
Cardioid Condenser Boundary Microphone
U851R
U851R
Features
This product has been discontinued. Please see the U851Rb.
Featuring breakthrough audio and mechanical design innovations, the phantom-powered U851R offers outstanding speech intelligibility and transparent sound quality for surface-mount applications. The microphone is equipped with a PivotPoint® rotating output connector, UniSteep® filter and UniGuard® RFI-shielding technology. It accepts interchangeable condenser elements—available for boundary microphones in cardioid, 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 U851R is equipped with self-contained electronics, eliminating the need for an external power module.
Specifications
Microphones | |
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Element | Polarized condenser |
Polar Pattern | Half-cardioid (cardioid in hemisphere above mounting surface) |
Frequency Response | 30 - 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, 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 |
Phantom Power Requirements | 11-52V DC, 4 mA typical |
Switches | Flat, roll-off |
Weight | 9.2 oz (262 g) |
Cable | 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors |
Dimensions | 4.25" (108.0 mm) long, 3.31" (84.0 mm) maximum width, 0.91" (23.0 mm) height |
Output Connector | TB3M-type |
Accessories Included | Soft protective pouch |
Reviews
Downloads
U851R Declaration of Conformity
U851R Frequency Response
U851R Polar Pattern
U851R Submittal Sheet
U851R Specification Sheet