Skip to main content

NEW Shure SM81 Instrument Microphone

Brand:

$540.00

Available on backorder

Categories: , Tag:
  • 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.

    SM81-LC – With windscreen, no cable. Phantom power required.

    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.

    Features:

    • 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.
    Environmental Conditions
    Temperature:
    Storage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)
    Operating: -6.7 degrees to 49 degrees C (20 degrees to 120 degrees F)
    Humidity:
    Storage 0 to 95% relative humidity at room temperature (72 degrees to 80 degrees F, 22 degrees to 27 degrees C)
    Case
    Steel construction with vinyl metallic paint finish and stainless steel screens
    Dimensions
    See User Guide
    Weight
    Net: 230 grams (8 oz)
    Packaged: 740 grams (1 lb 10 oz)
  • Weight 3 lbs
    Dimensions 16 × 10 × 6 in
  • Rather Rent?

    Our equipment is backed by tremendous service and support that allows it to outshine the rest. From maintaining our equipment with certified technicians, to cleaning and testing each piece of cable after every show, we go the extra mile to ensure the equipment you rent from us is show ready each and every time. We offer solutions for Sounds Systems, Audio Control, Wireless Microphones, IEM, Communication Systems, System Design and Calibration, LED Walls, Flypack Systems, Recording and Broadcasting, Projection Mapping, Creative LED Options, Media Servers and Playback, Moving Lights, Special Effects, Control and Networking, Power and Distribution, Follow Spots, Truss and accessories, Chain Motors, Ground Support, Fall Protection, Backline Rentals, Roof Systems, Barricade and Mobile Stages. Browse our inventory and request an online quote today, we would love to take care of your needs!