by TomQuiring - 6/6/12 12:09 PM
In Reply to: RMS vs PMPO by prashanth3004
PMPO stands for "Peak Maximum Power Output" and it is purely a marketing term used to fool people into thinking that small crappy 4 watt RMS speakers can withstand 200watts (PMPO) of power. I'm pretty sure that PMPO is the wattage at which the speakers will actually catch fire.
Always use RMS for speaker and amplifier ratings, if given a peak power rating (and remember that "peak" is NOT PMPO) take the peak wattage and multiply by .707 to get the RMS wattage.
Very few, and only the top of the line amps and speakers, can deliver clean audio anywhere close to their peak output, there is always noise and distortion, you probably won't hear it or notice it, but its there. This "noise" can easily damage your speakers at high outputs, especially if you are anywhere close to your speakers peak power handling (high end speakers handle it better, but they are very expensive).
As a rule of thumb make sure your speakers RMS rating equals your amps PEAK rating. this will keep your equipment safer, and produce better sound.
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