Mono, class D digital power amplifier board, high power 12V / 24V DIY Mini 10w20w30w

10W/20W/30W大功率功放模块D类数字功放板单声道音频功放板12V/24V供电

DY-AP3001

Precautions for use:

1. The recommended power supply voltage is DC 8 ~ 24V. If it exceeds 26V, the chip will burn.

2. The power supply shall not exceed 16V when connected to 4 Ω horn and 24V when connected to 8 Ω horn.

3. The power supply current is recommended to be above 2A.

4. The positive and negative poles of the power supply cannot be reversed, and the chip is burned; This module is only applicable to single power supply and cannot be connected to negative power supply.

5. Ensure that the input sound source signal is 0.5V ~ 1.5V

6. The horn cable shall not be too long to ensure that it is suitable within 1m

7. Pay attention to electrostatic protection. Before contacting the power amplifier board, release the static electricity on your hand to avoid the breakdown of the power amplifier chip by static electricity, and the digital power amplifier has no impact on static electricity

Quite sensitive.

8. It is recommended to use the horn with rated power of 30W or above to avoid heating and burning of the horn

Troubleshooting

1. After power on, the horn "poof" didn't respond

1) Check whether the horn impedance is too small, and the power supply voltage is too high, and the instantaneous high current makes the chip enter DC protection; Try to reduce the supply voltage and restart.

2) Check whether the power supply is too small to move the horn. Try to replace the high-power power supply. Generally, there is no problem with the 2A power adapter.

2. There is "Zizi" noise when playing music

1) Change the sound source to see if it is the noise of the sound source itself.

2) Grounding the input terminal of the power amplifier is the problem of the power amplifier itself

3) If shielded audio cable is used, is it caused by wire quality problem

4) Replace the horn. Is it the problem of the horn itself

5) Replace the power supply. Is it the noise caused by unstable power supply

3. The horn generates heat and smoke during playing

If the horn power is too small, replace the high-power horn or reduce the signal input