Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      ND4872-01 Product Number ND4872-01 Description Enquiry Send Enquiry Specification Size (mm) 47.5x72 Rated Impedance (Ω) 4、8、16(±15%) Rated Power (W) 1 Max Power (W) 2 Resonant Frequency (Hz) 250 ± 20% Frequency Range (Hz) fo-10000 Sound Pressure Level (dB) 85±3 Magnet Size (mm) ø 13x10   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)