A coaxial type composite loudspeaker has at least three coaxially arranged loudspeakers of different opening diameters and different allocated frequency bands. This composite loudspeaker can reduce the synergistic interference among the component loudspeakers to prevent deterioration of the characteristics of the respective component loudspeakers and also can centralize the sound sources of the component loudspeakers upon a single axis to enhance the localization of sound image and improve the directivity on the horizontal plane.
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