Professional-quality vocal pickup with hands-free operation - Low-visibility headband provides stable, comfortable fit - Pivot-mounted flexible mic boom descends from left or right side - Belt-mounted power module operates on battery or phantom power - Cardioid polar pattern improves isolation of desired sound source - Also available as: ATM75cW less power module; 55 (1.4 m) cable terminated with locking 4-pin connector for A-T UniPak wireless systems
POLAR PATTERN : Cardioid FREQUENCY RESPONSE : 100-13,000 Hz LOW FREQUENCY ROLL-OFF : 80 Hz, 18 dB/octave OPEN CIRCUIT SENSITIVITY PHANTOM: -51 dB (2.8 mV) re 1V at 1 Pa BATTERY: -53 dB (2.2 mV) re 1V at 1 Pa IMPEDANCE PHANTOM: 200 ohms BATTERY: 270 ohms MAXIMUM INPUT SOUND LEVEL PHANTOM: 132 dB SPL, 1 kHz at 1% T.H.D. BATTERY: 121 dB SPL, 1 kHz at 1% T.H.D. DYNAMIC RANGE (typical) PHANTOM: 96 dB, 1 kHz at Max SPL BATTERY: 85 dB, 1 kHz at Max SPL SIGNAL-TO-NOISE RATIO 58 dB, 1 kHz at 1 Pa PHANTOM POWER REQUIREMENTS 11-52V DC, 2 mA typical BATTERY TYPE 1.5V AA/UM3 BATTERY CURRENT / LIFE 0.4 mA / 2000 hours typical (alkaline) SWITCH : Off, on-flat, on-roll-off