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Do equipment stands have an impact on electronics?

Mechanical grounding or isolation from vibration has been a hot topic as of late.  Many know from experience that footers, stands and other vibration technologies impact things that vibrate a lot like speakers, subs or even listening rooms (my recent experience with an "Energy room").  The question is does it have merit when it comes to electronics and if so why?  Are there plausible explanations for their effect on electronics or suggested measurement paradigms to document such an effect?
agear
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geoffkait's avatar
geoffkait
23,365 posts
 
Agear wrote,

"I have a few thoughts. First, the correlation between jitter and digital fidelity or musicality is murky. From personal experience, I have owned DACs with high and low jitter and musical enjoyment does not always track with specs. I know people argue all day about what thresholds of jitter are audible, ..."

Well, any damage to the music signal done in the CD transport would show up at the speakers even if the DAC was low jitter. You cannot separate them. The DAC will process whatever signal is sent to it. Besides, the transport and DAC are both subject to internal and external vibration just like everything else. I.e., the transport and DAC must both be isolated and damped. Jitter in CD transports has many causes and there are other causes of damage to the music signal other than jitter.
agear OP
1,362 posts
 
All the giggling schoolboys apparently like each other's puerile and remarkably unfunny jokes. What we have here is not exactly the faculty of Harvard. Did someone forget to put out the Roach Motels again?

You missed my innuendo which is not surprising since you attended my alma mater prior to the admission of women and/or people of color.  The primary selection criteria was a whiteboy with a pulse and not academic aptitude.  
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ethan_winer
57 posts
 
I looked at this article:

http://www.industrial-electronics.com/DAQ/optical_discs_digital_data_and_vibrational_jitter_effects....

It absolutely does not show that isolation doohickeys under CD players have even the smallest value. Yes, blasting 105 dB from a loudspeaker directly at a CD player might create a measurable disturbance, but not audible given the jitter artifacts are at -130 dB. That's more than 30 dB below the "hiss" noise floor of a CD, which is itself inaudible. Moreover, putting your player on a platform won't stop the acoustic vibration from the sound in the air reaching the player! I made that point clearly in my Loudspeaker Isolation article which none of you apparently bothered to read. So here it is again:

http://ethanwiner.com/speaker_isolation.htm
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