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Crown Audio PZM-11LLWR Weather-Resistant Pressure Zone Microphone



Crown Audio PZM-11LLWR Weather-Resistant Pressure Zone Microphone


 

Our Price : $158.36


Product Code: 505350

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Description
 
The Crown® PZM®-11LLWR is a weather-resistant Pressure Zone Microphone® with a balanced, line-level output. A plastic membrane inside the microphone protects the mic capsule from water damage. The mic mounts in a standard electrical outlet box. Applications include fast-food restaurants, outdoor intercoms, toll booths, bridges, theme park security, home automation, and so on.

The microphone can be plugged directly into a VCR line input — no costly mic preamp is needed. Output (via screw terminals) can be balanced or unbalanced. Powering is by 12-24V AC or DC. The unit can be factory-set for phantom powering by special order, as a PZM-11LLWRS1.

In the PZM-11LLWR, frequencies below the voice range are rolled off to reduce traffic rumble. The high-frequency response is boosted to help articulation. Because of its tailored response and PZM construction, the PZM-11LLWR will pick up conversations or other desired sounds with extra clarity.

Unit is weather-resistant:
• Microphone works during and after rainfall.
• Mic’s frequency response will change temporarily if the membrane gets wet, but will return to normal when dry.
• If water freezes on the membrane, the mic’s frequency response will change, but will return to normal when the ice melts and the membrane dries.
• High-pressure water sprays directly on the membrane (through the louvered wall plate) may damage the membrane.
• The microphone is not designed to be submerged.

Features
• Ideal for outdoor security, surveillance and intercoms
• Weather-resistant
• Line-level output connects directly to video recorders
• Clear, articulate sound
• Inconspicuous

Specifications
  • Transducer type: Electret condenser. vFrequency response (typical): 80 Hz to 10,000 Hz (see Fig. 1).
  • Polar pattern: Hemispherical.
  • Impedance: 75 ohms, balanced. Recommended minimum load impedance 1000 ohms.
  • Open-circuit sensitivity, typical: 1.4 V/Pa.
  • Power sensitivity, typical: +8 dBm/Pa.
  • Equivalent noise level (self-noise): 26 dB SPL typical (0 dB = .0002 dyne/cm2), A-weighted.
  • S/N Ratio: 68 dB at 94 dB SPL.
  • Maximum SPL: 100 dB SPL produces 3% THD at maximum gain.
  • Operating voltage: 12-24V AC or DC. Phantom powering by special order as a PZM-11LLWRS1.
  • Polarity: Positive pressure on diaphragm produces positive voltage on audio+ terminal with respect to audio– terminal
  • Current drain: 4 milliamperes

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