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What does the rated power of a speaker mean-Alice

November 22, 2021

Rated power (RMS: sine wave root mean square) refers to the maximum electric power at which an 8Ω speaker is driven within the rated range and the waveform is continuous analog signal. After a certain interval and repeats a certain number of times, the speaker does not cause any damage; US Federal Trade The committee stipulated the power calibration standard in 1974: the effective wattage measured when the harmonic distortion is less than 1% in the range of 20 to 20000Hz is the output power of the amplifier when driving an 8Ω speaker load with two channels. The marked power is the rated output power.

In order to cater to consumers' psychology, merchants usually mark the instantaneous (peak) power, which is generally about 8 times the rated power. Therefore, the rated power shall prevail when purchasing multimedia speakers.

This is a strict definition.

Simply put, it is the maximum sound intensity that the speaker can emit, and it feels like how powerful the sound of the speaker can be.

Note that the word used here is "sound intensity", also called loudness, which is the size of the sound we actually feel when we listen to the sound; it is not the volume or pitch, that is the vibration frequency in physics, which is different. the concept of.

The power of the speaker is not the bigger the better, the application is the best.

For an ordinary home user's room of about 20 square meters, the real power of 60W (referring to the effective output power of the speaker 30W x 2) is sufficient, but the larger the reserve power of the power amplifier, the better, and the actual output power is best More than 2 times.

For example, if the speaker output is 30W, the power amplifier capacity should be greater than 60W. For the HiFi system, the power amplifier power driving the speaker is very large.

[Disclaimer: The above content comes from the Internet, and does not represent the views of this site. I hope some of the content can help you. 】


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