Shure 450 SERIES II
Voice Communication Microphone

OUR PART #  450-II

Our Price: $137.09
List Price: $175.00
You save 22%! (Low Price Guarantee)
In Stock

Designed for high-speed intelligibility and exceptional reliability paging and dispatching systems, a dual impedance switch for convenient changeover from low to high. The 450 Series II also features a finger-tip control bar (locking or non-locking action) to activate microphone circuit and an external relay or control circuit. With a long-life switch and an ARMO-DUR® casing, the 450 Series II is designed for dependability under all operating conditions. The optional RK1995 split-bar conversion kit provides Monitor/ Transmit switching.

Designed for indoor communication systems — fixed station — including police, fire, transportation, restaurant, and industrial applications.


  • Dual impedance
  • Locking press-to-talk switch
  • Rugged ARMO-DUR base and case
  • Adjustable height
  • Optional monitor/transmit switch conversion kit
    • Type: Dynamic
    • Frequency Response: 200 to 5,000 Hz
    • Polar Pattern: Omnidirectional
    • Impedance (at 1,000 Hz)
      • High Impedance: 30,000 ohms
      • Low Impedance: 225 ohms
    • Recommended Load Impedance
      • High Impedance: 100,000 ohms
      • Low Impedance: 1,000 ohms
    • Output Level (at 1,000 Hz, Open Circuit Voltage)
      • High Impedance: -35.0 dBV/Pa (17.8 mV)
      • Low Impedance: -57.0 dBV/Pa (1.4 mV)
    • Switches
      • Locking Press-to-Talk Switch: Activates microphone circuit and an external relay or control circuit. The microphone circuit is normally shorted.
      • Impedance Selection Switch: Double-pole, double-throw slide switch located in the base of the microphone.
    • Cable: 2.1 m (7 ft.) four-conductor, two conductorsshielded, non-detachable
    • Case: Two-tone gray ARMO-DUR
    • Net Weight: 737 grams (1 lb., 10 oz.)
    • Shipping Weight: 1020 grams (2 lb., 4 oz.)
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