The RMS (normally taken to be continuous sine wave) power rating for an amplifier is a long-established objective method of measurement, divorced from the advertising inflation and hype that gives us measures like Peak Instantaneous Music Power (acronym!).Also know there is no such thing as RMS power. If that is the claim then be highly suspicious of any rating.
Sorry, there is no such thing as "RMS" power. It's average power and determined by the integral of the RMS current and voltage.RMS power is true. You must be talking about PMPO!
Yeah. Yeah. But unfortunately it has now became convention to say 'RMS power'. Means if you are gonna buy some audio system then the power rating(average) to be considered is RMS(measured correctly, but misnamed). And 'peak music power' is another marketing gimmick as everybody knowsSorry, there is no such thing as "RMS" power. It's average power and determined by the integral of the RMS current and voltage.
Maybe 'convention' - still not true. Aetherwerx is quite right. There is no such thing as an 'RMS Watt'.Yeah. Yeah. But unfortunately it has now became convention to say 'RMS power'. Means if you are gonna buy some audio system then the power rating(average) to be considered is RMS(measured correctly, but misnamed). And 'peak music power' is another marketing gimmick as everybody knows
As he points out in the article, Watts RMS Was created so there would be some standard:
What happened is that they started to use it as a short hand method of saying that the amplifier's output conformed with a now-defunct US amplifier standard known as IHF A202, which was introduced in 1978.
The idea was that the words 'watts RMS' would serve to show the continuous average power output of an amplifier had been measured correctly according to IHF A202. That is, using the correct test signal (a sine wave), the correct period of time for measurement (more than five minutes), a properly calibrated, true RMS-reading voltmeter with an accuracy of better than 1% of reading, without exceeding a specific level of distortion (0.1%) into a defined load (usually 8-ohms) with the amplifier first having been pre-conditioned by means of driving all channels simultaneously with a 1kHz sinusoidal signal to a nominal power output into the rated load equal to 33% of the rated power output for at least hour (or more if protective circuitry interfered with continuous operation).
I agree.The best test is your ears. Though remember that distorted music has a tendency to sound "louder", since it can physically hurt at higher SPL levels, leading some to think they have more power. Non-Distorted music with wide dynamic range can hit "ear damaging" levels, without being literally painful.
No - he starts with the words 'The idea was' and finishes with 'This was misguided thinking even at the time'The author states that Watts RMS doesn't exist, then posts the definition of the standard used for a while to determine RMS Watts.
|Thread starter||Similar threads||Forum||Replies||Date|
|G||Please verify AM tube radio transmitter!||Wireless & RF Design||11|
|S||Verify Genuine Class A Operation with Scope||Test & Measurement||73|
|verify circuit design whether it works fine or not.||Microcontrollers||7|
|G||I've converted a simple circuit schematics to PCB could you please verify my work||General Electronics Chat||15|
|I||Help verify the pinouts of an unknown transformer||Datasheets, Manuals & Parts Identification||2|
by Robert Keim
by Robert Keim
by Aaron Carman