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RMS Power?

I often see power specifications like "100W RMS".  There is no such thing as RMS power.  Of course, you can calculate RMS value from any curve, including power curve, but it won't represent anything.  "Real" power representing heat dissipated in resistive load is "Average Power"   Pavg=Vrms*Irms.   In case of sinewaves Pavg=0.707Vpeak * 0.707Ipeak = 0.5Ppeak,  or Ppeak = 2Pavg. 

Term "RMS Power" or "watts RMS" is a mistake, very common in audio.
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almarg
9,670 posts
 
bdp24  12-12-2018:

Al, as you can’t attend any of Roger’s presentations, have you watched the two videos on You Tube of his seminars at The Burning Amp Festival? His and Nelson Pass’, that is. Great stuff! It's a pleasure to own products by both these great designers. 

Thanks, Eric.  I had seen those mentioned in Roger's "Ask an amplifier designer" thread, and I've watched the video of Roger's presentation, as well as the several short videos on his Berkeleyhifischool.com site.  All very informative and well presented.  I haven't watched Nelson's yet, although I certainly intend to, in part because I recently purchased an XA25.  (I've been delighted with it, btw).

Roger's hifi school videos in particular pack an amazing amount of good information into their short lengths. 

Thanks again.  Best regards,
-- Al 
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sleepwalker65
832 posts
 
@williewonka 

Hmmm - I think I’ll elect to - NOT loose any sleep over it.


Umm, it’s “lose”, not “loose”. Uggghhhh!
williewonka
3,075 posts
 
Umm, it’s “lose”, not “loose”. Uggghhhh!

@sleepwalker65 - sorry about that.

Simply "typo" that I missed - it can happen to anyone - at some point

Happy Listening :-)

ptss
1,964 posts
 
I do love happy endings :)
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