Equipment Rack

I would love to use footers to help isolate more of my components from the effects of outside low frquency noise but am not convinced by this concept of a certain shape being a "mechanical diode"at the frequencies in question and given the vagaries of different loads on the footer

Could you provide a link to a reference for those of us not deep into seismic science? I tried searching but could not come up with anything.

Would be great to have an alternative to the spring based solutions I am currently using

If it were actually true that the pointed tips of cones and other pointy footers prevented seismic vibration from coming up into the component then why are there so many advanced seismic isolation devices around, not only the ones supporting scanning electron microscopes but the ones in laboratories and universities around the world? Why wouldn’t they all just use "mechanical diodes?" Wouldn’t it be easier and cheaper? And why wouldn’t LIGO, the physics experiment designed to detect gravity waves, also use mechanical diodes in it’s vibration isolation, at least in part of it’s isolation system? Why does LIGO, you know, the project that DID observe gravity waves last year, the ones produced by a merger of two black holes, due ENTIRELY to the effectiveness of it’s seismic isolation system, use springs and pendulums and other advanced vibration isolation systems and NOT mechanical diodes? The answer is that mechanical diodes are not effective as a seismic vibration isolator whereas mass on spring systems are. That probably explains the plethora of advanced isolation devices that have been introduced into the audiophiles market the past twenty years. How many Vibraplanes have been sold since it was introduced twenty years ago? Heck, gotta be close to 10,000.

Necessity is the mother of invention.

Cheers,

Geoff Kait
machina dynamica
give me a strong enough spring and I’ll isolate the world

Coming from California I can truly understand isolation , we are not dealing with earths vibes. In this hobby we can effectively isolate and even better drain/remove internal noise . If you have turntable rumble or a needle bouncing due to wooden floors you must isolate that component.Now that you have isolated your components you are storing ALL internal noise and energy from tubes,transformers ,etc.Now let's remove all of the internal noise, vibration without total isolation.Open the drain and let it go.Wow this is better than a high dollar component change.After 10 + years of using AUDIO POINTS I am able to enjoy the full potential of my components.I can now enjoy the music in a more LIVE and realistic way.Only ridding the internal noise will bring the live performance to you.Your system has way more potential than you even know.Trust your ears, audio points are keepers.I have absolutely no affiliation with this company whatsoever.I was fortunate enough to borrow a few thing from a friend.Boy was I skeptical.Voodoo,snakeoil,whatever.This stuff actually works wonders above other products.If you can A/B against your stuff you will be amazed.You do have to let it settle a couple days or so.When removed you will be highly disappointed.This is my experience. Hear what you already have, you might lose that high dollar upgrade bug.       Happy listening,Rick W.