- Ideal for drummers, keyboard players or anyone requiring hands-free operation - Comfortable, unobtrusive headband design with side-of-mouth pickup - Belt-mounted power module operates on battery or phantom power - Cardioid polar pattern improves isolation of desired sound source - Also available as ATM73cW less power module; 55 (1.4 m) cable terminated with locking 4-pin connector for A-T UniPak wireless systems
Element: Fixed-charge back plate, permanently polarized condenser Polar Pattern: Cardioid Frequency Response: 40-15,000 Hz Low Frequency Roll Off: 80 Hz, 18 dB/octave Open Circuit Sensitivity: PHANTOM: -55 dB (1.7 mV) re 1V at 1 Pa BATTERY: -56 dB (1.5 mV) re 1V at 1 Pa Impedance: PHANTOM: 200 ohms BATTERY: 270 ohms Maximum Input Sound Level: PHANTOM: 146 dB SPL, 1 kHz at 1% T.H.D. BATTERY: 132 dB SPL, 1 kHz at 1% T.H.D. Dynamic Range: PHANTOM: 111 dB, 1 kHz at Max SPL BATTERY: 97 dB, 1 kHz at Max SPL Signal to Noise Ratio: 59 dB, 1 kHz at 1 Pa Phantom Power Requiremens: 11-52V DC, 2 mA typical Battery Type: 1.5V AA/UM3 Battery Current Life: 0.4 mA / 1200 hours typical (alkaline) Switch: Off, on-flat, on-roll-off Cable: 4.6 (1.4 m) long (permanently attached to microphone), 0.10 (2.6 mm) diameter, 2-conductor shielded cable with TA3F-type connector Accessories: AT8531 power module; AT8128 windscreen; AT8125 windscreen; battery