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General Car Audio
RMS is not a unit of measurement!
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<blockquote data-quote="BoomTaco64" data-source="post: 8266873" data-attributes="member: 659681"><p>you need to learn more about what you are trying to "teach" people. you will not change they way power is represented/understood in the car audio industry then and now. There is more to what the definitions are that what you understand them to be. i am not saying that i do understand any better than you but you are not "teaching" anything. you need to explain why you think the term should not be used and then provide actual reasoning behind in. then explain why you think a different term should be used, if any, then support your findings.</p><p></p><p>Right from your source:</p><p></p><p>"The term "RMS power" is sometimes used in the audio industry as a synonym for "mean power" or "average power" (it is proportional to the square of the RMS voltage or RMS current in a resistive load). For a discussion of audio power measurements and their shortcomings, see Audio power."</p><p></p><p>Now read this:</p><p></p><p><a href="http://en.wikipedia.org/wiki/Audio_power" target="_blank">Audio power - Wikipedia, the free encyclopedia</a></p><p></p><p>RMS has been around car audio way before you were even a thought in your parrents mind and will continue to be in the industry until you are long gone and everyone forgets about you. best bet is to drop what you are trying to "teach" and just accept the way things are and keep your own visions to your self. Its not people getting offended its just others that do not want others to tell them what to say, what terms to use. what is this N. Korea? who are you Kim Jong II? What term would you use then?</p><p></p><p>I'd challenge you do define "peak" watts.</p><p></p><p>Peak:</p><p></p><p>"Peak power is the maximum level of power output that is measured during an observation period. Peak power here refers to the maximum amount of power an electronic component can possibly handle for an instant without damage. Because of the highly dynamic nature of many audio signals (e.g., music, which accounts for an alternative name, music power) there is some sense in attempting to characterize the ability of equipment to handle quickly changing power levels. But, how small an instant is a matter of some variation from observer to observer and so a peak power rating is necessarily more than a little indeterminate.</p><p></p><p>It always produces a higher value than the continuous ("RMS") figure, however, and so has been tempting to use in advertising. Generally, whatever the definition of instant used, distortion is also higher for an instant. For instance, an amplifier (especially a surround sound receiver), may be rated at 1,000 watts peak power, but the harmonic distortion level might be 10 percent under those conditions. Peak power is also referred to as max power or PMPO (Peak Music Power Output).[2] It is often five or six times greater than the continuous ("RMS") rating.[citation needed]</p><p></p><p>Ambiguity: Among amplifiers, the peak power rating is fairly ambiguous as it varies depending on "acceptable" maximum harmonic distortion.[citation needed] For example, the peak power output rating of surround sound receivers is often taken at 10 percent THD.[citation needed] The highest generally acceptable level of total harmonic distortion is considered to be 0.1%. Hence, two max power output ratings are sometimes provided, one at 0.1% THD, and another at 10% THD.[citation needed]"...Taken from the Wikipedia page Audio Power.</p></blockquote><p></p>
[QUOTE="BoomTaco64, post: 8266873, member: 659681"] you need to learn more about what you are trying to "teach" people. you will not change they way power is represented/understood in the car audio industry then and now. There is more to what the definitions are that what you understand them to be. i am not saying that i do understand any better than you but you are not "teaching" anything. you need to explain why you think the term should not be used and then provide actual reasoning behind in. then explain why you think a different term should be used, if any, then support your findings. Right from your source: "The term "RMS power" is sometimes used in the audio industry as a synonym for "mean power" or "average power" (it is proportional to the square of the RMS voltage or RMS current in a resistive load). For a discussion of audio power measurements and their shortcomings, see Audio power." Now read this: [URL="http://en.wikipedia.org/wiki/Audio_power"]Audio power - Wikipedia, the free encyclopedia[/URL] RMS has been around car audio way before you were even a thought in your parrents mind and will continue to be in the industry until you are long gone and everyone forgets about you. best bet is to drop what you are trying to "teach" and just accept the way things are and keep your own visions to your self. Its not people getting offended its just others that do not want others to tell them what to say, what terms to use. what is this N. Korea? who are you Kim Jong II? What term would you use then? I'd challenge you do define "peak" watts. Peak: "Peak power is the maximum level of power output that is measured during an observation period. Peak power here refers to the maximum amount of power an electronic component can possibly handle for an instant without damage. Because of the highly dynamic nature of many audio signals (e.g., music, which accounts for an alternative name, music power) there is some sense in attempting to characterize the ability of equipment to handle quickly changing power levels. But, how small an instant is a matter of some variation from observer to observer and so a peak power rating is necessarily more than a little indeterminate. It always produces a higher value than the continuous ("RMS") figure, however, and so has been tempting to use in advertising. Generally, whatever the definition of instant used, distortion is also higher for an instant. For instance, an amplifier (especially a surround sound receiver), may be rated at 1,000 watts peak power, but the harmonic distortion level might be 10 percent under those conditions. Peak power is also referred to as max power or PMPO (Peak Music Power Output).[2] It is often five or six times greater than the continuous ("RMS") rating.[citation needed] Ambiguity: Among amplifiers, the peak power rating is fairly ambiguous as it varies depending on "acceptable" maximum harmonic distortion.[citation needed] For example, the peak power output rating of surround sound receivers is often taken at 10 percent THD.[citation needed] The highest generally acceptable level of total harmonic distortion is considered to be 0.1%. Hence, two max power output ratings are sometimes provided, one at 0.1% THD, and another at 10% THD.[citation needed]"...Taken from the Wikipedia page Audio Power. [/QUOTE]
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