1. Please do not open the shell. Improper operation may cause electric shock.
2. Please use the switching power supply of the formal manufacturer, otherwise the machine
may be damaged.
3. Do not use the machine in a hot or humid environment.
A: The amplitude of electrical signals output by different playback devices is different. For
example, mobile phones are usually 0.35V, while CDs are 1V. The natural sound size is
different.
Q: Why does the volume of the machine remain the same, but the sound
level is different when connecting to different audio sources (for example,
connect a CD first, then a mobile phone)?
A: If you use a power supply other than the original standard, please replace the power
supply before testing. Many power sources on the market have large interference
coefficient of the text wave, which will cause a large current sound.
Q: Why does the horn make a loud current sound?
A: When the unshielded signal line is unloaded, the interference signal will enter the power
amplifier for amplification. It is recommended to replace it with shielded signal wire or
unplug the signal wire.
Q: Why does the speaker make a loud buzzing sound when I plug in the
input cable and do not connect the playback source?
A: When using Bluetooth to test the distance, it is normal that the sound is not stuck or
disconnected (without any obstacles) within 10 meters.(Note: The router will interfere with
the Bluetooth signal. Don't get too close!)
Q: Why does Bluetooth sound intermittent?
3
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