Abstract
A coaxial multi-way planar diaphragm loudspeaker system having inner and outer frames rigidly coupled to each other. An inner peripheral edge portion of a planar diaphragm for the bass-range and an outer peripheral edge portion of a planar diaphragm for the mid-range are commonly supported by a common edge supporting member which is rigidly coupled to the front surface of the inner frame. A single backchamber is provided for the mid-range and higher-range speaker units to separate them from the rear chamber of the bass-range loudspeaker unit. The backchamber has an inclined surface portion extending toward the the rear-side of the bass-range loudspeaker unit. The driver units for the treble-ranges are attached to the frame through a mounting bracket having an oblong screw hole so that they can first be assembled then accurately positioned.
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