Question about Audio Players & Recorders
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Posted on Jan 02, 2017
What is in a Watt.
Although Watt should be a dimension of power (current times Voltage) most manufactures give numbers you can't use. They always speak of maximum power. That number only can be reached in a laboratory and is measured on a clean resistor. They try the lowest resistor (not an impedance) the amplifier can work with, without blowing the end stage.
Then they put a free marge to tell you it should have a musical power of xxxx Watts. The output differs for speakers of 2 ohm, 4 ohm or 8 ohm. But there is not one speaker with an impedance over the whole audio spectrum.
Just read something over audio and power amplifiers.
The output has nothing to do with the quality of the sound. I have heard 15 Watt amplifiers perform hundred times better then some kilowatt amps.
Even if the manufacture says the amp is 1500 w it could be within legal limits and fir the amp is measured and can't deliver 100 watts of real power nobody can do a thing, because the watts could be the musical power. and that is a free invented non measurable measure. I don't even want to start over distortion, because the cheaper amps do produce more distortion, than music. If you use it for a sub woofer that is no problem, because you feel more than you hear.
Sorry for this big story and not saying what the real output is, because nowadays nobody bothers measuring amps like this.
The more serous audio magazines, will put some test about amps, and you should read one or two test to know what I mean about the worth of watts in audio.
Posted on Jul 12, 2014
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