The AKG PZM11 is a Pressure Zone Microphone designed for conference-room, security and surveillance applications. It can be mounted in the ceiling or wall in a standard electrical outlet box. Providing excellent intelligibility, the PZM11 is designed to look like a light switch so as not to draw attention.
The PZM11 has a mic level output and is powered by 12-48V phantom power. Like other Pressure Zone Microphones, the PZM11 utilizes the Pressure Recording Process in which a miniature condenser microphone capsule is mounted very close to a sound-reflecting 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 reflected off the boundary. The benefits are a wide, smooth frequency response free of phase interference, excellent clarity and “reach,” and consistent pickup anywhere around the microphone. In the PZM11 low frequencies below the voice range is 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.
| Element | Electret condenser |
|---|---|
| Frequency Response (typical) | 80 Hz to 20,000 Hz |
| Polar Pattern | Hemispherical |
| Impedance | 225 ohms, balanced |
| 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 |
| 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 first seal the opening between the mic capsule |
| Dimensions (H x W x D) | 1.14" (29 mm) x 2.76" (70 mm) x 4.53" (115 mm) |
| Net Weight | 0.15 lbs (71 g) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
