Agree there is a lot of sand in the air in Beijing, and doubtless some gets into my ears. I guess my perspective differs from yours & we have to agree to disagree. But with current flowing at close to the speed of light in cables (3x 10^8 m/sec) and sound at around 343m/sec (at 20C) I always come back to the issue of delays (eg due to skin effect in cables) in electrical circuits, versus delays due to sound attenuation in air. For example, since the speed of sound varies by about 0.5m/sec per deg C, the above mentioned 50 nanosec 'skin effect' sound delay has to be compared with a similar speed of sound difference between your two speakers caused by a temperature difference of just 0.1 x10^-6Deg C. (1/10 th of a millionth of a deg C) between path A and path B. On this basis if you breathed in the wrong direction (at speaker A), you'd influence the speed of sound time delay much more than any skin effect in your cables. Ok, you can play with the numbers and maybe someone needs to recheck my maths, but you have to come back to the ratio of speed of sound in air to speed of electrons in copper (1/874635). I agree skin effect can have a physical impact, but is it an audible effect, does perhaps the temperature stability of the room and where you are sitting have more to do with it?
Then you have to worry about the attenuation of high frequencies in air. About 0.03xF db/meter. (F in kHz). Maybe not a big effect in a normal house, but ball-park i'd guess more than the attenuation of high frequecies due to the skin effect. Cheers, dan -- chinablues ------------------------------------------------------------------------ chinablues's Profile: http://forums.slimdevices.com/member.php?userid=7955 View this thread: http://forums.slimdevices.com/showthread.php?t=29025 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
