Quote Originally Posted by pctower
Well, first of all, as for jj, I read his posts very carefully. I also corresponded directly with him. At one time I had his resume which he had pointed me to on the web. Unfortunately that link no longer exists and I didn't save it. Suffice it to say, he had tremendous experience. That doesn't mean, and I would guess he would be the first to say it, that he was necessarily right about everything.

As for outside research, I have posted numerous links over the last two years. Probably I'm second only to you in this respect. I must say that not once when I would post links that didn't toe the politically correct line of most regulars here did I not receive a whole rath of criticism.

Here's a couple I may have over-looked. First, you and others have repeatedly accused cable companies of avoiding DBTs. Here's one link you might want to look at:

http://www.wireworldaudio.com/compare.htm

Many of your fellow-travelers, including people like MM, I believe have at least been flixible enough to express doubts as whether reliable amateur home DBTs are even possible. Perhaps the comparator might go some distance in at least permitting a type of home test that might be meaningful.

Here is a paper from one source (http://www.anstendig.org/) that concludes that AB testing has absolutely no validity in audio comparisons.

See: http://www.anstendig.org/ABTesting.html

Here's how they approached a comparison of two different cables:

http://www.anstendig.org/AudioCable.html

As for quick switching, look at the conclusion of the following report. He find's no evidence that quick switching is not the "gold standard for audio research", but he leaves open the possibility. In other words, unlike others I need not mention, he maintains an open mind:

http://216.239.53.104/search?q=cache...ind+test&hl=en

Here is a post from another forum that discusses some of the complexities in designing DBTs:

See: http://forum.ecoustics.com/bbs/messages/5/6528.html

In fact I found that entire thread interesting. I doubt anyone else would have the patience to wade through it and it breaks no new ground. But it certainly does encapsulate much of the Great Cable Wars in one thread.

Finally, as for doing my own tests, I have made it clear that that's not my bag. My soundroom is for pleasure. I did not design it to be a science lab.

As a lawyer, I must frequently explore the validity of tests and supporting scientific evidence for opinions given by so-called "experts". That's what I'm accoustomed to doing, and that's what I try to do on these boards. Others, who enjoyed their high school and college science lab classes (I did not) are welcome to set up labs in their homes and test away.

I am familiar with the Wireworld devices. One must be careful with it as it is manual and hence if the operator is with the listeners, it becomes single blind.
Interesting that when Tom Nousaine asked for data from them on DBT wire results, Wireworld disappears into the emptyness of space, no data to be found. I wonder why that is.
I suppose one could use their switching, somewhat expensive.

Anstending didn't publish any references that I saw, just assumes a/b comparison is only for visual senses. No memory in visual senses? That in itself needs a journal reference that is missing. It is all relative, after all, isn't it? If you compare the color on your wall to the chip in th epaint store, it certainly requires memory. But, if you bring it to the room, the time is reduced, not eliminated. I think you need to scrutinize some of the links you post for the ansurdity factor, no?

I am sure the whole of psychology, acoustics world would be interested in their new discovery. Sure would make things easy and less expensive in developing anything audio.

I guess JJ wasted his tenure at AT&T all that A/B testing for not or Toole's 25 years of research for not and the ongoing research in Canada,
http://www.crc.ca/en/html/aas/home/e...n#recent_tests
or Sandia Labs
http://www.sandia.gov/LabNews/LN04-2...tor_story.html

As to your last link, it is interesting, especially since he didn't read your link to Astending A/B is not valid

If he published a journal paper, He may be right about what he needs to consider. Certainly not at home. And certainly, the simple comparisons that audiophiles use have no place in discussions hereafter.