How to solve the problem of speaker system?

If there are various problems with the speaker system, don’t rush to send it for repair. Here are some common senses for speaker system maintenance that are useful.

1. Portable wireless speaker music is silent

1). Take a wired microphone and insert it into the M1C (microphone) input port of the integrated power amplifier, turn on the power of the power amplifier, turn on the front input control knob of the microphone to the twelve o'clock position, and turn the microphone output volume knob to the twelve o'clock position Location. Turn on the microphone switch to shout, if there is no sound from the microphone, then insert the direct plug of the microphone into the other two microphone input ports in turn to test, if there is still no sound after all the input ports are tested, it may be that the power amplifier is faulty, you can call the technical engineer of the factory Consult the handling method. If there is no electronic technical support, you should write the fault status of the power amplifier on a small piece of paper and stick the small piece of paper on the power amplifier. After packaging, return it to the factory for maintenance.

2). If the microphone has sound but the music is silent after following the above method, first check whether the input of the audio source (VOD) is correct, whether the input wire is in good condition and has been properly connected to the amplifier. If the wire is in good condition, the connection is correct, but the music is still If there is no sound, you can check whether the music input port selection on the front panel of the power amplifier is consistent with the audio input port, and re-select the input port until there is music sound (if the cable is connected to the "CD" input port of the power amplifier after the VOD output, and If the "VOD" port is selected on the front panel of the power amplifier, then the music must be silent).

3). If the music is still silent after the above inspection operation, but the microphone is sounding, you should check whether there is a fault in the VOD. You can move the power amplifier to a room where both the music and the microphone are sounding for comparison and inspection. If the music is sounding in another room, you can check whether there is a problem with the VOD (Voice Computer). If there is a problem with the VOD setting or output, it can be solved by resetting.

4). If the portable wireless speaker uses a combination of professional preamplifier and professional power amplifier, the inspection is roughly the same as the above method.

2. The portable wireless speaker sound is abnormal

1. . It is generally impossible for the portable wireless speaker to burn out all the high, middle and bass units at once, so if the portable wireless speaker is silent, please check whether there is any problem with the VOD, preamplifier, and power amplifier, and then check the portable wireless speaker after confirming.

2). The portable wireless speaker makes an abnormal sound of "bubu".

① Disassemble the box net, check whether there is any air leakage in the box, and whether the unit is installed firmly on the box (sometimes the unit is not installed firmly, and the iron edge of the unit collides with the box during high-power and dynamic use, and it will also cause leakage. Strange sound of air), if all units are installed firmly, listen carefully to determine which unit the abnormal sound is coming from.

② Remove the unit with abnormal sound, put the unit flat on the ground, check whether the bubble edge is broken or degummed, and whether the dust cap is degummed (usually the sound of "bubu" is related to the above reasons). If there is no degumming or leaking, use the right finger to make a triangular balance and push down the paper tray of the unit naturally (when the normal unit is pushed down, there should be no noise, and there should be no noise due to edge rubbing, deformation of the voice coil, etc. The unit will emit abnormal noise.)

③ If the unit is not installed firmly and makes noise, just reinstall it firmly. If the unit bubble edge or dust cap is degummed and leaks air, use agricultural machinery glue (glue for repairing leather shoes on the roadside) to seal it and let it dry naturally.

④ Check whether there is no foam rubber buffer strip at the contact point between the portable wireless speaker iron net and the box body. If there is no foam rubber buffer strip, add a rubber strip to remove the noise.

⑤ If the portable wireless speaker unit is burnt out, it should be returned to the manufacturer for repair, because the voice coil and paper cone will affect the timbre, and the timbre of the portable wireless speaker will change if the original portable wireless speaker is not used.

3). If the music is still silent after the above inspection operation, but the microphone is sounding, you should check whether there is a fault in the VOD. You can move the power amplifier to a room where both the music and the microphone are sounding for comparison and inspection. If the music is sounding in another room, you can check whether there is a problem with the VOD (Voice Computer). If there is a problem with the VOD setting or output, it can be solved by resetting.