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Weather-Resistant PZM Microphone


The Crown® PZM®-11LLWR is a weather-resistant Pressure Zone Microphone® with a balanced, line-level output.
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Sale Price: $99.99
List Price: $229.00
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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.

NOTE: This is a B-STOCK item. It may have cosmetic flaws, but is guaranteed to be in proper working order. Comes with a 3 year warranty (same as if purchased new). Please contact your sales representative for more information on this and other products.

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.

The unit is “weather resistant,” which means:

  • The microphone will work during and after rainfall.
  • The 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.

Crown PZM11LL-WR Features:

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

Crown PZM11LL-WR Specifications:

  • Transducer type: Electret condenser.
  • Frequency response (typical): 80 Hz to 10 kHz
  • Polar pattern: Hemispherical.
  • Impedance: 75 ohms, balanced. Recommended minimum load impedance 1000ohms.
  • 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 = .0002dyne/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.
  • Polarity: Positive pressure on diaphragm produces positive voltage on audio+ terminal with respect to audio– terminal
  • Current drain: 4 milliamperes.
  • Operating temperature range: –10° to + 60° C, or +14° to +140° F. The mic still works at –40° C but its sensitivity is reduced. When the mic is returned to normal operating temperature, its sensitivity will be within +/–3 dB ofnormal.
  • Output connector: Screw terminals labeled AUDIO +, AUDIO – and GROUND.
  • Cable: None supplied. Use 2-conductor shielded mic cable and twisted-pair power cable.
  • Materials: Steel plate and high-impact plastic capsule holder. Plastic membrane, part no. 127255-1.
  • Finish: Silver. If you paint the mic, take care not to paint inside the louvered wall plate.
  • Net weight: 2.5 oz. (71 g).
  • Dimensions: 4.530" L x 2.780" W x 1.722" D

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