Music Today
On Wednesday, January 29, 2014 7:30:20 AM UTC-5, Oregonian Haruspex wrote:
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The recording industry was always about churning out the lowest quality=
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noise on the cheapest media possible. There are so few exceptions that=
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they could all be named in a breath.
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Oh the poor music listener, never knowing the pleasure of hearing their=
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pablum on Class A tube amps!
OK - from a lurker out in left field, rendered as an opinion, and looking f=
or feedback:
a) Sound is about moving air.
b) Moving air requires energy.
c) Moving a lot of air requires a lot of energy.=20
d) Sitting mid-orchestra at a lively (and live) rendition of the Saint-Saen=
s organ symphony puts one in the middle of a great deal of moving air.=20
e) To duplicate that experience at home in a moderate sized room will requi=
re considerable amounts of energy to achieve notwithstanding speaker effici=
ency.=20
f) A good recording of the Saint-Saens organ symphony will have a 30dB peak=
-to-average variation, very likely 40dB from the most quiet to the most lou=
d few moments. So, 10x10x10 =3D 1,000. The peak wattage required from the a=
mplifier will be 1,000 x the requirement at the quietest passage - that is =
if there is to be no clipping - soft or otherwise.=20
How is this done (reasonably) using Class A tubes?
And I will be the first to admit that Class A tubes may be the absolute *id=
eal* for the likes of Gregorian Chant, with a P:A of perhaps 10dB, if even =
that. Or about any solo instrument other than an organ or concert grand pia=
no. But for fully orchestrated pieces of significant dynamic range?
Also admitting for the record that I am a monster-amp person, speaker effic=
iency be .....=20
Peter Wieck
Melrose Park, PA=20
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