Average Reviews:
(More customer reviews)This mic is truthful. If you are a really good singer, this mic will make your voice sound professional; if you are not, then this mic will reveal your flaws. It has a flat frequency response and very low distortion, as well as very low handling noise. It must be used with the A3WS windscreen to prevent breath pops. Also, it should be held about four inches away.
I do not recommend this mic for rock or rap, as it works best at a distance, which would increase the chance of feedback. Other Shure mics such as the PG-58 are better for rock.
This mic runs on an AA battery, or phantom power. It is an ELECTRET condenser mic, which means it is not humidity sensitive like regular studio condenser mics.
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Ideal for instrument miking needs of professional musicians and sound engineers in both live performance and sound recording, the Shure SM94 is equally at home in sound reinforcement systems or in sound studios and motion picture/ TV scoring stages. 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 can be powered by any phantom power source, or by an internal 1.5-volt AA battery. The battery, which serves as a backup power source in the event of phantom power failure, can provide up to 5,000 hours of continuous operation. When used with the optional wind-screen (available separately), the SM94 can be used by vocalists and speech-makers who desire a wide, flat response with minimum coloration.
Key Features
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
Specifications
Type: 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-Ω 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
Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Cartridge Capacitance: 24 pF
Connector: XLR professional audio 3-Pin
Case: Steel and brass construction with gray finish and stainless steel mesh grille
Weight: 8.8 ounces (less battery)
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
Battery Operation
Type: 1.5 V alkaline, AA size (NEDA 15A)
Life: Up to 5,000 hours with fresh battery
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