Inflated PMPO figures

pimpom · 2008-10-10T20:37:06+00:00

How do some manufacturers of audio amps arrive at the ridiculously high PMPO ratings they give for their products? E.g., an amp with a true 20-watt output may be rated at more than 1000 watts PMPO. (Please, let's not get sidetracked into how there's no such thing as RMS power - call it continuous power or whatever).I'm old enough to remember when IHF music power was often cited with some justification. At least you could actually get that amount of power output for a fleeting moment at very high THD levels. But multiple-kW ratings are now claimed for a music system using a few TDA2030 ICs. Even large reputable companies do it, so I find it hard to believe that they just grab some random figures out of thin air. Do they have some way of working out those figures, no matter how specious their reasoning might be? I was out of touch with the audio field for a long time, so I guess I missed something when the trend started.

Oct 10, 2008 22 Replies

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John Fields 17 years ago

What then, graphite? JF

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Eeyore 17 years ago

I should have been clearer and put the emphasis on *use*.

Graham

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Michael A. Terrell 17 years ago

Then explain the lawsuits against Toyota for oil problems with their engines.

http://improve-usenet.org/index.html aioe.org, Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages. If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm There are two kinds of people on this earth: The crazy, and the insane. The first sign of insanity is denying that you\'re crazy.

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