Shure SM81 Cardioid Condenser Microphone

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.

Features:

* 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

* Rugged steel construction for durability

* Field-usable over wide range of temperature and humidity conditions

Suggested Applications

- Acoustic Guitar

- Acoustic Bass

- Strings

- Piano

- Woodwinds

- Orchestra

- Cymbals

- Live Recording

- Ensemble Vocals

Specifications:

Type: Electret Condenser

Frequency Response: 20 to 20,000 Hz

Polar Pattern: Cardioid

Output Impedance: 150Ω (85 Ω actual)

Sensitivity: -45 dBV/Pa (5.6 mV)