In article , Bob Latham
wrote:
In article , Jim Lesurf
wrote:
In article , Bob Latham
wrote:
Well yes I'm sure it was microphony I was just amazed at how great
was its effect on solid state devices.
Whereas I am in the situation of accepting that you might be correct
in your report, but on the basis of doubting it was microphony. :-)
I'd be interested to hear a better explanation.
Well, so would I. :-)
However the point I was making was that I find it implausible that it *was*
microphony (although possible), but to accept your reports as reliable this
implies it would be due to something else.
One hypothesis is that it might be due to the background audibility of
mechanical hum/buzz from the amplifier. The level and spectrum of this
might well depend upon depend upon how the amp was physically supported.
I'd expect the effect to be small, but it may well be far higher than
microphony in a solid-state amp unless the amp had one or more components
that were unusually (in my experience) sensitive to vibration.
The level of buzz may well increase as you demand more power from the amp.
Thus although this will can be expected not be obvious when listening to
loud music I can't absolutely rule out it having an affect upon perception
without suitable tests, figures, whatever.
My point, though, is that the above is just an example. I was trying to
illustrate that the process of:
A) assuming the effect was microphony.
B) ruling out your report as implausible as microphony should be very low.
was not necessarily sufficient to dismiss your report as unreliable.
My difficulty is that the explanations I have thought of seem dubious, but
I may be missing something... So, you may be correct in what you report, or
may be mistaken, but I can't be sure. I can doubt, but accept that doubt is
not certainty. :-)
Slainte,
Jim
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