Loudspeaker Performance Method

Many microphone product description small and light properties, in the audio community, we all know a word "good sound will be relatively heavy, does not represent a sound good." The better the performance, selection is even more demanding. Many ways to guarantee product quality, choice of raw materials may be heavier. Portable microphone for wired connections, waist and shoulder straps. Loudspeaker the loudspeaker and microphone MIC (microphone) which are comparatively close, easy howling feedback (natural phenomenon). Experienced manufacturer in this regard will be considered when designing a circuit, it is loud enough, and not easy to produce feedback.