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Average Audio Power.

Evenin' all,

how can I easily practically determine the average power being delivered by an audio amplifier into a loudspeaker of declared impedance? Some audio amplifiers can not deliver the power that they claim.

Thanks.

Z.

Parents
  • I remember many years ago the claims by sellers of audio equipment consisted of complete lies. Add power from this that and tother that can`t possibly all run at once and you`d see an advertised figure of 1Kw run from a 10W supply etc. Some sellers do this so other sellers do until rules and laws are tightened up. Isn`t that always the case with businesses. Look back at some of the TV adverts of the 60s & 70s and compare with what they`d get away with today. Treat any info you get from any source at all with a large dollop of salt and you`d still fall far short of your expectations I`m afraid.

    Another example from the 70s, travel industry, it was normal practice for holiday firms to offer you a Ten Day Holiday, if the plane took off at 1 hour to midnight and landed at 1 hour past midnight then both of these where counted as 1 day each in the advertising. To what extent it is tightend up nowadays I`ve no idea. Could it be 12 hours equals 1 day these days perhaps ?

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  • I remember many years ago the claims by sellers of audio equipment consisted of complete lies. Add power from this that and tother that can`t possibly all run at once and you`d see an advertised figure of 1Kw run from a 10W supply etc. Some sellers do this so other sellers do until rules and laws are tightened up. Isn`t that always the case with businesses. Look back at some of the TV adverts of the 60s & 70s and compare with what they`d get away with today. Treat any info you get from any source at all with a large dollop of salt and you`d still fall far short of your expectations I`m afraid.

    Another example from the 70s, travel industry, it was normal practice for holiday firms to offer you a Ten Day Holiday, if the plane took off at 1 hour to midnight and landed at 1 hour past midnight then both of these where counted as 1 day each in the advertising. To what extent it is tightend up nowadays I`ve no idea. Could it be 12 hours equals 1 day these days perhaps ?

Children
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