Crown PZM11
Flush-Mount Boundary Layer Microphone

OUR PART #  PZM11

Our Price: $119.00List Price: $159.00
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The PZM11 is a low-cost microphone that mounts on a standard wall plate. The PZM-11 resembles a light switch rather than a microphone. Intelligibility is excellent, with low frequencies below the voice range rolled off to reduce the pickup of HVAC rumble. Electronics on the rear of the plate offer screw terminals, eliminating the need for connectors.  Fits into a standard electrical box and is very inexpensive for surveillance or conference room applications.  Powering is via 12-48 volts phantom power.

The PZM11 professional boundary layer microphone is designed for security and surveillance applications. The PZM11 is characterized by a consistent pickup anywhere around the mic. Low frequencies below the voice range are rolled off to reduce the pickup of heating, ventilation or air-conditioning rumble (HVAC noise). The high-frequency response is boosted slightly to aid clarity and articulation.

The PZM11 has a mic-level output and is powered by 12-48V phantom power. Electronics on the rear of the plate offer screw terminals, eliminating the need for connectors.

Specifications

  • Type: Pressure Zone Microphone
  • Element: Electret condenser
  • Frequency response (typical): 80 Hz to 20,000 Hz
  • Polar pattern: Hemispherical
  • Impedance: 225 ohms, balanced
  • Recommended minimum load impedance 1000 ohms
  • Open circuit sensitivity: 5 mV/Pa (–46 dBV/Pa)
  • Power sensitivity: –45.5 dBm/Pa
  • Equivalent noise level (self-noise): 26 dB SPLtypical (0 dB = .0002 dyne/cm2), A-weighted
  • S/N Ratio: 68 dB at 94 dB SPL
  • Maximum SPL: 120 dB SPL produces 3% THD
  • Output connector: Three screw terminals. 1 = ground,2 = audio hot (in polarity), 3 = audio cold (opposite polarity)
  • Polarity: Positive pressure on the diaphragm producesa positive voltage on screw terminal 2 with respect to screw terminal 3
  • Operating voltage: Standard phantom power, 12 to 48volts DC on screw terminals 2 and 3 with respect to screw terminal 1
  • Current drain: 400 microamperes
  • Materials: Steel plate and high-impact plasticcapsule holder
  • Finish: Off-white. May be painted any color; takecare to first seal the opening between the mic capsule and boundary plate
  • Net weight: 2.5 oz. (71 g)

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