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Message: <blockquote data-quote="Lich" data-source="post: 493160" data-attributes="member: 6">What is the difference between the RMS and PMPO audio output of speakers?The RMS (Root Means Square) power is found by averaging the instantaneous power output over a long period of time, so it is actually the average power or mean power. Peak momentary performance output (PMPO) is calculated as the maximum power in watts available under perfect conditions that are seldom to achieved in practical use. Few sound systems can sustain their PMPO for more than a few milliseconds without being destroyed. The PMPO measurements vary greatly with the manufacturer.It is thus impossible to translate RMS into PMPO and vice versa. Some you multiply RMS number by 35 to get the PMPO number; others multiply it by 60.</blockquote>

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