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Crown PZM-11LL
PZM Mic Mounted on Standard Wall Plate, Line-Level, PZM11LL

OUR PART #:  PZM11LL

The Crown PZM-11LL is a Pressure Zone Microphone designed for conference-room, security and surveillance applications.
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Sale Price: $113.63
List Price: $179.00
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Crown PZM-11LL
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The Crown PZM-11LL is a Pressure Zone Microphone designed for conference-room, security and surveillance applications. Each can be mounted in the ceiling or wall in a standard electrical outlet box. Providing excellent intelligibility, the PZM-11LL is designed to look like a light switch so as not to draw attention.

The PZM-11LL has a line-level output and can be powered by 24V AC, 12-24V DC, or 12-48V phantom power. Since the PZM-11LL has a high output, it can be plugged directly into a VCR line input - no costly mic preamp is needed. (To phantom power the PZM-11LL, a modification will have to be made to the electronics module.)

Like other Pressure Zone Microphones, the PZM-11LL utilizes the Pressure Recording Process in which a miniature condenser microphone capsule is mounted very close to a sound-reflecting plate or boundary. The capsule is mounted in the "Pressure Zone" just above the boundary, a region where sound coming directly from the sound source combines in-phase with sound reflected off the boundary. The benefits are a wide, smooth frequency response free of phase interference, excellent clarity and "reach", and consistant pickup anywhere around the microphone.

In the PZM-11LL, low frequencies below the voice range are rolled off to reduce pickup of air-conditioning rumble. The high-frequency response is boosted slightly to aid clarity and articulation.

The microphone connector is a row of screw terminals for easy installation. The output is balanced, low impedance, which allows long cable runs without hum pickup or high-frequency loss.

PZM-11LL Features

  • Ideal for security, surveillance and conference rooms
  • Clear, articulate sound
  • Low-impedance screw-terminal output
  • Inconspicuous
  • Line-level

Specifications

  • Type: Pressure Zone Microphone
  • Element: Electret Condenser
  • Frequency Response: 80 Hz to 20,000 Hz
  • Polar Pattern: Hemispherical
  • Impedance: 75 ohms, balanced; Recommended load impedance: 100 ohms
  • Open Circuit Sensitivity: 1.4V/Pa
  • Power Sensitivity: +8 dBm/Pa
  • Equivalent Noise Level (self-noise): 26 dB SPL typical, A-weighted
  • S/N Ratio: 68 dB at 94 dB SPL
  • Maximum SPL: 100 dB SPL produces 3% THD
  • Output connecter: Three screw terminals, 1=ground, 2=audio hot (in polarity), 3=audio cold (opposite polarity)
  • Operating Voltage: 24V AC, 12-14V DC
  • Current Drain: 4 mA
  • Finish: Off-white, may be painted any color; take care to first seal the opening between the mic capsule and boundary plate
  • Net Weight: 2.5 oz

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