Featuring breakthrough audio and mechanical design innovations, the phantom-powered U851RO offers outstanding speech intelligibility and transparent sound quality for surface-mount applications. The omnidirectional microphone is equipped with a PivotPoint® rotating output connector, UniSteep® filter and UniGuard® RFI-shielding technology. It accepts interchangeable condenser elements in cardioid and hypercardioid polar patterns. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851RO is equipped with self-contained electronics, eliminating the need for an external power module.
In Depth
Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
Low-profile element provides uniform omnidirectional polar pattern with 360º acceptance angle
PivotPoint® rotating output connector allows cable to exit from either the rear or the bottom of the microphone
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
Self-contained electronics eliminate need for external power module
Small-diameter UniPoint® capsule near boundary eliminates phase distortion and delivers clear, high-output performance
Heavy die-cast case and non-slip silicone foam bottom pads minimize coupling of surface vibration to the microphone
Low-profile design with low-reflectance finish for minimum visibility
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: –31 dB (28.2 mV) re 1V at 1 Pa
IMPEDANCE: 200 ohms
MAXIMUM INPUT SOUND LEVEL: 132 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical): 111 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO: 73 dB, 1 kHz at 1 Pa
PHANTOM POWER REQUIREMENTS: 11-52V DC, 4 mA typical
SWITCH: Flat, roll-off
WEIGHT: 262 g (9.2 oz)
DIMENSIONS: 108.0 mm (4.25") maximum length, 84.0 mm (3.31") maximum width, 23.0 mm (0.91") maximum height
OUTPUT CONNECTOR: TB3M-type
CABLE: 7.6 m (25.0') long, 3.2 mm (0.13") diameter, 2-conductor, shielded cable with TA3F-type and XLRM-type connectors
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