专业音响 - c-mark 音箱的分类（Professional audio - Classification of c-mark speakers）.docVIP

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专业音响 - c-mark 音箱的分类（Professional audio - Classification of c-mark speakers）.doc

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专业音响 - c-mark 音箱的分类（Professional audio - Classification of c-mark speakers）

专业音响 - c-mark 音箱的分类（Professional audio - Classification of c-mark speakers） Classification of speakers Since the speaker since the invention has been extended to the ends of its working frequency range, high frequency is now using small aperture light diaphragm and other means to get a better solution, but the low frequency playback at the lower end of the still needs the help of the heavy box cavity. The amount of air pressure level and loudspeaker reproduction in the low-frequency region can promote the speed, volume flow is the product of the diaphragm radiation area and speed, so long as the small diaphragm movement distance - stroke, also can be the cone like a low frequency sound pressure level, deep and powerful bass. To achieve the best bass performance, the low-frequency loudspeaker needs a box to work properly. The appearance of all kinds of speakers, the most common is rectangular, the structure mainly has closed box, reflection box, transmission line and passive radiator, coupled cavity and horn and other types of. Closed box (Closed Enclosure) is the most simple structure of the loudspeaker system, proposed by Frederick in 1923, by the speaker unit mounted in a sealed box body structure, it will be the speaker prior to the acoustic radiation and acoustic radiation to completely isolated, but because of the closed box body, increase the movement quality of loudspeaker the resonance of the rigid, the lowest resonance frequency of loudspeaker rise. A closed box of sound and some deep bass, but the analysis of force, the use of ordinary hard surround speaker, in order to get satisfactory bass, the need for a large box of large volume, the new speaker closed by using closed compressed air quality elasticity in the box, although the speakers in the smaller box, cone the air behind the basin will exert anti driving force on the cone, so the small closed air cushion also known as speaker speaker. Bass reflex enclosure (Bass-Reflex Enclosure) also called invert