What is the principle of PA amplifiers because?
Use sound vibration, test current, vibration, and then expand the current, and then
Is the voice amplifier into audio signal, first by the pre amplifier to amplify it, then the power amplification circuit, and finally by the final circuit to enlarge the loudspeaker much larger than the original voice.
Power amplifier power amplifier, commonly known as "megaphone", is the most basic equipment in a sound system, its task is to come from the signal source (professional audio system is from the mixer) of the weak signal is amplified to drive the speaker sound.The function of the amplifier is to amplify the weak signal from the audio source or the front amplifier to drive the speaker to sound. A sound sound system, power amplifier role can not be done.Power amplifier is one of the largest family of all kinds of audio equipment. Its function is to amplify the weak signal input from sound source equipment and generate enough current to drive the speaker to replay the sound. Considering the power, impedance, distortion, dynamic and different range of use and control adjustment function, different amplifiers have different signal processing, line design and production process.
