Concert Performance Power Amplifier Board PCBA
The power amplifier can be roughly divided into three categories: "professional power amplifier", "civil power amplifier" and "special power amplifier".
"Professional Amplifier" is generally used for the amplification of conferences, performances, halls, halls, venues, and museums.
The power amplifier has a large output power, perfect protection circuit and good heat dissipation.
1, the output power, the power problem is most unclear to the car audio practitioners, here we need to explain one by one:
A. Rated output power, called (RMS), refers to the maximum power that the amplifier's output audio signal can output in the total harmonic distortion range. It is typically 0.707 times of the peak value of the AC signal.
B. Average power, average power generally refers to the average power consumption at each frequency point. It is similar to the rated output power, but it generally refers to time.
C. Peak output power. The maximum music power that can be output by the power amplifier is called the peak output power. It does not consider distortion, and is usually about 1.414 times the (RMS) power. D, peak-to-peak power, which is the power of the peak of the positive voltage to the negative voltage, which is four times the peak output power. Its appearance is that the manufacturer has no practical significance for commercial purposes.
2, slew rate
the slew rate of the amplifier greatly affects the quality and performance of the treble playback. The faster the conversion rate, the better the treble sound quality, and the more accurate the capture of fleeting high-frequency information. High-end power amplifiers can be used for dozens to tens of V/us. Low- and medium-range power amplifiers are generally not marked. The value of this conversion rate is closely related to the design and materials, but it should not be too high. Ultrasonic signals above 20KHz that are inaudible to the human ear have no effect on improving the sound quality, but are easy to burn the tweeter.
usually we use antistatic foam for inner package, and use carton for outer package. you can check this photo for the time details.
What do we need from you to make this amplifier pcb?
pelase give us PCB Gerber File and BOM List , if you need functional test, please give us more instruction such as video or photos of how the machine will be connected.