conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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| RMS vs Avg. value |
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Why is the RMS value preferable? Why can't the average value be used instead? |
Mon Aug 08, 2005 7:14 am |
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wailingalleycat
Forum Manager
Joined: 07 Oct 2003
Posts: 694
Location: Jersey C.I (UK) |
| RMS value |
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RMS stands for Root Mean Square and more closely represents the power handling of a speaker in real life use than the average value.
Remember RMS is NOT the same as the average!
In very simple terms, it is 0.707 of the peak voltage/power. (In a Sine wave, which is the form in which power enters a speaker driver)
See this link for more detailed, but still simple info
DI Forums Board
That link also cover PMPO, or Peak Music Power, which you are likely to come across, mainly in consumer or pro-sumer gear. Enjoy!
-Paul
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If In Doubt...Hit It With a Hammer, If Still In Doubt... Find a Bigger Hammer. |
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Mon Aug 08, 2005 1:43 pm |
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conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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| The ear design |
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Thanks wailing but that dint exactly answer my question.
Well, I found the answer myself. The RMS value is preferred because it's a close approximation of the human ear design. |
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Wed Aug 10, 2005 8:32 am |
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AUdIoCoUrSeS
Joined: 31 Oct 2002
Posts: 2014
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| heating power |
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RMS is actually preferred as it defines what is known as the "raw heating" power of an amplifer.
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It's all in the ears. - Learn the concepts not the software.
Audio Courses is a way into the music business for you
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Fri Aug 12, 2005 7:36 am |
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