Inspire 7.1 & 5.1 Total power of all speakers in PMPO
I'm Planning to buy a creative sound speakers inspire T7900 7.1 Or T6060 5.1 So Please Can Anybody Help me because i need to know as soon as possible the total power of their speakers not in RMS but in PMPO Thanks
RMS is a more accurate power measurement when compared to PMPO. RMS stands for root mean square. First a varying quantity is squared, then the average taken, then the square root. This gives an average typical value. For instance a 100Watt RMS amplifier can produce a 100Watt sine wave into its load. PMPO on the other hand stands for peak music power and it tells the power which the amplifier can maximally supply in some conditions, usually transients lasting only milliseconds assuming the amplifier is operating at 100% efficiency which is impossible. PMPO rating gives the highest measuring value but is quite useless because there is no industry standard how PMPO power should be measured. PMPO varies between manufucturers, and is calculated by their marketing department, they just pick a number that sound cool and come up with a formula that would result in that number. Have you ever wondered how some cheap home stereos claim they can produce 2600W PMPO from an amplifier powered by a 6Volt power supply? Vendors use PMPO to hide under-powered power supplies and amplifiers. Therefore RMS is the real measurement of power. So your question of finding the PMPO power rating from the RMS value has no single answer or mathematical formula to convert the RMS value to PMPO. This is simply because each amplifier manufucturer will produce their own propretary formula for figuring out PMPO power. That is why good quality amps and speakers, from respectable manufuctures like Creative for example, are rated in RMS power. But if you still want the PMPO value then usually the PMPO value is about fi've to ten times higher than the RMS value.
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How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
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Apple Retail Store - Genius Bar
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bethanybrennan wrote:
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