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Shure SM81 Condenser Microphone

Proffesional Condenser Microphone

Dolphin id:
3073
Product SKU:
SM81

In stock

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.

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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.

  • 0 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

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 Hz 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:
    • Net: 230 grams (8 oz)
    • Packaged: 740 grams (1 lb 10 oz)

    Sm81 Condenser Microphone

£ 259.00 Web price, inc VAT

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