CPC H04R 9/025 (2013.01) [H04R 7/06 (2013.01); H04R 7/10 (2013.01); H04R 9/06 (2013.01); H04R 2307/021 (2013.01); H04R 2307/025 (2013.01); H04R 2307/027 (2013.01); H04R 2307/029 (2013.01)] | 9 Claims |
1. A mid-range loudspeaker comprising a frame, a diaphragm arranged on the frame, a magnetic circuit system arranged on the frame, and a voice coil connected to the diaphragm, wherein the diaphragm comprises a honeycomb plate having a front surface and a back surface, and covering films respectively covering the front surface and the back surface of the honeycomb plate, and the honeycomb plate is provided with a plurality of holes, wherein the diaphragm is composed of the honeycomb plate and the covering films, and the diaphragm is flat in shape as a whole, and an outer edge of the diaphragm is fixedly connected to the frame through a yoke ring; the magnetic circuit system comprises a U-yoke, a main magnetic steel, a front sheet, and a secondary magnetic steel, a middle part of the U-yoke is recessed and a peripheral edge extends upwards, an upper end portion of the U-yoke is fixedly connected to the frame, the main magnetic steel, the front sheet and the secondary magnetic steel are stacked on the bottom of the U-yoke and coaxially arranged, and the voice coil is inserted in a gap between the upper end portion of the U-yoke and the front sheet.
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