Williams AV MIC 145 Dual Headset MicrophoneDual headset microphone with TRRS 3. 5mm plug for use with DLT 400 transceiver only. Specifications Element type Electret Condenser, Noise Cancelling Frequency Response 100Hz 10 kHz Signal to Noise Ratio More than 60dB @ 1kHz Mic Sensitivity 62 + 4dBv bars @1kHz @1 4 Headset Sensitivity 105dB SPL Typical at 1kHz @ 1mW on flat plate coupler Headset DC impedance 32 ohms typical (stereo) Boom Gooseneck Plug 3. 5mm TRRS w black plastic housing and strain
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