Henan peak sound recycling of used most professional

Henan Zhengzhou peak Used audio company is a professional recovery bar, KTV, bar, sound, lighting, computers, TV, air conditioning and other electrical equipment recycling company. For Henan Province bar, KTV, bar, shaking it slowly, professional audio equipment and peripherals enterprises, institutions and other performing arts performances for recycling and sales; focus on second-hand stereo Henan, bars ktv equipment recycling and sales. (Company Website: http: //www.hnyxhs.com/) professional audio power amplifier power amplifier part consists of the following action by the current control transistor or FET voltage-controlled action power of the power converter according to the input signal to change current. Because the sound is different amplitude and different frequency waves, ie, AC signal current, the collector current of the transistor is always the base current of β times, β AC transistor magnification application that, if the small signal injected into the base, the collector current flowing through the base current will be equal to β times, then the signal blocking capacitor isolate, get the current (or voltage) is the original β times the big signal, this phenomenon became transistor amplifier effect. After continuous current amplification, power amplification is completed. Dynamic microphone dynamic microphone (dynamic microphone) (moving-coilmicrophone [Project] acoustic dynamic microphone, moving coil microphone) is the sound into an electrical signal. Dynamic microphone is made of the phenomenon of electromagnetic induction, sound waves when the metal diaphragm vibrates, the coil connection (called a voice coil) on the diaphragm, together with the vibration, the vibration of the voice coil in the magnetic field of the permanent magnet, wherein generates induced current (electrical), the size and direction of the induced current is changed, the change of amplitude and frequency of the sound waves determines that the signal current is passed through the megaphone amplified speakers from the speaker on the issue of amplified sound. Speaker Speaker sound system throughout the terminal, its role is to convert electrical energy into corresponding audio sound energy and radiated into space to put it. It is the sound system is extremely important part, because it bears to convert electrical signals into acoustic signals for the human ear to listen directly to such a critical mission, it is to deal directly with human hearing, and people are very sensitive hearing, and complex voice tone has a strong ability to distinguish. Since the human ear to sound evaluation of subjective experience is the sound quality is a sound system of the most important criteria, therefore, can be considered the performance level of the speaker playback quality of a sound system is playing a key role.