Background vibration and your system.

@erik_squires - There has been research resulting in useful products like those from Townshend, SRA, and other companies that many here benefit from. The most prevalent applications have probably been in mitigating vibrations acting on turntables.

On the flip side, IMO there are also products marketed using pseudoscience and/or exaggerated claims, which muddy the water.  As you indicate, the absence of documented research has left the audio equipment industry without consistent/uniform vibration measuring processes and baselines.

Regardless of the application, the principles are consistent and solutions involve various implementations of mass, springs, and damping as presented in this link and this link.  However each application is unique depending on what is being isolated, and from what vibratory source.

In our audio world, springs are successfully used like Townshend platforms or the inner tube discussed earlier, which is an air spring.  Commonly used elastomeric footers are also a form of damped spring. Many audiophiles mass load with brass or other materials, and many types of turntable stands and platforms seem to be successful at mitigating the effects of vibrations. However, without clearer documented research and guidance it is mostly a trial and error endeavor in the audio world.

There is a pretty cheap fix for vibration actually.

Low durometer (about 30) sorbothane pucks...There's a website out there for correct weight distribution on it. Yes,  it will stick and stain if you don't do the following....get a plastic bag, cut 2 pieces of the plastic out of it and sandwich the sorbothane puck between..to prevent staining, etc...Works way better than some vulture priced crap.

I've noticed some big improvements on dacs.

if the tremors  caused settlement/foundation issues, etc, you have other bigger problems besides hifi to worry about, of course.

@deep_333 - I switched from spikes to Herbie’s products, to damped springs and then to these platinum silicone elastomers, which can be easily sized for the equipment or speakers being supported. The springs worked great but the silicone elastomers (I believe at duro 20) provide most of the benefit with improved user convenience, IMO. YMMV

@mitch2  +1

check this out...can’t find the whole vid.

"are clock crystals sensitive?"

https://www.youtube.com/watch?v=suFmFmlZdtc

the best thing one could do really is to ’float things’ on some thick low duro jelly squishy elastomer whatever.

A lot of the stupid stuff that gets sold for hifi ’isolation’ didn’t do anything for the likes of what you saw in this vid. 

@mitch2 I’ve seen research on the reduction of _vibration_ with a variety of devices.  What I have never seen is research on how susceptible a given device is to vibration. 

For instance, put a DAC on a very shaky rack.  Measure the performance.  Now do the same with 110  dB of music playing in a room with a wooden floor. 

I use music as just one example.  If you have a vibration pad where you can simulate shaking at a variety of frequencies and amplitudes that’s fine too, but show me how this DAC starts to become microphonic or distort based on that vibration.

If anyone has links to that kind of research please @ me and let me know.