What is PMPO ?

[William K. McFadden]

I have a 300 watt RMS amplifier that is rated at 2450 watts PMPO (peak
music power output). I have seen another that is rated at 120 watts
per channel PMPO and 20 watts per channel RMS.

around 50 watts RMS. Also, if it is a stereo amp, the PMPO number
might be for both channels, which means the amp could be 25 watts RMS
per channel.

I am not certain, but I think PMPO can be derived from the RMS rating
and the dynamic headroom figure. It also wouldn't surprise me if the
PMPO ratings are just made up.

I believe in the US, the Federal Trade Commission outlawed this method
of specifying amplifier power (at least for home equipment) some years
ago, but it is probably still practiced in other countries.

--
Bill McFadden Tektronix, Inc. P.O. Box 500 MS 58-639 Beaverton, OR 97077
bi...@tv.tv.tek.com, ...!tektronix!tv.tv.tek.com!bill Phone: (503) 627-6920
How can I prove I am not crazy to people who are?

[William K. McFadden]

I have a 300 watt RMS amplifier that is rated at 2450 watts PMPO (peak
music power output). I have seen another that is rated at 120 watts
per channel PMPO and 20 watts per channel RMS.

From this I would infer that your 400 watt PMPO amplifier is really