Parameter characteristics

Caution:

1Recommended DC supply voltage8 ~ 24V,exceed26V, The chip will be burned.

2, Then4When the power supply does not exceed Ω speaker16V, Then8When the power supply does not exceed ohm speakers24V.

3Supply current recommendation2Athe above.

4, Positive and negative power supply can not be reversed, reverse burning chip; this applies only to a single power supply module, not to the negative supply.

5To ensure that the input audio signal0.5V ~ 1.5V

6, Speaker cable not too long, to ensure that1Suitable meters

7, Note that static protection, static electricity must first release the hand prior to contacting the amplifier board to avoid electrostatic breakdown of the power amplifier chip, the electrostatic digital amplifier

More sensitive.

8Recommended speaker rated power30WAnd above, avoid heat burn horn

Troubleshooting

1,After the horn "pop" soon after did not respond

1)Whether investigation speaker impedance is too small, and the power supply voltage is too high, a large current instantaneously into the DC protection of the chip; restart attempt to reduce the supply voltage.

2)Power is too small to see if the power supply does not move with the speaker, try to replace the power supply, generally2AThe power adapter is no problem.

2,Play music there is "buzzing" noise

1)Replace the audio to see whether the source comes with its own noise.

2)The amplifier input is grounded, the question of whether the amplifier itself

3)Use shielded audio cable, a wire is whether the quality of the noise introduced

4)Replace the speaker, whether the speaker itself is the problem

5)Replace the power supply, whether it is an unstable power supply noise introduced

3,Speaker playback smoke heat

Speaker power is too small, powerful speaker to replace or reduce the input signal