- Posted by

In Reply to:
really? do the math (it's easy!) posted by **mhardy6647**
on February 23, 2017 at 07:46:04:

An issue is, a sound level meter and Volt meter respond to a "short term average" and not peaks. For compressed FM, the instantaneous peaks may be 10 times greater than the average SPL, power or Voltage but many audiophile recordings have 20 or 30dB or more peak to average.

While you can't hear instantaneous clipping as a flaw, when compared to the same signal without it, the without version is more dynamic.

So, lets say you had a P to A of 30dB and you had 100dB 1w1m speakers To reach 80dB at the listening point say 2m away requires 92 dB at 1m and about 1/6 Watt no problem... until you examine what's needed for the musical peaks +30dB or 1000 times larger or 165 Watts.

The up side is modern music is increasingly compressed so we can use MP3 players so dynamic range is no longer as much of a concern and as i said, you can't hear very short clipping as a flaw, but one can easily see it on an oscilloscope looking at the amplifier output Voltage.

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RE: really? do the math (it's easy!)-tomservo09:10:35 02/25/17(16)

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