Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      VB400W-05 Product Number VB400W-05 Description Enquiry Send Enquiry Specification Size (mm) 103x103 Rated Impedance (Ω) 4、8、16(±15%) Rated Power (W) 20 Max Power (W) 40 Resonant Frequency (Hz) 70 ± 20% Frequency Range (Hz) fo-10000 Sound Pressure Level (dB) 88±3 Magnet Size (mm) ø 70x32x15 ø 60x32x10   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)