Speaker power handling capacity (or the rated power of the horn speaker) is an important technical parameters, it represents the speaker horn to withstand long-term continuous safe power input capacity, understand the power handling capacity of the horn speaker, first of all must understand how the speaker driver is damaged, the driver damage mode has two kinds: One is the voice coil overheating damage (voice coil burn, overheating deformation, inter-coil breakdown, etc.), the other is the speaker diaphragm displacement of the driver exceeds the limit, so that the conical diaphragm of the speaker/or its surrounding elastic parts damaged, usually occurs in the low-frequency signal containing many large amplitude.
Peak (Peak) is a signal to achieve the maximum level, for sine wave, the Peak level is greater than the RMS level 3 db, for music signal Peak level more than valid values can be up to 10 to 15 db in the evaluation of a loudspeaker displacement, Peak is important, and Peak factor, used to indicate the ratio of the Peak level and the RMS level, For the AES2-1984 pink noise source, the peak factor is 6dB, that is, the peak voltage is 4 times the RMS voltage.
The power handling capacity of the loudspeaker is measured under the condition that the permanent change of electrical and mechanical properties is not more than 10% after 2 hours of continuous operation of the processed pink noise signal (AES2-11984).