sure your system is that rare - I've seen lots of systems like yours that included the flapping woofers that you think is inherent to LP playback. But if you're happy with your system, that's all that counts.

Just to be fair to equalisation control here, our sadly departed Al was a proponent of the same and used some form of DBX control and he was very satisfied with it.
I do not remember the exact details of what he used but he did post about it numerous times.
So I would never say never and write it off entirely, just that at this time it is not something I will be pursuing.

You see cleeds, you have no idea either. Of course I am assuming wrongly or rightly, that all of you know what you are listening to. And cleeds, if there is no music by subwoofer cones are frozen dead.

Uberwaltz, if you could hear a proper system it would be the first thing you would be pursuing. 

Radomir Bozevic was a genius. His problem and downfall was that he thought everyone else was up to his level of thinking. He direct marketed his equipment, his instruction manuals were awful and he was not able to provide adequate phone in support although he tried. The TacT 2.2x and it's theater version he TCS remain the most powerful DSP preamplifiers on the market. The only units that are close are those made by Trinnov.
Companies like Anthem and DEQX make units that are relatively easy to use but not near as powerful. They are however very useful in mid Fi situations. In Top systems only TacT and Trinnov need apply at least for the time being. I will take photos of the program in operation to try and give everyone an idea of what is going on.