Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      DV-212 Product Number DV-212 Description 12" Woofer; 12" Horn; Enquiry Send Enquiry Specification Tweeter Three Piezo Tweeter Max Power (W) 500 SPL (dB) 104 Frequency response (Hz) 20~20K   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)