As Sean says, assuming units remain within specified tolerances, maximum theoretical drift between a pair of SB3s is 300ms/hr == 6 ms/min. For two sets of speakers in different rooms, 50ms may be a good estimate of the maximum acceptable error. Our common listening case is somewhere approximately half way between two sets of speakers, in which case I think that 30ms tends to be about the maximum acceptable error, which could occur within 5 minutes and will very likely occur within half an hour, listening to internet radio or the like.
But 6ms/min is for SB3s. SC will also sync with SB1s (not so well) and SliMP3s, and also with software players such as SoftSqueeze and Squeezeslave. I suspect (but don't actually know) that the older hardware may not have such well-specified crystals. And, in any case, software players are generally dependent on the crystal of the computer's sound card: I have observed drift rates of worse than 1ms/s (== 60ms/min) with such cards. Finally, as you noted in you original post, SC attempts to get all players to start at the same time. Sometimes, problems with network latency (more likely with wireless networks) or within the computer running SC, may mean that they do not all get the start command in time, in which case post-start adjustment is necessary (there are other techniques which can be used here and there are good reasons why the current technique is used). I hope this helps. Alan. -- awy ------------------------------------------------------------------------ awy's Profile: http://forums.slimdevices.com/member.php?userid=7480 View this thread: http://forums.slimdevices.com/showthread.php?t=47344 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
