Shure SM81-LC Overhead Condenser Mic

Manufacturer: ShureSku: SM81-LC
In Stock With Supplier. Usually Ships With Next Courier
Price: NZ$1,189.00
SoundStore Price: NZ$1,075.00

Freight $10 per order to main centres.
$15 if Rural Delivery.

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 supplied 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


  • Type: Condenser (electret bias)
  • Frequency Response: 20 to 20,000 Hz
  • Polar Pattern: Cardioid (unidirectional) response—uniform with frequency, symmetrical about axis
  • Output 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)
  • Output Configuration and Connector: Balanced, transformer-coupled output; male XLR connector
  • Sensitivity (at 1,000 Hz) Open Circuit Voltage: –45 dBV/Pascal (5.6 mV) (1 Pascal = 94 dB SPL)
  • Clipping Level (at 1,000 Hz): 800 ohms Load –4 dBV (0.63 V), 150 ohms Load –15 dBV (0.18 V)
  • Total Harmonic Distortion: Less than 0.5% (131 dB SPL at 250 Hz into 800 ohms load)
  • Maximum SPL (at 1,000 Hz): 800 ohms load 136 dB (attenuator at 0)/146 dB (attenuator at –10) OR 150 ohms load 128 dB (attenuator at 0)/138 dB (attenuator at –10)
  • Hum Pickup: –3 dB equivalent SPL in a 1 mOe field (60 Hz)
  • Self-Noise (equivalent sound pressure levels; measured with true rms voltmeter): 16 dB typical, A-weighted OR 19 dB typical, weighted per DIN 45 405
  • Signal-to-Noise Ratio: 78 dB (IEC 651) at 94 dB SPL
  • Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
  • Attenuator Switch Positions (Lockable): 0 or –10 dB
  • Power Supply Voltage: 11 to 52 Vdc, positive, pins 2 and 3
  • Current Drain: 1.2 mA max
  • Operating Temperature: – 6.7degrees C to 49 degrees C
  • Case: Steel construction with vinyl metallic paint finish and stainless steel screens
  • Weight: Net 230 grams (8 oz)/Packaged 740 grams (1 lb 10 oz)

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