AKG PZM11 LL Flush-Mount Line-Level Boundary Layer Microphone

An outstanding choice for security and surveillance applications.

The PZM11 LL professional boundary layer microphone is designed for security and surveillance applications. The PZM11 LL is characterized by a consistent pickup anywhere around the mic. Low frequencies below the voice range are rolled off to reduce the pickup of heating, ventilation or air-conditioning rumble (HVAC noise). The high-frequency response is boosted slightly to aid clarity and articulation. The PZM11LL 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). Electronics on the rear of the plate offer screw terminals, eliminating the need for connectors.

Features

• Hemispherical polar pattern for clear pickup of speech
• Low-frequency rolloff effectively reduces HVAC rumble
• Screw terminal - no need for connectors
• Line-level output
• For security and surveillance applications

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