MegaphonesSmall And Safe And Convenient

The size of the loudspeaker varies, and each has its own use. Loudspeaker speakers and pickup microphone (microphone) close to each other, easy to produce whistle feedback (natural phenomenon). The loudspeaker is also an important tool for public figures and charity to communicate with all the people of this century. Lithium-ion loudspeakers available, to solve the traditional dry battery pollution of the environment, in response to national calls to promote environmental protection concept, to protect the green earth, it is mainly used mobile phone lithium technology to the loudspeaker power supply, not only long battery life, , Safe and convenient, original lithium battery is not any mercury, cadmium and other toxic elements, is the real environmental protection battery, the user can rest assured that use.

First, the main purpose

1, the school's indoor and outdoor lectures (especially for dance, gymnastics demonstration of public address, recording, playback) teaching.

2, conference, classroom, military training, tour guides, product promotion, auction of public address, recording, playback.

3, rally, speech, traffic command, exhibition, etc. A variety of live will be the flow of sound, recording, playback.

Second, the main features

1, all imports of high-quality chips, digital phase-locked loop technology, digital companding technology excellent quality.

2, wired and wireless microphone amplification, wireless transmission, line input and output.

3, collar clip microphone, high sensitivity, anti-whistle, clear sound quality.

4, quartz oscillation line, frequency stability, strong anti-interference.

5, multiple groups of frequencies do not interfere with each other, with a wide range of selectivity.

6, wireless microphone amplification.

7, digital reverberation.

Precautions

1. The use of loudspeakers should avoid the microphone is on the speaker, the volume adjustment is appropriate, so to avoid distortion and feedback whistle phenomenon.

2. Do not use the pull, drag the microphone line, or prone to poor contact between the wire lead.

3. The host battery should not be overdosed for a long time discharge, low battery prompts should be promptly charged, winter and summer vacations when not in use should pay attention to one to two months charge a power.

Maintenance

Loudspeakers are small electrical products, need to pay attention to maintenance, the following talk about how to maintain the loudspeaker to increase the life of the loudspeaker, the following look together to pay attention to the main points.

1. Protection of the microphone, the microphone is the most vulnerable to damage a part of the line length interface is often used, we use the microphone when the plug when more attention, do not force too much.

2. Do not force the microphone line, especially the interface of the site, it is vulnerable to injury, usually pay attention to the body's action not too much can.

3. battery maintenance, the battery must be used before the first charge a good charge, and then use, the use of the process must pay attention to the power, if the sound significantly smaller, we should pay attention to the charge, if the electric discharge of the battery may be It will never charge into the power, and these life common sense we must know that the phone battery is the same, long-term need to be sure to charge a good re-save, such as some teachers put the winter vacation, forget to charge, the results of the holiday back The battery discharge completely put all the electricity finished, the battery is broken, the loudspeaker can not be used, so after the charge to save, regular charge to save.

4. Note that moisture, loudspeakers are electrical products, circuit board if the humidity is too high, then easy to cause oxidation, so to be placed in a dry place to save.