If using sequenced high mass layers was effective I’m pretty sure the LIGO project to detect gravity waves would have used them. What they did use, in fact, was sequenced mass on spring layers. The advantage to bluestone and granite for DIY audiophiles is low cost and effectiveness, due to high mass and stiffness. That’s why the big boys like Newport and other isolation platform manufacturers use large granite slabs for the top plate of their larger isolation platforms. Very low frequency seismic type vibrations, the most harmful ones, the ones that excite 😛 turntable natural frequencies circa 10 Hz to 15 Hz cannot (rpt cannot) be addressed without mechanical low pass filters of some sort. Performance of mass on spring systems is all about high mass and low spring rate. It’s rocket science.
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- 58 posts total
- 58 posts total