The Audio-Technica phantom-powered U851Rb cardioid 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, available separately in hypercardioid and omnidirectional polar patterns. 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.
Features
- Cardioid condenser boundary microphone
- 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
Specifications
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Cardioid
- Frequency Response: 20-20,000Hz
- Low Frequency Roll-Off: 80Hz, 18dB/octave
- Open Circuit Sensitivity: -34dB (19.9mV) re 1V @ 1 Pa
- Impedance: 50Ω
- Maximum Input Sound Level: 134dB SPL, 1kHz @ 1% T.H.D.
- Dynamic Range (Typical): 108dB, 1kHz @ Max SPL
- Signal-To-Noise Ratio: 68dB, 1kHz @ 1 Pa, A-weighted
- Phantom Power Requirements: 11-52V DC, 4.4mA
- Switch: Flat, roll-off
- Weight: 8.9oz (253g)
- Dimensions (HxWxD): 0.91″ x3.30″ x4.25″ (23.0mm x83.9mm x108.0mm)
- Output Connector:
Microphone: TB3M-type
Cable: 3-pin XLRM-type - Cable: 25′ (7.6m) long, 0.13″ (3.2mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
- Optional Interchangeable Elements:
UE-H Hypercardioid (100°)
UE-O Omnidirectional (360°)
Item Includes
- 1x U851Rb Boundary Microphone
- 1x 25′ (7.6m) Black microphone cable (TA3F, XLRM)
- 1x Soft pouch
Warranty
- U.S. Two-Year Limited End-User Warranty
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to