AKG PZM11 Flush-Mount Boundary Layer Microphone

An outstanding choice for security and surveillance applications.

The PZM11 professional boundary layer microphone is designed for security and surveillance applications. The PZM11 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 PZM11 has a mic-level output and is powered by 12-48V phantom power. 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
• Powered by 12-48V phantom power
• For security and surveillance applications

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 SPLtypical (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 48volts 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 first seal the opening between the mic capsule and boundary plate
• Net weight: 2.5 oz. (71 g)