What is the reason that the loudspeaker is not amplifying?
The loudspeaker, as its name suggests, means to amplify the sound and spread it further. The loudspeaker has more penetrating power than the speakers.According to the mode of use: can be divided into wired amplifiers and wireless speakers;According to the use: it can be divided into teaching type, loudspeaker, guide type loudspeaker, entertainment loudspeaker.Loudspeakers can be divided into several types according to their size, mode of use and use. Each has its advantages. Portable speakers are generally only power 3--8W because of shape, size, and horn. But the wireless megaphone and the wired loudspeaker are different in size and different in use. The smaller size is suitable for the use of teachers and guides. They are hung on the waist to make the hands more free, and the power is usually 3W-8W. Large, suitable for outdoor activities, summer camps, extra-curricular lectures, such as large traffic flow, power is 35W---95W. The loudspeaker is according to the use of lithium battery type as a classification of. It solves the environmental pollution problem of traditional dry battery, it is mainly used for power amplifier of mobile phone lithium battery technology.
2 category editorFirst, megaphoneVoltage: 12/24VProduct features:1) sound amplification2) lighting3) alarm4) radio5) recording6) whistleMegaphone
Two waist hanging type loudspeakerTechnical parameter:Frequency response 100Hz-10KHz + 3dBUse the power lithium battery 7.4V 2200mASensitivity -53 + 3dBProduct features:1, the discharge time is long, one charge can use about 6 hours (lithium battery), is ordinary sound amplification2-4 times as many.2, sound amplification effect, power 0-25W, 2-4 times the ordinary amplifier.3, lithium battery, long life (2-4 years). 4, MP3 music or computer music can be played through the loudspeaker.5, the use of ABS engineering plastics, not afraid of impact.6, the timbre is clear.7, sound loud, power up to 15W, the applicable area of 200 square meters.8, small, ultra-thin speakers.9, convenient charging, plug plug on rechargeable, can be repeated charging.10, batteries (lithium batteries) use time is very long, can amount to 8-10 hours11, the product design is small, easy to carry, is a good helper of many activities.Range of use:Small microphone is not only suitable for teaching, tourism, enterprise flow, on-site training and other mobile site sound amplification, but also can be widely used in site promotions, fitness activitiesMoving and performing arts and other occasions.Matters needing attention1. when used, if the power indicator is flashing red or long bright red, it indicates that the power is insufficient, please charge it in time.AV AMP (7)2 when using the headset microphone, in order to achieve better results, please put the microphone on the headThe sound of the head is measured so as not to cause a whistling.