Professionally speaking, the matching principle of power amplifier and speaker is generally that the output power of power amplifier is 1.5 ~ 2 times of the input power of speaker, that is to say, the speaker of 300W-W should match the power amplifier of 450 ~ 600 W, so that the peak output of power amplifier is exactly the same as that of speaker input of -3db, which ensures that the power amplifier and speaker are not distorted but overloaded.

Enough for a wedding.