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 silicone 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
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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