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In Reply to: RE: What makes a driver High Efficiency? posted by tomservo on May 28, 2023 at 06:47:31
In response to the quasi logarithmic treatment of sound radiation and efficiency, what is ONE acoustic watt?All the while knowing that very FEW home loudspeakers can even produce that much sound, except for commercial ones in the home.
Edits: 05/29/23 05/29/23 05/29/23Follow Ups:
Well, if one does work, energy is expended and that is the energy radiated away from a loudspeaker.
Of politicians in England my old boss Roy (an acoustician from England) once said something like "if you took all the energy in sound of politicians arguing for a week, you could heat a cup of tea".
His meaning was our ears are very sensitive and the amount of actual energy in normal sound is very small.
So with 1 horsepower being 746 Watts and 1 Watt being 1/746 Horsepower AND that is subjectively LOUD, puts the ears sensitivity in perspective, also at the big end, what's needed to radiate multiple horsepower in stadium or outdoor event.
Great answer. All that remains is Distance and Size of Indoors or Outdoors. I'm sure the rock quarry near your house is really quiet today!BTW, my good friend retired Architect/Builder is a real speaker craftsman. He just bought Parasound JC-1+ monobloc power amps that are Class A/AB (after the first 30 Watts) that have 1 Horsepower per channel.
With 140 Amps of current in the Specs, I asked him if he wanted to use them as Arc Welders too!
Space heaters driving inefficient Planar Magnetics/tall array of Open Baffle woofers require lots of air space, especially in the summer. But they are near open windows most days now. LOL.
Meanwhile, I'm driving all my horns with TI 3255 chip amp derivatives. What a World, this audio stuff, all for our favorite musical illusions.
Edits: 05/29/23
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