Speaker Break In
James Lehman wrote:
I live in Northeast Ohio. We have weather here; air conditioning, heating.
Room temperature is hardly anything constant.
Actually, the term "room temperature" IS fairly constant. It's
not the temperature at any given moment of any given room,
as you seem to infer in earlier posts, but refers to a de facto
standard. A google search of "room temperature" does NOT,
as implied, bringh forth hugely varying results, e.g.:
"Room temperature, in common usage, is taken to be
roughly 20-25 degrees Celsius (68-77 degrees
Fahrenheit, 528-532 Rankine, or 293-295 kelvin)."
"nominal room temperature is 72 degrees Fahrenheit,
22 degrees Celsius)"
And there are many, many more references that suggest the
same. One sees reference to "room temperature super-
conductors" and th like, and they all refer to the general range
of about 21C or 70F, with a small variance thereabouts.
More accurate would be to use what's refered to a "STP,"
or Standard Temperature and Pressure, which is defined
as 20 celsius and 1 standard atmosphere.
But, to those experts in the field of loudspeaker and
acoustics and those familiar with the concepts all
understand the term "room temperature" to mean
20-22 C. I have never once heard an argument among
practitioners about one person's concept or room
temperature vs another's.
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