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The SM5B has been specifically designed to minimize boom microphone problems in television and motion pic­ture sound stage and location recording. It was pains­takingly developed to provide extremely high reproduc­tion quality and great flexibility of application. A hum-bucking coil assures low susceptibility to electrical hum and allows the SM5B to be used in extreme hum fields.

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  • Mechanical suspension: Two-stage mechanical isolation for any boom applica­tion. Suspension elements internal to windscreen prevent wind noise generation in suspen­sion assembly; external shock assembly prevents trans­mission of boom or stand noise to microphone.
  • Integral windscreen: Very effective in outdoor locations and for fast boom swings.
  • Frequency response: Wide range, smooth and natural, specially tailored for dialog and vocal pickup with excel­lent presence, yet well-suited to scoring assignments.
  • Hum-bucking coil: Assures low susceptibility to elec­trical hum, permits use in extreme hum fields.
  • Directivity: Cardioid, symmetrical about axis and excep­tionally uniform with frequency. Minimizes sound color­ation due to off-axis pickup. Provides effective rejection of background noise and excellent reach.
  • Rugged and dependable under all operating conditions. Cartridge and isolation assembly protected by outer wind­screens and steel reinforcing rods.

Because of its unusual mechanical construction and per­formance characteristics, the SM5B may be used to ad­vantage in many applications where boom operation is not practical: for example, with an accessory desk stand for outdoor sports and other difficult remote pickups.

Technical Specification


  • Type: Dynamic
  • Frequency Response: 50 to 15,000 Hz (see Figure 1)
  • Polar Pattern: Cardioid (unidirectional)—uniform with
    frequency, symmetrical about axis (see Figure 2)
  • Impedance: Microphone rating impedance is 150
    ohms (160 ohms actual) for connection to micro-
    phone inputs rated at 19 to 300 ohms
  • Output Level (at 1,000 Hz)
    Open circuit voltage equals –78.0 dB (.13 mV)¹
    Power Level equals –56.0 dB²
    ¹ zero dB = 1 volt per microbar
    ² zero dB = 1 milliwatt per 10 microbars
  • Hum Pickup (typical): 24 dB equivalent
    SPL per milliœrsted
  • Cartridge Shock Mount: Internal silicone rubber
    suspension shock and vibration isolator
  • Swivel and External Shock Assembly: Integral part
    of microphone, with rubber vibration isolator
  • Case: Dark Gray enamel with light and dark gray foam windscreens
  • Net Weight: 964 grams (2 pounds, 2 ounces)
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