Single Channel Power Amplifier

Single Channel Power Amplifier KNMK-640

Descriptions

      The range of power amplifiers is designed for general commercial and industrial public address applications. The audio amplifier actually amplifies a smaller audio signal, increases its power, and then outputs it. Preamplification is mainly to complete the amplification of small signals. A codirectional amplification circuit is used to amplify the voltage of input audio small signals to obtain the input required by the later stage. The next video will focus on power amplification of audio so that it can drive resistors to get the desired audio.

Features

1. 5-way signal input (front panel one-way microphone input, rear panel two-way microphone input, two-way line input)

2. With 100V, 70V constant voltage output and 4~16 Ω constant resistance output;

3. The volume of each input channel is adjusted independently;

4. Independent adjustment of treble and bass;

5. Mic1 automatic silent tone;

6. Led level display;

7. It has perfect output short-circuit protection and over temperature protection functions;

8. Forced start of cooling fan;

9. It is very suitable for medium and small public places;

Front  Panel description

1.Power switch  2.bass adjustment  3.treble adjustment  4.Microphone volume  5.auxiliary volume  6.mic1 microphone jack  7.Power indicator  8.level indicator

Note: when the five level lights are always on, it indicates overload distortion, and the relevant volume knob should be adjusted to normal.

Front  Panel description

1.fuse.  2.AC power interface.  3.output terminal.  4.Line output port (recording or linking other audio equipment).  5.line input socket 1, 2.  6.Microphone socket 2 and 3.

Note: only one pair of the four output terminals of the power amplifier should be used.

Silent sound function  

Mic1 has the highest priority, and the signal input from this socket will suppress the input signals from other sockets.

Installation precautions

1 .do not block the vent of the equipment.