Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      VD77128F-01 Product Number VD77128F-01 Description Enquiry Send Enquiry Specification Size (mm) 77x128 Rated Impedance (Ω) 4、8、16(±15%) Rated Power (W) 8 Max Power (W) 15 Resonant Frequency (Hz) 140 ± 20% Frequency Range (Hz) fo-20000 Sound Pressure Level (dB) 88±3 Magnet Size (mm) ø 45x22x8 ø 40x22x8   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)