Application of household power amplifier speaker

The home power amplifier can be further divided into the pre amplifier, the post - stage power amplifier and the combined class power amplifier. The combined machine is a machine for the first and the post - level set. The first stage is used to make the signal for the initial amplification, adjust the volume, and the latter is the former level to a large number of signals to promote the speaker.

The former stage is divided into two kinds of active and passive. Active power is the first stage in the use of power to enlarge the signal, and the former is the passive level only to adjust the volume of the effect. To be honest, passive today before success is not much, because there are a lot of resistance level and source respectively, only by a switch connected with the audio volume level, the resistance difference may cause the dynamic, details and frequency should be lost! In addition to the active front to adjust the volume, but also can be used at the beginning of the Ministry and reduce the level of resistance and don't sound, that is used as a buffer.

The latter is the former signal level to enlarge to the loudspeaker used, after class must be to drive a speaker. The so-called enough force, not the more loud enough force. Must have the ability to support the entire orchestra scene without losing its details.

Separate front and rear class is better than the combined machine, because each has a larger space to make more precision. But between the two is less interference, more details of the performance; and, separately before and after the level will be more to promote the fancier machine choice.