The Crown PZM-10 and PZM-10LL, part of the Pressure Zone Microphone line, are designed for security, surveillance, and conference-table use. Since they do not look like microphones, they are inconspicuous. Each mic's tubular housing mounts in a 25/32-inch diameter hole in a ceiling panel, wall or table.
The PZM-10LL has a line-level output from its unterminated cable. It requires 12 to 24V DC.Like other Pressure Zone Microphones,the PZM-10 and PZM-10LL use a miniature mic capsule mounted very near a sound-refl ecting plate or boundary, in the Pressure Zone. In this zone, direct sound from the sound source combines in phase at all frequencies with refl ected sound off the boundary. The benefi ts are many: 6 dB more sensitivity, 6 dB less noise, a wide smooth frequency response free of phase interference, excellent clarity and "reach," and consistent pickup anywhere around the mic. Frequencies below the voice range are rolled off to reduce pickup of air conditioning rumble. The high-frequency response is boosted slightly to help articulation. Because of their tailored response and PZM construction, the PZM-10 and PZM-10LL will pick up conversations or other desired sounds with extra clarity and definition.The output is balanced, low impedance,which allows long cable runs without humpickup or high-frequency loss. The mic's humbucking transformer and steel case prevent hum pickup, even near fluorescent lights.Features:* Pressure Zone Microphones for securityand surveillance* Clear, intelligible pickup of speech* Choice of mic level output (PZM-10) or line-level output (PZM-10LL)* Inconspicous, resembles a light switch* PZM-10 powered by 12-48V phantom power* PZM-10LL powered by 12-24V DC
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