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CROWN PZM-11 Wall-Plate Microphone

Print CROWN PZM-11 Wall-Plate Microphone pageRequest Bulk Pricing CAMCOR ITEM NO. 268009952 | MFG. PART NO. PZM-11
CROWN PZM-11 Wall-Plate Microphone
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MSRP: $159.00
Savings: $40.00

Your Price: $119.00
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Product Highlights
The Crown PZM-11 or 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 ... More

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Product Description

The Crown PZM-11 or 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-11 and PZM-11LL are designed to look like a light switch so as not to draw attention.

The PZM-11 has a mic-level output and is powered by 12-48V phantom power.

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 inputno costly mic preamp is needed.

To phantom power the PZM-11LL, a modifi cation will have to be made to the electronics module (see Installation Step 3 for details). A factory modifi ed version for direct phantom power is available as the PZM-11LLS2.

Like other Pressure Zone Microphones, the PZM-11and PZM-11LL utilize the Pressure Recording Process in which a miniature condenser microphone capsule is mounted very close to a sound-refl ecting 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 refl ected off the boundary. The benefi ts are a wide, smooth frequency response free of phase interference, excellent clarity and reach, and consistent pickup anywhere around the microphone.

In the PZM-11and 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.

Product Features
  • Ideal for security, surveillance and conferrence rooms
  • Clear, articulate sound
  • Low-impedance screw-terminal output
  • Inconspicuous
  • PZM-11 is mic level

Specifications

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 SPL typical (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 produces a positive voltage on screw terminal 2 with respect to screw terminal 3.
Operating voltage Standard phantom power, 12 to 48V DC on screw terminals 2 and 3 with respect to screw terminal 1.
Current drain 400 microamperes.
Materials Steel plate and high-impact plastic capsule holder.
Finish Off-white. May be painted any color; take care to fi rst seal the opening between the mic capsule and boundary plate.
Net weight 2.5 oz. (71 g).
Optional accessories Crown PH-1A phantom power supply (1 channel, AC-adapter powered).
Footnote
(*) 1 pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL.

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