The Audio Technica U841A is an Omnidirectional Condenser Boundary Microphone.
The Audio Technica U841A delivers exceptionally intelligible audio reproduction in a super-compact, low-profile design. Equipped with UniGuard RFI-shielding technology, this omnidirectional condenser boundary microphone is designed for clear, highly intelligible sound reinforcement, professional recording, television and conferencing in surface-mount applications. The U841A has a 360° pickup angle and operates on battery or phantom power.
Audio Technica U841A main features include:
Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
UniGuard RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
UniSteep filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality
Small-diameter UniPoint capsule near boundary eliminates phase distortion and delivers clear, high-output performance
Heavy die-cast case and silicon foam bottom pad minimize coupling of surface vibration to the microphone
Low-profile design with low-reflectance black finish for minimum visibility
Operates on battery or phantom power
Fixed-charge back plate permanently polarized condenser
Omnidirectional in hemisphere above mounting surface
FREQUENCY RESPONSE: 30-20,000 Hz
LOW FREQUENCY ROLL-OFF: 80 Hz, 18 dB/octave
OPEN CIRCUIT SENSITIVITY: Phantom: –39 dB (11.2 mV) re 1V at 1 Pa, Battery: –40 dB (10.0 mV) re 1V at 1 Pa
IMPEDANCE Phantom: 200 ohms, Battery: 270 ohms
MAXIMUM INPUT SOUND LEVEL: Phantom: 132 dB, 1 kHz at 1% T.H.D., Battery: 122 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical): Phantom: 111 dB, 1 kHz at Max SPL
Battery: 101 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO 73 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 / 1200 hours typical (alkaline)