My friend's speakers are "40wattsRMS" and ones that I saw on eBay are "380wattsPMPO".... But despite the number difference, how are the wattage different? We can't figure out what 'PMPO' and 'RMS' mean :eek: :confused:

Any peeps know??
- Shawn

I think 40 watts means 40 watts and 380 watts means 380. I dont think whats at the end of them effects the wattage because a watt is a unit of power, nothing else effects it.

I think 40 RMS is 40 watts a second and 380wattsPMPO is 380 watts a minute.

380/60 = 6.33333333333

I may be horribly wrong though :)

Originally posted by nishansoft
We can't figure out what 'PMPO' and 'RMS' mean :eek: :confused:

http://www.childcomp.com/tut/audio/pmpo.html

Originally posted by nishansoft
My friend's speakers are "40wattsRMS" and ones that I saw on eBay are "380wattsPMPO".... But despite the number difference, how are the wattage different? We can't figure out what 'PMPO' and 'RMS' mean :eek: :confused:

PMPO, Peak Power, and other such ratings are meaningless, and are usually used by second-rate audio component manufacturers and distributors to make their products look better than they actually are. PMPO is a measurement of how much power the speaker can actually handle for a fraction of a second before it self-destructs. In other words, the "380 watt PMPO" speaker mentioned can handle a momentary spike of 380 watts, but that's it.

RMS (Root Mean Square), on the other hand, is a much more accurate way of measuring/rating audio components, as it generally indicates what a component is capable of delivering/handling on a continuous basis.

Bottom line - always use the RMS numbers when comparing and evaluating equipment. If a piece of equipment uses one of the other rating methods in place of RMS, it is to be avoided.

-Bob

Ahh, I see... Alrite thanks guys :)