The following is the configuration experience in general audio engineering.
1. In some projects with low requirements and limited investment, the power of the electric amplifier is at least equal to the rated power of the loudspeaker. But be very careful not to distort the sound. Too small a power configuration does not seem to damage the speakers, but this is not the case. If the power is too low, it is easy to overload and cut the wave, generate a lot of harmonics, and burn out the treble.
2. In general engineering, it is recommended that the power of PA amplifiers should be 1.5 times. The bass part should be more than 1.5 times, so as to get enough strength.
3. Required venues, such as recording studio, concert hall, etc. Ideally, there should be twice the horn louudspeaker power. (This is consistent with one of the recommended values of IEC standards of the Electrotechnical Commission).
In a word, there is no hard and fast standard for the design of power amplifier. It depends on the investment budget and requirements for sound quality.
