The
Shure Model 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.
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 rolloff
- 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
