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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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if the shelf and equipment weigh 30lbs. The tip of the spike is loaded to maybe 10,000 ib/square inch

Posted by 3+4=5 on May 17, 2017 at 11:47:32:
Loading a tiny spot makes it seemingly 'immovable' so it is locked together.
The vibrations just go right through the spot. But maybe fewer in certain vectors.
If you wanted the same tightness of a joint in a nut and bolt.. Jeez. Plus the spiked thingy is actually easy to move, remove and move around, vs some super heavy duty solid system.
All the fancy BS about 'vibration' and 'draining' with points is all audiophile drivel. The real great thing about a point holding something up is it acts as if it weighed several tons at the point.. so that joint is not going to have any inherent vibration between the point and the surface it rests on.

IMO a combination of dampening and mass are the best to think about in a way to hold up stuff.
I use a few pointy thingies under the patio block my amp is on. And under the 80lb power conditioner on the floor.
For my rack I use cheap as dirt butyl rubber chemical bottle stoppers, size 10. $1,25 each. I own over a hundred of them. I use them EVERYWHERE.

But I am a cheapskate.