MX412 and MX418 Microflex® Standard Gooseneck Microphones Microflex Standard Gooseneck microphones bring a whole new meaning to the word flexible with their fully adjustable gooseneck. Designed for easy replacement and available in cardioid, supercardioid and omnidirectional polar patterns, the interchangeable cartridges offer wide frequency response and accurate sound reproduction for a wide variety of applications, such as houses of worship, courtrooms and conference centers. Plus, the condenser cartridges fit every model in the Microflex product line for enhanced convenience and consistent sound. Microphone Specifications: Frequency Response 50 to 17,000 Hz view larger Output Impedance 180 ohms actual (EIA rated at 150 ohms) Sensitivity (At 1,000 Hz, open circuit voltage*) Cardioid: -35.0 dBV/Pa (17.8 mV) Supercardioid: -33.5 dBV/Pa (21.1 mV) Omnidirectional: -27.5 dBV/Pa (42.2 mV) All values -12 dB at 0 gain; *1 Pascal = 94 dB SPL Maximum SPL (1 kHz at 1% THD, 1 k ohm load) Cardioid: 124.2 dB Supercardioid: 122.7 dB Omnidirectional: 116.7 dB All values +6 dB at 0 gain Equivalent Output Noise (A-weighted) Cardioid: 28.0 dB SPL Supercardioid: 26.5 dB SPL Omnidirectional: 20.5 dB SPL Signal to Noise Ratio (referenced at 94 dB SPL) Cardioid: 66.0 dB Supercardioid: 67.5 dB Omnidirectional: 73.5 dB Dynamic Range at 1 k ohm load 96.2 dB 100 dB at 0 gain Common Mode Rejection 45.0 dB minimum Preamplifier Output Clipping Level (1% THD) -6.0 dBV (0.5 V) -12 dBV at 0 gain Polarity Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector. Power Requirements 11 to 52 Vdc phantom, 2.0 mA Environmental Requirements Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F) Relative Humidity: 0 to 95%