Your last post had at least a little bit of content. Congratulations. GuyDebord;276702 Wrote: > > What data?
Electromagnetic and electronic, plus acoustic, psychacoustic, and a little of the biology of human hearing. We know very well both how to predict and how to measure a speaker cable's effect on an audio frequency electrical signal. We also know what the thresholds of human hearing are. When the effects of two cables are far below those thresholds, we know the two cables will not produce an audible difference in the sound of an audio system. That knowledge is corroborated by the fact that every single controlled listening test I have ever seen reported has agreed with the theory (which means they were just about all null, because you have to go to ridiculous extremes to make them not). One I recall which was positive was a (non-level matched) comparison between some very long length of 20 or 24 gauge lamp cord and something else (I forget what, but I could dig it up). Even there the differences were not easy to perceive and would probably have gone away had the volumes been matched, and the fact that the difference was audible was fully in accord with expectation based on theory. So you see, it is not the case that cables never matter - if you decide to use 50 feet of 24 gauge lamp cord for speaker cable you might degrade your sound. If you're a recording engineer and you need to run 150 feet of cable to a mic somewhere, you need to make sure you use an appropriate cable, and guess what - you figure that out by using the theory described above. If you're setting up speakers in your living room, that same theory tells you $5 monoprice cable is more than adequate (if a bit ugly, to be honest). You are perfectly free not to believe any of that, but in that case the burden of proof is quite squarely on you. > I hold a professorship in the Netherland's top technical University, In what subject, may I ask? I don't think my arguments are so weak they need to be propped up with credentials, so I'll not reciprocate. > and this university is world famous for many types of scientific > research including the research unit that Prof. Van den Hul frequently > visits. And his scientific facts deal with the many presentations of > cable compositions (conductors). Among many other interest in > conductors he has continued to expand his knowledge in Audio cables, he > invented linear structure carbon cable (non metallic) used in many > recording studios for their properties, he has developed hybrid metals, > composed dielectrics, and many more things. and he has scientific facts > to prove the sound difference of each cable's properties (geometric and > material). Van den Hul is a cable manufacturer, one that charges well over 3,000 euros a meter for "high end" models. Clearly a credible and unbiased source. Please show me a controlled listening test result where anyone can distinguish those $5,000 cables from a radio shack special, or even one single computation or measurement in which the parameters of the cables can be shown to make a difference above known hearing thresholds. I flipped through the pdf you linked to - and big surprise, not a single number, plot, estimate of the size of these effects, audibility test, or anything else with any relevance. Just a bunch of silly statements about humidity and its effect on conductors. -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=44124 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
