The Shure 577B is a dynamic handheld cardioid microphone designed for paging and broadcast applications. The microphone's noise cancelling characteristics make it deal for high noise environments such as factories, news choppers, dispatch depots, etc. The contoured frequency response accentuates vocals providing better intelligibility and clarity. A mounting bracket is supplied to provide convenient hang-up when the microphone is not in use.
Noise cancelling characteristics Contoured frequency response 4-conductor shielded connection Suitable for paging and PA systems in medical offices, factories, airport terminals, etc
Shure 577B Features:
Frequency response designed for voice communications
Directional mic element
Minimal pick-up of background noise due to close-talk design
Rugged, high impact ARMO-DUR® case
Double-pole, single-throw PTT switch designed for constant usage
Four conductor, shielded, bare-ended (no connector) coil cord
Does not require DC power for operation
Shure 577B Specifications:
Type Dynamic, noise-canceling
Frequency Response 100 to 5,000 Hz
lmpedance Rated at 150 ohms (175 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms.
Output Level Open Circuit Voltage: -66.0 dBV/Pa* (0.5 mV) *0 dB = 1 volt per 1 Pascal/94 dB SPL