SM 81 LC-E

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Type Condenser
Frequency Response 20 to 20,000 Hz
Polar Pattern Cardioid
Sensitivity (at 1,000 Hz) Open Circuit Voltage: -45 dBV/Pascal (5.6 mV) (1 Pa = 94 dB SPL)
Impedance Rated at 150 ohms (85 ohms actual) Recommended minimum load impedance: 800 ohms
Output Clipping Level 800 ohm Load: -4 dBV (0.63 V) 150 ohm Load: -15 dBV (0.18 V)
Maximum SPL (at 1,000 Hz) 800 ohm load: 136 dB (attenuator at 0) 146 dB (attenuator at -10) 150 ohm load: 128 dB (attenuator at 0) 138 dB (attenuator at -10)
Self-Noise 16 dB typical, A-weighted 19 dB typical, weighted per DIN 45 405
Hum Pickup -3 dB equivalent SPL in a 1 mOe field (60 Hz)
Signal-to-Noise Ratio 78 dB (IEC 651)* at 94 dB SPL S/N ratio is difference between 94 dB SPL and equivalent SPL of self– noise A-weighted
Overvoltage and Reverse Polarity Protection Max. external voltage applied to pins 2 and 3 with respect to pin 1: +52 Vdc Reverse polarity protection: 200 mA max. (diode-clamped)
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Power 11 to 52 vdc, 1.2 mA
Case Steel construction with vinyl metallic paint finish and stainless steel screens
Connector Three-pin professional audio connector (male XLR type)
Net Weight 230 grams (8 oz)
Dimensions 212 mm (7-9/16 in.) L x 23.5 mm (2 in.) W at the widest point