Does the stereo have to use a power amplifier
Analysis: passive speakers must have a power amplifier. Smaller ones can't be used to sing because the power is too small. The loudspeaker can't stand it. No matter how expensive it is, it will burn if you take the initiative to sing. If you want to sing, use your pair of boxes to make a power amplifier, but I suggest you don't be a buyer if you just want to sing. The reverberation chip of household power amplifier is not very good, especially cheap.
Must the audio amplifier be used: first, pay attention to the power matching. Theoretically, the rated power of the speaker should be equal to the rated output power of the power amplifier, so that the equipment can work normally. It is suggested here that the big horse would rather pull the small car than the small horse can't pull the motor car in the end. If possible, you can choose high-power amplifier instead of low-power amplifier. Under normal circumstances, at least the rated output power of the power amplifier should be more than twice the power of the speaker. Although the big horse pulling the small car will cause unnecessary waste in the success rate, the small horse pulling the big car will not get enough driving power for the speaker, and the whole sound system can not give full play to the best sound effect.
Audio power amplifier: power amplifier, referred to as power amplifier, generally refers to the most basic equipment in the audio system, commonly known as "amplifier". Its task is to amplify the weak electrical signal from the signal source (or mixer in professional sound system) and drive the speaker to make sound. It can also refer to other devices for power amplification.
Audio power amplifier debugging: when to adjust all pass, when to adjust low pass, how much gain of bass is appropriate, how much gain of treble will not appear harsh, etc. These problems need attention. They all require years of technical accumulation and excellent tuning foundation. Sound technicians are indispensable. Generally, before turning on the power amplifier, control the volume to the low volume position! From small to large, it is generally recommended that two-thirds of the size is appropriate! Adjust the bass and treble according to your hobbies. Don't be greedy! According to the power of sound and the state of release.