Shure 515SDX
Cardioid Dynamic, Handheld, High or Low Impedance (Plug Selectable), Locking On/Off Switch.


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The Shure Model 515SDX is a dual-impedance, cardioid (unidirectional) dynamic microphone that is suitable for speech pickup in schools, churches, and meeting rooms. Its unidirectional polar pattern greatly reduces feedback.

The 515SDX includes a locking ON/OFF switch and an internal impedance selection socket mounted on the XLR connector for switching between high and low impedance. A slip-in swivel adapter is supplied for stand-mounted use.

  • Rolled-off low-frequency response combined with a smooth high-frequency rise for clear and intelligible voice pickup
  • Symmetrical cardioid pickup pattern minimizes feedback
  • Neodymium magnet for high signal-to-noise ratio
  • Shock-mounted cartridge that minimizes handling noise
  • Lockable ON/OFF switch
  • Dual impedance selectable by internal socket
  • Slip-in swivel adapter for stand-mounted use
  • Three-pin professional audio connector, the industry standard, for maximum interchangeability of cables
  • Tough, die-cast grille resists wear from constant use and handling
  • Field serviceable and backed by the Shure 2-year warranty
  • Type: Dynamic
  • Frequency Response: 80 to 15,000 Hz
  • Polar Pattern: Cardioid (unidirectional)
  • Impedance
    • LO Z: Microphone rating impedance is 150 ohms (270 ohms actual) for connection to inputs rated low impedance
    • HI Z: Microphone impedance is “High” for connections to high-impedance microphone inputs.
  • Output Level (at 1,000 Hz), Open Circuit Voltage:
    • LO Z: -56.0 dBV/Pa (1.6 mV)
    • HI Z: -37.5 dBV/Pa (14 mV)
  • Phasing: Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 in both HI Z and LO Z modes
  • Switch: Built-in ON/OFF switch, lockplate to lock switch ON
  • Connector: Three-pin professional (male XLR) type
  • Cartridge Shock Mount: Internal rubber vibration-isolator
  • Swivel Adapter: Positive action, break-resistant, adjustable through 180 degrees, slip-out removal for handheld use, designed for mounting on stand with 5/8 in.–27 thread
  • Case: Platinum beige enamel die casting with platinum beige die-cast grille and stainless steel screen
  • Dimensions: 6.567" (167 mm) length, 1.5" (3.81 cm) head diameter
  • Net Weight: 11.1 oz (315 grams)
  • Furnished Accessory: Swivel Adapter
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