What power amplifier should be used for 200W floor-standing audio?

Bearing power is a reference index of the horn, expressed in watts. This index does not explain the quality of the speaker, but only provides a reference for the selection of power amplifier. For example, the bearing power of a pair of speakers is marked as 10 ~ 200W, which means that the power amplifier needed to drive the speakers must have at least 10~200W output power, but it is forbidden to use the power amplifier above 200W for full power output. Otherwise, there may be concerns about burning boxes. Generally speaking, there will never be the trouble of pushing the household horn, only the problem of pushing it well and not pushing it well. The carrying power below 200 watts is much more than that of ordinary families, so we don't deliberately pursue too high.

In order to prevent the speaker from being damaged or distorted by the sudden strong pulse in the program signal, there is an experience worthy of reference: the nominal rated power of the selected speaker should be three times that calculated theoretically. Compared with crystal power amplifier, electron tube power amplifier needs different power reserve. This is because the overload curve of electron tube power amplifier is relatively flat. For the peak value of overloaded music signal, the electron tube power amplifier does not produce obvious peeling phenomenon, but only makes the peak tip round; This is often called flexible peak clipping. However, after the overload point, the nonlinear distortion of transistor power amplifier increases rapidly, which seriously clips the signal. It does not round the peak, but smoothes it neatly. Therefore, the choice of transistor power amplifier reserve is: high-fidelity power amplifier is 10 times; The application of high-grade power amplifier is 6-7 times; The application of midrange power amplifier is 3-4 times; The electron tube power amplifier can be much smaller than the above ratio. The average sound pressure level of the system and how much margin should be left for maximum sound pressure level depend on the content and working environment. This redundancy is at least 10dB, and for modern pop music, disco music and other music, it is necessary to leave a redundancy of 20-25dB.