Isolation/coupling: basics?

Dmitrydr... My source electronics are located in a massively constructed alcove in my listening room. If I have any vibration at that source equipment it is acoustic. The phono turntable has vibration-absorbing feet.
My power amps are in the cellar.

IMHO vibration is not a significant problem with SS equipment. By "not significant" I mean that a problem would be hard to induce, and easily corrected. Others disagree. I am sure we all (well most) agree that tube gear is more problematical than solid state.

What you describe as the error correction method is not how it is usually done these days. You assume that the data receiver DETECTS that there is an error, and requests retransmission. That works in some cases, however CD's (and most other devices) use something called a Reed-Soloman code. The transmission includes redundant information, basically each bit of the data word is spread across a number of bits in the transmission, so that if one or more transmitted bits are screwed up there is still enough information to calculate what all the data bits should be. No time-consuming retransmission is necessary.

Reed-Soloman error correction is vital for applications such as sending video back to earth from a space probe around Jupiter. Requesting retransmission would be impractical with a round trip communication time like 40 minutes. The Reed-Soloman code can be implemented with different degrees of redundancy in the transmission, deprending on what the bit error rate is expected to be. I seem to remember that for space probe applications it is not unusual to transmit 150 bits or more so as to be sure that one bit is correct.

And don't be forgettin' sesimic vibration, due to continuous motion of Earth's crust, peak energy around 1-2 Hz.

Geoffkait...And then there are land tides. Yes, the earth's surface rises and falls several inches each day. This is 0.0000116Hz. Put that in your subwoofer and smoke it.

Then you will have to live with the land tides, eh?

Eldartford, just to make sure, are you sure Reed-Soloman error correction is implemented in regular CD players? It seems that CDP and long distance signal transmission are very different applicaitions; this method seems to be good when you need to recover the most possible info when retransmission is not possible, but not when you need to get absolutely 100% of information or to report a error. So, I'm not really sure this method is being used in data storage techniques, when re-read attempt doesn't cost much. When CDROM reads a data file (I'm not sure if the data is retrieved using Reed-Soloman error correction or not) and detects CRC error, it does perform re-read on lower speed. Just because of that it is possible to get a bit-perfect copy of CD using digital audio extraction, which is generally impossible using audio CD player.

Whoever is right, it leads us to conclusion that CDP is error-protected enough to be immune to vibration too. But it conflicts with a practical experience: people claim, at least, changes in dynamics when isolation/coupling device used...