John Atkinson wrote:

Howard Ferstler wrote:
William Sommerwerck wrote:
I doubt that John ever performed the experiment. I am guilty,
too, of failing to follow through on subjective observations
with controlled experiments.

I forgive you, and, believe it or not, forgive John, too.

Very gracious of you, Mr. Ferstler. Thank you.

I even showed how someone could use their record player to
rather carefully evaluate the feedback. The player
essentially would behave as a microphone that would clearly
determine just how much of an audible problem feedback would
be.

You might want to discuss this phenomenon with Arny Krueger.
When I mentioned on r.a.o. having performed a similar
experiment he was dismissive both of the experiment and of
the implications of the results. (Google can retrieve the
details if you care to investigate.) But that, of course,
might just have been because I was the one who introduced the
subject :-)

John Atkinson
Editor, Stereophile

The turntable-feedback article was in the October, 1984
issue of Stereo Review. Actually, David Ranada contributed
so much to the editing, and also added some additional
options, that we decided to have it be a joint article. I
also published articles in the November, 1976 and December,
1988 issues on using pink noise to subjectively test
components. You all know how much I like pink noise.

Howard Ferstler