Shure PG81-XLR

Microphone Type
Condenser (electret bias)
Polar Pattern
Cardioid (unidirectional), symmetrical about axis
Frequency Response
40 to 18,000 Hz
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of microphone output connector
Output Impedance (at 1000 Hz)
600 ohms
Sensitivity (at 1000 Hz)
-48 dBV/Pa, (4.0 mV), 1 Pascal = 94 dB SPL
Electromagnetic Hum Sensitivity
-7 dB equivalent SPL in a 1 millioersted field (60 Hz)
Switch
Built-in On/Off switch
Recommended Input Load Impedance
800 ohms minimum
Output Clipping Level (1 kHz, 1 % THD)
2000 ohm load
13 dBV (0.22 V) (phantom)
-17 dBV (0.14 V) (battery)
Maximum SPL
2000 ohm load: 131 dB (phantom), 127 dB (battery)
Self-Noise (Equivalent SPL)
20 dB typical, A-weighted
Dynamic Range (maximum SPL, 2k ohm load, to A-weighted noise level)
111 dB (phantom); 107 dB (battery)
Signal-to-Noise Ratio
68 dB (IEC 651)* at 94 dB SPL
Power
Phantom Power
Supply Voltage: 11 to 52 Vdc
Current Drain: 2.0 mA max at 52 Vdc
Maximum Exteral Voltage Applied to Pins 2 and 3 with respect to Pin 1: +52 Vdc
Reverse polarity protected to: 100 Vdc
Battery Power
Recommended: 1.5 V alkaline AA size (NEDA 15A)
Life: up to 10,000 hours
Connector
Three pin professional audio connector (male XLR type)
Case
Steel and brass construction with black painted finish
Environmental Conditions
This microphone operates over a temperature range of -29 to 57 degrees Celsius (-20 to 135 degrees Fahrenheit), and at a relative humidity of 0 to 95%.
Weight
Net: 250 g (8.8 oz) less battery
Packaged: 880 g (1 lb 15 oz)