The AKG PZM10 LL, part of the Pressure Zone Microphone line, is designed for security, surveillance, and conference-table use. Since it does not look like microphones, it is inconspicuous.
Each mic’s tubular housing mounts in a 25/32-inch diameter hole in a ceiling panel, wall or table. The PZM10 has a mic level output and a 3-pin XLR-type connector for easy plug-in installation. The mic requires 12 to 48V phantom power. The PZM10 LL has a line level output from its unterminated cable. It requires 12 to 24VDC. Like other Pressure Zone Microphones, the PZM10 LL uses a miniature mic capsule mounted very near a sound-reflecting plate or boundary, in the Pressure Zone. In this zone, direct sound from the sound source combines in phase at all frequencies with reflected sound off the boundary. The benefits 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 PZM10 LL 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 hum pickup or high-frequency loss. The mic’s humbucking transformer and steel case prevent hum pickup, even near fluorescent lights.
| Frequency Response (Typical) | 100 Hz to 20,000 Hz |
|---|---|
| Polar Pattern | Hemispherical |
| Impedance | 75 ohms, balanced. Recommended minimum load impedance 1000 ohms |
| Open Circuit Sensitivity | 1.4V/Pa (+3 dBV/Pa) |
| Power Sensitivity | +8 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 |
| Operating Voltage | 12 to 24V DC, positive voltage on red lead with respect to shield |
| Polarity | Positive pressure on the diaphragm produces a positive voltage on white lead |
| Current Drain | 2.8 mA at 12V DC, 4.22 mA at 24VDC |
| Output Connectors | None |
| Cable | 12-in. permanently attached 3-conductor shielded cable |
| Materials | Steel plate and housing |
| Finish | Off-white. May be painted any color |
| Operating Temperature Range | –10° to +60° C (+14° to +140° F) |
| Dimensions (Dia x H) | 1.54" (39 mm) x 2.83" (72 mm) |
| Net Weight | 0.16 lbs (74 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.
