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Shure SM94

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Cardioid Condenser Instrument Microphone
The SM94 is a unidirectional electret condenser microphone tailored to the instrument miking needs of professional musicians and sound engineers in both live performance and sound recording. Its smooth, flat frequency response is free of either a presence peak or a low-frequency rolloff, making it a perfect choice for all types of musical instruments.

The SM94 is equally at home in sound reinforcement systems or in sound studios and motion picture/ TV scoring stages. When used with the optional wind-screen, the SM94 can be used by vocalists and speech-makers who desire a wide, flat response with minimum coloration.

A sensitive mic with a wide, flat response ideal for live amplified and acoustic instruments.
Extremely well-suited for reproduction of stringed instruments, woodwinds and cymbals
AA battery or phantom power
Internal shock mount
Wide dynamic range
Smooth, flat frequency response
Uniform Cardioid condenser
Frequency response: 40 to 16,000 Hz
Cardioid Condenser (electret bias)
Frequency Response
40 to 16,000 Hz
Polar Pattern
Cardioid (unidirectional)--uniform with frequency, symmetrical about axis
Output Impedance
Rated at 150 ohms; 200 ohms actual
Recommended Minimum Load Impedance
800 ohms
Sensitivity (at 1,000 Hz)
Open Circuit Voltage: -49 dBV/Pa (3.5 mV) (phantom)
-50 dBV/Pa (3.2 mV) (battery) (1 Pa = 94dB SPL)
Output Clipping Level (1 kHz, 3% THD)
800 Ohm Load
-14 dBV (0.63 V) (phantom), 1% THD;
-23 dBV (0.71 V) (battery), 3% THD
Total Harmonic Distortion
< 0.25% (130 dB SPL at 250 Hz into 800 ohm load)
Maximum SPL
800 ohm Load: 141 dB (phantom), 123 dB (battery)
Hum Pickup
-3 dB equivalent SPL in a 1 millioersted field (60 Hz)
Output Noise (equivalent sound pressure levels; measured with true rms voltmeter)
22 dB typical, A-weighted
25 dB typical, weighted per DIN 45 505
Dynamic Range
119 dB (phantom); 101 dB (battery) (maximum SPL, 2000-ohm load, to A-weighted noise level)
Signal-to-Noise Ratio
72 dB (IEC 651) at 94 dB SPL
Overvoltage Protection
Maximum External Voltage Applied to Pins 2 and 3 with respect to Pin 1: +52Vdc
Reverse polarity protected to 75 Vdc
Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Cartridge Capacitance
24 pF
Power - Phantom Operation
Supply Voltage: 11 to 52 Vdc, (+) pins 2 and 3
Current Drain: 1.0 TO 1.2 mA max. at 52 Vdc
Power - Battery Operation
Type: 1.5 V alkaline, AA size (NEDA 15A)
Life: Up to 5,000 hours with fresh battery
Environmental Conditions
Storage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)
Operating: -6.7 degrees to 49 degrees C (20 degrees to 120 degrees F)
Storage: 0-95% relative humidity at room temperature (72 degrees to 80 degrees F, 22 degrees to 27 degrees C)
XLR professional audio 3-Pin
Steel and brass construction with gray finish and stainless steel mesh grille
See User Guide
Net: 250 grams (8.8 oz) less battery
Packaged: SM94-LC: 949.7 grams (2 lb 1 1/2 oz)
More Information
Weight 1.0000
Brand Shure
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