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In Reply to: Yes, good idea! posted by John Elison on July 10, 2011 at 08:29:23:
Hi John, I think I mentioned this the first time you posted your data, and I am sure you see it too. The differences among your test LPs are not random. The AT and the Cardas are nearly spot on and agree with each other, pretty much. On the other hand, all the Denons and all the CBS test LPs show results that are similar to one another, there is a huge 11 to 17 db difference, with the L channel numbers being higher. This to me suggested that one needs to posit only two "kinds" of test LPs. But the question is which is the best kind to use. One way to answer that is to ask whether you listened to music with the azimuth set so as to give nearly equal crosstalk with either the Cardas or the AT test LPs vs the other two brands of test LPs.
Also, when I read your first post, my first conclusion was to question the Fozgometer, rather than the test LPs. But now I see your point, because the results fall into two discernible groups, perhaps the Foz is telling us something about the test LPs, rather than revealing its own shortcomings.
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Follow Ups
- RE: Yes, good idea! - Lew 01/22/1314:37:05 01/22/13 (0)