Cardioid (unidirectional) - uniform with frequency, symmetrical about axis
Impedance
Dual. Microphone rating impedance is 150 ohms (260 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms and "High" for connection to high-impedance microphone inputs. Switch is in high-impedance position as supplied. To change impedance, see sections on lmpedance Selection and Connections in User Guide.
Sensitivity (AT 1,000 Hz):
LOW: Open Circuit Voltage* -57.5 dB Ref. 1V/Pascal (1.3 mV)
HIGH: Open Circuit Voltage* -38.5 dB Ref. 1V/Pascal (12 mV)
*(1 Pa = 94 dB SPL)
Switch
Press-to-Talk Switch - locking or nonlocking operation to actuate microphone circuit and an external relay or control circuit. Microphone circuit normally shorted in both high and low impedance.
Impedance Selection Switch - double-pole double- throw slide switch in microphone base to provide either high- or low-impedance operation.
Cartridge Shock Mount
Internal rubber vibration-isolator
Cable
2.1 m (7 ft) four-conductor, two conductors shielded non-detachable
Case
Two-tone gray ARMO-DUR® with dull-chrome-plated steel screen
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