Max Input Power
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Meaured in watts, the maximum amount of power a speaker can handle under test conditions, using short bursts of input signal, with a narrow frequency range. Sometimes called "peak power," this specification can vary between different manufacturers. The max input power rating is often anywhere between 3 to 5 times the speaker's "Ad Hoc" or RMS rating.
A power rating conforming to "RMS" or "AD Hoc" follows industry-wide accepted specifications. The rating is made under continuous power over a period of time as opposed to short bursts, and is typically a full frequency band width spec. Industry standards usually follow a 20Hz to 20,000Hz frequency band. Other standards used in an RMS rating include distortion and impedance specifications. Caution should be used when matching various stereo components, as different units use different power ratings. Speakers are often measured in max power ratings, while amplifiers have traditionally been measured using RMS or Ad Hoc ratings. Sony provides both Max Input Power (or Peak Power) ratings and RMS (or Ad Hoc) power ratings for their amplifiers and speakers. |
