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Product Cover Shure SM81-LC Cardioid Condenser Instrument Microphone

Shure SM81-LC Cardioid Condenser Instrument Microphone

$349.00
$349.00
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  • Features
  • Description
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0 Hz to 20 kHz frequency response

Selectable low-frequency response: flat, 6 or 18 dB/octave rolloff

Low noise and high output clipping level

Cardioid polar pattern, uniform with frequency and symmetric about axis, providing maximum rejection and minimum coloration of off-axis sounds

Phantom powering (DIN 45 596 voltages of 12 to 48 Vdc)

Binding:

Electronics

Brand:

Shure

EAN:

5554442420520

Label:

Shure Incorporated

Manufacturer:

Shure Incorporated

Model:

SM81-LC

Size:


Warranty:

2 Year Limited, Proof Of Purchase Required
Built to withstand the rigors of regular stage and studio use, the Shure SM81 unidirectional condenser microphone is a great choice for studio recording, broadcasting, and sound reinforcement. Its wide frequency response, low noise characteristics, and low RF susceptibility make it a perfect match for applications involving acoustic instruments, especially guitar, piano, and cymbals.

Ruggedly constructed, the SM81 operates on phantom power and performs over a wide range of temperatures and humidity conditions. It comes with a swivel adapter, attenuator-switch lock, foam windscreen, and case for carrying and storage.

Key Features



Frequency response.


Polar pattern.
  • 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

Specifications

  • 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 ohm Load: -4 dBV (0.63 V); 150 ohm Load: -15 dBV (0.18 V)
  • Total Harmonic Distortion Less than 0.5% (131 dB SPL at 250 H: z into 800 ohm load)
  • Maximum SPL (at 1,000 Hz):
    • 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)
  • 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; 19 dB typical, weighted per DIN 45 405
  • Signal-to-Noise Ratio: 78 dB (IEC 651)* at 94 dB SPL

    *S/N ratio is difference between 94 dB SPL and product's equivalent self noise (SPL A-weighted).

  • Overvoltage and Reverse Polarity Protection:
    • Max. external voltage applied to pins 2 and 3 with respect to pin 1: +52 Vdc
    • Reverse polarity protection: 200 mA max. (diode-clamped)
  • Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
  • Cartridge Capacitance: 54 pF
  • Low Frequency Response Switch Positions: Flat; -6 dB/octave below 100 Hz; -18 dB/octave below 80 Hz
  • 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.
  • Case: Steel construction with vinyl metallic paint finish and stainless steel screens
  • Weight: 8 ounces