The Shure SM81 is a high-quality, unidirectional condenser microphone designed for studio recording, broadcasting, and sound reinforcement. Its wide frequency response, low noise characteristics, and low RF susceptibility have made it a standard for applications involving acoustic instruments, especially guitar, piano, and cymbals. With it’s rugged constructed, this microphone has become a staple of our company. It operates on phantom power and performs over a wide range of temperatures and humidity conditions. It is furnished with a swivel adapter, attenuator-switch lock, and foam windscreen.
Type:
Condenser
Frequency Response:
20Hz through 20KHz
Polar Pattern:
Cardioid (unidirectional) response-uniform with frequency, symmetrical about axis
Sensitivity (at 1,000 Hz):
Open Circuit Voltage: -45 dBV/Pascal* (5.6 mV) based on *1 Pascal=94 dB SPL*
Impedance:
Rated at 150 ohms (85 ohms actual) - Recommended minimum load impedance: 800 ohms (May be used with loads as low as 150 ohms with reduced clipping level)
Low Frequency Response Switch Positions:
Flat; -6 dB/octave below 100 Hz; -18 dB/octave below 80 Hz
Attenuator Switch Positions:
0 or -10 dB - Lockable
Weight:
230 grams (8 oz)
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