Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      NA300F-05 Product Number NA300F-05 Description Enquiry Send Enquiry Specification Size (mm) 77x77 Rated Impedance (Ω) 4、8、16(±15%) Rated Power (W) 2 Max Power (W) 4 Resonant Frequency (Hz) 170 ± 20% Frequency Range (Hz) fo-18000 Sound Pressure Level (dB) 86±3 Magnet Size (mm) ø 13x10   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)