The Audio-Technica U851RB Condenser Boundary Microphone is available in different colors and polar patterns. Each option has a 25.0' (7.6 m) cable with TA3F connector at the microphone and XLRM output connector.
The phantom-powered U851Rb condenser boundary microphone offers outstanding speech intelligibility and transparent sound quality for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing, and other demanding sound pickup situations. The microphone is equipped with a PivotPoint® rotating output connector, UniSteep® filter, and UniGuard® RFI-shielding technology. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851Rb is equipped with self-contained electronics, eliminating the need for an external power module. Threaded inserts on the bottom of the microphone allow it to be mounted with screws for increased security.
Audio-Technica U851RB Features
- Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
- Superior off-axis rejection for maximum gain before feedback
- PivotPoint® rotating output connector allows cable to exit from either the rear or the bottom of the microphone
- Small-diameter UniPoint® element near boundary eliminates phase distortion and delivers clear, high-output performance
- Available interchangeable elements permit angle of acceptance from 100° to 360°
- UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
- Self-contained electronics eliminate need for external power module
- 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
- Threaded inserts on bottom of microphone allow it to be mounted with screws for increased security
Microphone Configurations
- U851Rb: cardioid polar pattern (120° acceptance angle), black finish
- U851RWb: cardioid polar pattern (120° acceptance angle), white finish
- U851RbO: omnidirectional polar pattern (360° acceptance angle), black finish
- U851RB Condenser Boundary Microphone1
- Soft protective pouch1
- Two Year Limited End User Warranty1
- Transducer TypeCondenser
- Polar PatternsCardioid and Omnidirectional
- Frequency Response20 Hz - 20 kHz
- Output Impedance50 ohms
- Low Frequency Roll Off80 Hz, 18 dB/octave
- Open Circuit Sensitivity-34 dB (19.9 mV) re 1V at 1 Pa
- Maximum Input Sound Level134 dB SPL, 1 kHz at 1% T.H.D.
- Dynamic Range108 dB, 1 kHz at Max SPL
- Signal-to-Noise Ratio68 dB, 1 kHz at 1 Pa, A-weighted
- Phantom Power Requirements11-52V DC, 4.4 mA
- SwitchesFlat, roll-off
- Weight253 g (8.9 oz)
- Cable25 feet (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
- Dimensions0.91" (23 mm) H x 3.3" (83.9 mm) W x 4.25" (108 mm) D
- Output ConnectorMicrophone: TB3M-type Cable: 3-pin XLRM-type
