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In Reply to: RE: Physics, energy, frequency posted by spamblam@hotmail.com on April 12, 2014 at 19:59:38
If you are correct that low frequencies carry less energy but require more energy from a sound system, there can be only one answer: Low frequency transducers are less efficient than mid frequency and high frequency transducers. However, your premise might be completely wrong to begin with. You have given no evidence that low frequencies carry less energy nor have you given any evidence that bass requires more energy in a sound system. I think you need to validate those statements before wasting other people's energy in answering your question.
Good luck,
John Elison
Follow Ups:
See a lot of powered tweeters do ya?
The relationship between energy and frequency is basic physics.
> The relationship between energy and frequency is basic physics.
Actually, there is no physical relationship between energy and frequency.
Frequency is the number of occurrences of a repeating event per unit time.
Energy is a property of objects, transferable among them via fundamental interactions, which can be converted in form but not created or destroyed. The joule is the SI unit of energy, based on the amount transferred to an object by the mechanical work of moving it 1 meter against a force of 1 newton.
My guess is that your original premise is wrong and that any difference in input energy required for a given output is totally based on the efficiency of the system.
Good luck,
John Elison
Not quite, the change in energy between quantum states is h*f where h is Plank's constant. So when say an electron drops from one quantum state to a lower energy state, it emits a photon with h*f energy. The OP has jumped from the physics of quantum mechanics to that of acoustics, sort of a quantum leap :).
Also, Human ear is less efficient hearing at lower frequencies of the audible range. More sound pressure (and thus more wattage from the amp) is needed.
Edits: 04/12/14
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