The Shangqiu stage sound Monopoly: a speaker RMS rated power is 250 W, twice is 500 W. Therefore, only speakers acceptable power range is 400 W (0.8 × 500) -625 W (1.25 × 500). Exceed the maximum power is too large, is below the minimum possible damage due to amplifier clipping. To pay attention to the choice of the power amplifier output impedance must be consistent with the speaker on the label impedance (16Ω, 8Ω, 4Ω or 2Ω). Shangqiu stage sound Monopoly Jiaming Yang 1503 +71780 +75 QQ2579114209 RMS rated power that the thermal power limit of the speaker system, product comparison when it is a good parameter. Twice the RMS rating is mostly the true power of the actual audio signal. The power higher than the RMS power rating to 3 dB. RMS rated power of the power amplifier is measured based on the sine wave and its sine wave peak power is 3 dB higher than the RMS power. Therefore, to use twice the rated power of the power amplifier speaker system RMS should provide the speaker system of short-term peak power of 6 dB higher power. Why good speaker system can easily do this? RMS rated power are often used in professional loudspeaker systems using pink noise as a test signal. This signal with peak RMS level, its peak is higher than the RMS level by 6 dB. Pink noise test speaker system amplifier produces peak power of 6 dB higher than the RMS level of the input signal, and no clipping. The rule of thumb is to allow the amplifier to have this ability. Shangqiu the stage sound Monopoly phone Jiaming Yang 1503 +71780 +75 QQ2579114209 actual audio signal audio signal is usually at least higher than the RMS 10dB peak level value. Therefore, a suitable power amplifier should be in a typical audio signal, the RMS value of the at least lower than the speaker system RMS rated power 3 dB signal just before clipping, so that more secure. 3 is still likely to damage the speaker system why the rule of thumb for power within the speaker system is also completely may be damaged? Because power capacity depends on the practical application of the input signal type and user control of the input signal (not a manufacturer). For example, the RMS value and the peak level can probably with the compressed audio signal and synthetic, electric guitar and other instruments Narrow processed is equal to the level of certain signals. This means that any more than the speaker system RMS rated power amplifier are likely to damage the speakers! The Shangqiu the stage sound Monopoly phone Jiaming Yang 1503 +71780 +75 QQ2579114209 addition, no matter how much amplifier power, clipping the signal for the speaker system are trouble (even if clipping occurs in the mixer, equalizer or other signal processor). About the power capacity is not a perfect answer. For most of the on-site audio signal applied to the rule of thumb on the speaker system plays a real role in guiding the amplifier to select the best power size speaker system can work under maximum rated power state. 4 little distortion what speaker system when working at maximum power without distortion. Therefore, the manufacturers have no way to let the product is still in the maximum rated power distortion. If sound close to the maximum rated power is difficult to hear when the speaker system, you will find that the limiting factor is the maximum degree of distortion that you can live with, rather than the maximum value of the rated power. Shangqiu the stage sound Monopoly phone Jiaming Yang 1503 +71780 +75 QQ2579114209