Portable radio loudspeaker

Abstract

The present invention provides a portable wireless loudspeaker, which is mainly provided with an inductor, a volume control board, an amplifier board, a wireless receiver board and an infrared receiver board in the body, a cover is provided in front of the body, and a cover is provided on the cover. There is a filter cover and a net cover. The speaker is assembled on the inner surface of the cover. There is a CD player on the back wall of the main body. The main body can receive the sound source output by the wireless microphone and the infrared microphone at the same time, and then the sound source is amplified by the speaker. Output, the sound is amplified and sent out through the amplifier board. Its output power is large, and the sound quality is stable and undistorted. The volume is only A4 size, small and light, and can be easily carried out for use.

Description

technical field [0001] The invention relates to a portable wireless amplifier, in particular to a portable wireless amplifier which is small in size, light and handy, and can be easily carried and used outside. Background technique [0002] The existing loudspeaker is mainly provided with a wireless receiver in the casing, the sound source is transmitted through the wireless microphone, received by the wireless receiver in the casing, and then the loudspeaker outputs the loudspeaker. However, if the existing loudspeaker uses two A wireless microphone, whose audio frequency is similar, so it is easy to interfere with each other, and the sound transmits an interfering noise, which makes the ears uncomfortable; there is another speaker with an infrared receiver in the amplifier shell, which transmits the sound source through the infrared microphone. It is received by the infrared receiver in the casing, and then the loudspeaker outputs the loudspeaker. If the above-mentioned am...

AI Technical Summary

Problems solved by technology

[0002] The existing loudspeaker mainly has a wireless receiver in the casing, transmits the sound source through the wireless microphone, receives it by the wireless receiver in the casing, and then outputs the loudspeaker by the loudspeaker. However, if the existing loudspeaker uses two A wireless microphone, whose audio frequency is similar, so it is easy to interfere with each other, and the sound transmits an interfering noise, causing discomfort to the ears; there is another speaker with an infrared receiver in the amplifier shell, which transmits the sound source through the infrared microphone. It is received by the infrared receiver in the casing, and then amplified by the speaker, and if the above-mentioned amplifier uses two infrared microphones at the same time, it still has the same interference problem as the wireless microphone transmission sound source, and the volume of the amplifier on the market Large, it takes up a lot of space to carry, and when the volume is turned to the maximum, the sound quality is easy to be distorted; therefore, in view of the above-mentioned defects of the conventional amplifier, the inventor devoted himself to research and improvement, and was able to create the present invention for the first time

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