Interesting… I was under suspicion that only Vibraplan allows LF decoupling but here is another California company the offers an alternative solution.
The Vibraplans did work fine and the principle was very simple, I read what the Minusk people say:
“Nano-K® vibration isolators employ a revolutionary concept in low-frequency vibration isolation. Vertical-motion isolation is provided by a stiff spring that supports a weight load, combined with a negative-stiffness mechanism (NSM). The net vertical stiffness is made very low without affecting the static load-supporting capability of the spring. Beam-columns connected in series with the vertical-motion isolator provide horizontal-motion isolation. The horizontal stiffness of the beam-columns is reduced by the "beam-column" effect. (A beam-column behaves as a spring combined with an NSM.) The result is a compact passive isolator capable of very low vertical and horizontal natural frequencies and very high internal structural frequencies.”
Well, Vibraplans needed mass and a large footprint to be effective. If the Minusk concept works then it might be as small as 5x5?
Interesting… what somehow will come up with a tube socket with imbedded Minusk conception …
"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche