SM – 87A

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Type Condenser
Frequency Response 50 to 20,000 Hz
Polar Pattern Supercardioid
Sensitivity (at 1,000 Hz) Open Circuit Voltage: –52.5 dBV/Pa (2.4 mV) (1 Pa = 94 dB SPL)
Impedance Rated at 150 ohms (100 ohms actual ±20%) Recommended minimum load impedance: 800 ohms
Output Clipping Level 1000 Ohm Load at 1,000 Hz: –6 dBV (0.5 V)
Maximum SPL (at 1,000 Hz) 140.5 dB (0.25% THD, 1000 ohm load)
Self-Noise 24 dB typical, A-weighted 26 dB typical, weighted per DIN 45 405
Dynamic Range (1000 ohms) 116.5 dB (maximum SPL to A-weighted noise level)
Signal-to-Noise Ratio 70 dB at 94 dB SPL (IEC 651) S/N ratio is difference between 94 dB SPL and equivalent SPL of self– noise A-weighted
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Power Requirements 11 to 52 vdc, 1.2 mA
Case Aluminum construction with steel grille and satin black finish
Connector Three-pin professional audio connector (male XLR type)
Net Weight 200 grams (7 oz)
Dimensions 192 mm (7-9/16 in.) L x 50 mm (2 in.) W at the widest point