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amp and speaker compatibility


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oldspark 
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Posted: May 08, 2012 at 10:57 PM / IP Logged  
DYohm - come-on - the difference between RMS power and real power into a resistive load?
And why test into a resistance, not a speaker equivalent?
Please also explain how your CRO "measures" or relates to CAP.
DYohn 
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Posted: May 09, 2012 at 7:40 PM / IP Logged  
Audio amplifiers are normally rated intpo a resistive load.  The correct term for audo amplifier power is "Continuous Power" not "RMS Power."  That's it.
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oldspark 
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Posted: May 09, 2012 at 10:47 PM / IP Logged  
So it's merely semantics, nothing "practical" per se.
My conclusion (based on other sources) is that your quote is merely that "power" as calculated from RMS voltage and current is in fact an "average" value, hence "average continuous" etc.
IMO the nett effect is negligible, and certainly pales into insignificance testing with resistors.
If a typical sub or speaker can double its impedance over its rated bandwidth, IMO it makes a joke simple "paper" ratings, let alone vague definitions.
Yep - I'd stick to pocket CROs or distortion meters; preferably dynamic.   
Conclusion: The correct terms for audio amplifiers and speakers is "Continuous Power" and "Impedance".
Thanks for your assistance.
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