SM 57

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Type Dynamic
Frequency Response 40 to 15,000 Hz
Polar Pattern Cardioid
Sensitivity Open Circuit Voltage: -56.0 dBV/Pa (1.6 mV)
(at 1,000 Hz Open Circuit Voltage) (1 Pa = 94 dB SPL)
Impedance Rated impedance is 150Ω (310Ω actual) for connection to microphone inputs rated low impedance.
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3.
Case Dark gray, enamel-painted, die-cast steel with a polycarbonate grille and a stainless steel screen.
Connector Three-pin professional audio connector (male XLR type)
Net Weight 284 grams (10 oz)
Dimensions 157 mm (6-3/16 in.) L x 32 mm (1-1/4 in.) W at the widest point