Audio Technica U851Rb - Cardioid Condenser Boundary Microphone Phantom Only

Audio Technica U851Rb

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. It accepts interchangeable condenser elements – omnidirectional (360°), cardioid (120°), and hypercardioid (100°) – available separately. 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

Audio Technica U851Rb Specifications

• Element: Fixed-charge back plate, permanently polarized condenser
• Frequency Response: 20-20,000 Hz
• Low Frequency Roll Off: 80 Hz, 18 dB/octave
• Open Circuit Sensitivity: -34 dB (19.9 mV) re 1V at 1 Pa
• Maximum Input Sound Level: 134 dB SPL, 1 kHz at 1% T.H.D.
• Dynamic Range: 108 dB, 1 kHz at Max SPL
• Signal-to-Noise Ratio: 68 dB, 1 kHz at 1 Pa, A-weighted
• Phantom Power Requirements: 11-52V DC, 4.4 mA
• Switches: Flat, roll-off
• Weight: 253 g (8.9 oz)
• Cable: 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
• Dimensions: 0.91" (23.0 mm) H x 3.30" (83.9 mm) W x 4.25" (108.0 mm) D
• Output Connector: Microphone: TB3M-type Cable: 3-pin XLRM-type
• Optional Interchangeable Elements: UE-C cardioid (120°), UE-H hypercardioid (100°), UE-O omnidirectional (360°)
• Accessories Included: Soft protective pouch