"ludovic mirabel" wrote in message

Wrong again. I do love this information. I quoted it with the full
results from JAES in the opening letter of this thread. Using this
wonderful listening room Sean Olive ( Mr. Toole's cowoorker) had 300
listeners listen double blind to 4 loudspeakers two of which had
ragged frequency range.
And you know what (rerepeat just for you!) majority failed
abysmally to distinguish between speakers in a formal double blind
test, Another NEGATIVE DBT,
And you know what else? The same majority that failed *testing*
preferred full range speakers. As long as no one bothered them with
the "test". Don't believe me? Read the article and/or ask Sean Olive.
I did.

I suppose a good, objective DBT would be on equipment that Stereophile
reviewers, by their own admission, have claimed made an instant difference.

Apparently, in the May 1990 issue of Stereophile, JA did some tests on tweak
items like the green marking pen and even though his instruments showed no
difference before and after the tweaks, his ears were "flabbergasted" by the
pen.

Even though he wrote of his measurements that: "most of these tweaks would
appear to border on voodoo, with no basis in fact...", he goes on to write
that with the green pen "soundstage depth increased, mids and highs were
smoother with less grain, and the presentation became more musically
involving."

I haven't got a copy of the May 1990 issue, but I picked up this information
at http://www.technobeat.com/OLDIES/GREEN.html.

It's quite possible that these tweaks did make an audible difference, after
all CDs in the late 80s and early 90s were quite shoddy analog transfers
that actually carried ratings like AAD, ADD and DDD.

However, it would be interesting to see a DBT/ABX test of the green pen
phenomenon.