Cardioid condenser instrument microphone offers a wide frequency response and low self-noise. Features include flat response curve, low noise and high output clipping level, low distortion over a range of load impedances, and low RF susceptibility.
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.
FEATURES
The SM81 is ruggedly constructed. 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, foam windscreen, and case for carrying and storage. Other accessories are available.
20 Hz to 20 kHz frequency response
Flat response curve for accurate reproduction of sound sources
Low noise and high output clipping level
Low distortion over a wide range of load impedances
Cardioid polar pattern, uniform with frequency and symmetric about axis, providing maximum rejection and minimum coloration of off-axis sounds
Low RF susceptibility
Selectable low-frequency response: flat, 6 or 18 dB/octave roll-off
0 dB/10 dB lockable attenuator switch
Phantom powering (DIN 45 596 voltages of 12 to 48 Vdc)
Rugged steel construction for durability
Field-usable over wide range of temperature and humidity conditions
ALSO IN THE BOX
1 - swivel adapter
1 - attenuator-switch lock
1 - foam windscreen
1 - carrying case
Weight (g) / (lb.): 230 g / 0.507 lb.
Height (mm) / (in): 212 mm / 8.346 in
Width (mm) / (in): 23.5 mm / 0.925 in
Depth (mm) / (in): 23.5 mm / 0.925 in
Transducer Type: Condenser
Polar Pattern: Cardioid
Frequency Range From (Hz): 20
Frequency Range To (kHz): 20
Sensitivity dBV/Pa: -45.00
Sensitivity mvpa: 5.60
Equivalent Self-noise: 16 dB(A)
Maximum Sound Pressure: 800 ohm load: 136 dB (attenuator at 0) 146 dB (attenuator at -10)
150 ohm load: 128 dB (attenuator at 0) 138 dB (attenuator at -10)
Impedance (O): 85
Switchable Low Cut: yes
Output Connectors: 3 Pin XLR
Attenuation PAD: yes
Interchangeable Capsule: no
Requires Phantom Power (VDC): 11 to 52
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