Used Shure PG81-LC Cardioid Condenser Instrument Microphone With On-Off Switch, 40 Hz - 18 kHz Frequency Response

Condenser (electret bias)

Cardioid (unidirectional), symmetrical about axis

40 to 18,000 Hz

Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of microphone output connector

600 ohms

-48 dBV/Pa, (4.0 mV), 1 Pascal = 94 dB SPL

-7 dB equivalent SPL in a 1 millioersted field (60 Hz)

Built-in On/Off switch

800 ohms minimum

13 dBV (0.22 V) (phantom)
-17 dBV (0.14 V) (battery)
(1 kHz, 1 % THD)

2000 ohm load: 131 dB (phantom), 127 dB (battery)

20 dB typical, A-weighted

111 dB (phantom)
107 dB (battery)(maximum SPL, 2k ohm load, to A-weighted noise level) (maximum SPL, 2k ohm load, to A-weighted noise level)

68 dB (IEC 651) at 94 dB SPL

Supply Voltage: 11 to 52 Vdc
Current Drain: 2.0 mA max at 52 Vdc
Maximum External Voltage Applied to Pins 2 and 3 with respect to Pin 1: +52 Vdc
Reverse polarity protected to: 100 Vdc

Recommended: 1.5 V alkaline AA size (NEDA 15A)
Life: up to 10,000 hours

Three pin professional audio connector (male XLR type)

Steel and brass construction with black painted finish

-29 to 57 degrees Celsius (-20 to 135 degrees Fahrenheit)

0 to 95%

250 g (8.8 oz) less battery