vibration control

the question concerned vibrating caps and resistors. You are changing the subject in mid-discussion.

This is my first attempt at posting so please approach with caution.

My understanding is that Vibration of any type creates inefficiencies throughout all mechanical, electromechanical and acoustic signal pathways. Therefore why would caps, resistors, circuit boards, wire that are subjected to vibration NOT become affected?

All electronic parts along with everything else vibrates from the three conduits mentioned above within a musical environment so my perception is that even the smallest of electronic parts, chassis, speaker drivers, walls, floors and ceilings are vibrating and are heavily influenced by the effects of ‘Coulomb friction’ which is caused from vibration.

In searching ‘audio’ this paper is the only one that I was able to locate that addresses the phenomenon.

http://starsoundtechnologies.com/coulomb.html

Page 5 and 6 provide some ‘understandable’ and worthwhile information on the subject.

I am a fan of mechanical coupling in audio reproduction, moving resonant energy continuously away from components and speakers and using hard environmental surfaces in recording environments.

I do not follow or agree with the theorems of ‘true isolation’ in trying to avoid or eliminate vibration in audio reproduction and have learned from experience to stay away from most absorptive soft materials and techniques.

Disclaimer: My father works with a commercial company that employs various forms of vibration management so I am biased, have had greater access to knowledge from experience and have applied these principles in recording studios as a testing ground.

Makes a body wonder how the electronics on aircraft, esp high performance military jets, and space craft, like the NASA stuff, work at all. Of course their functions might not be as crucial in space travel as they would be in high-end power amps.

Vibration control and vibration isolation is definitely a big issue for fighter jets and NASA spacecraft and much is done to ensure that vibration doesn't interfere with electronics, most of which provide critical functions.

Rok2id... Retired now, but I worked for 40 years on missile guidance systems.

The hardware is designed to work under extreme vibration. The shaker used to perform vibration testing shakes the whole factory building when in use. The effect of vibration is to induce mechanical faults. Bad solder joints let go, screws come loose, stuff like that. We never see a purely electronic failure, or digital data dropout.

Of course, the requirements on a nuclear armed missile aren't as severe as Rodman's audio amp. What the hell. So we hit the Chinese embassy. Big deal.