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
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