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The 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.
- 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
Specifications
- ELEMENT: Fixed-charge back plate permanently polarized condenser
- POLAR PATTERN: 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)
- SWITCH: Off, on-flat, on-roll-off
- WEIGHT (MICROPHONE): 2.8 oz (78 g)
- WEIGHT (POWER MODULE): 4.9 oz (139 g)
- DIMENSIONS (MICROPHONE): 2.56" (65.0 mm) diameter, 0.59" (15.1 mm) height
- DIMENSIONS (POWER MODULE): 3.31" (84.0 mm) H x 2.48" (63.0 mm) W x 0.87" (22.0 mm) D
- OUTPUT CONNECTOR (POWER MODULE): Integral 3-pin XLRM-type
- CABLE: 25.0' (7.6 m) long (permanently attached to microphone), 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F-type connector
- ACCESSORIES FURNISHED: AT8531 power module; battery; soft protective pouch
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