D series loudspeaker parameter optimization design, high-strength integrated PP diaphragm, fatigue-resistant and high-loss natural rubber ring, high-stability centering support, internal magnetic magnetic circuit system and high-performance NdFeB magnets, high-power 52mm temperature resistance Pure aluminum voice coil wire, with aluminum voice coil skeleton, integrated aluminum basin frame, long-stroke linear displacement fully symmetrical low-distortion driving magnetic field design.

Sound characteristics: The low-mid frequency sound field has a fast response and the unit is suitable for audio systems, mid-bass units of home theater systems and small-sized subwoofer units.