Microflex�Lavalier microphones bring a new level of sophistication to personal voice reproduction. Like all Microflex family microphones, the Lavaliers use Shure's interchangeable condenser cartridges, available in cardioid, supercardioid or omnidirectional polar patterns. Compatible with all Shure wireless bodypack transmitters, their high sensitivity and wide frequency response guarantee great sound.TypeCondenser (electret bias)Frequency Response50 to 17,000 HzPolar PatternOmnidirectionalOutput ImpedanceEIA rated at 150 ohms (180 ohms actual)Open Circuit Sensitivity (at 1 kHz, ref. 1V/Pascal*)-27.5 dB (42.2 mV)All settings -12 dB at 0 gain *1 Pascal = 94 dB SPLMax SPL (1kHz at 1%THD, 1 k ohm load)116.7 dBAll settings +6 dB at 0 gainEquivalent Output Noise (A-weighted)20.5 dBSignal to Noise Ratio (referenced at 94 dB SPL)73.5 dBDynamic Range at 1 k ohm load96.2 dB100 dB at 0 gainPower Requirements11 to 52 Vdc phantom, 2.0 mACommon Mode Rejection45.0 dB minimumPolarityPositive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR connector.Environmental ConditionsOperating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)Storage Temperature Range: -29 to 74 degrees C (-20 to 165 degrees F)CableShielded 1.2 meter (4 ft.) cable terminated with a 4-Pin Female Mini Connector (TA4F) Wide dynamic range and frequency response for accurate sound reproduction across the audio spectrum Balanced, transformerless output for increased immunity to noise over long cable runs Interchangeable cartridges that provide an optimal choice for each application Rotatable tie-clip that pivots in 90 degree increments for placement flexibility Supplied snap-fit foam windscreen that controls breath noise and stays on securely Supplied dual tie clip holds two microphones for dual miking applications