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UniPoint Review - Sound & Video Contractor
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pdf 238.70 KBU851R, U851RW Specification Sheet
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U851R Cardioid Condenser Boundary Microphone
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.- Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
- PivotPoint® rotating output connector allows cable to exit from either the rear or the bottom of the microphone
- Superior off-axis rejection for maximum gain before feedback
- UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
- 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 silicon foam bottom pads minimize coupling of surface vibration to the microphone
- Low-profile design with low-reflectance finish for minimum visibility
- Available in two colors: black (U851R) and white (U851RW)
| SPECIFICATIONS | |
|---|---|
| ELEMENT | Fixed-charge back plate, permanently 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 |
| IMPEDANCE | 200 ohms |
| MAXIMUM INPUT SOUND LEVEL | 134 dB SPL, 1 kHz at 1% T.H.D. |
| DYNAMIC RANGE (typical) | 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 |
| SWITCH | Flat, roll-off |
| WEIGHT | 9.2 oz (262 g) |
| DIMENSIONS | 4.25" (108.0 mm) long,
3.31" (84.0 mm) maximum width, 0.91" (23.0 mm) height |
| OUTPUT CONNECTOR | TB3M-type |
| CABLE | 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors |
| OPTIONAL INTERCHANGEABLE ELEMENTS | UE-H hypercardioid (100°);
UE-O omnidirectional (360°) |
| ACCESSORY FURNISHED | Soft protective pouch |
| SPECIFICATION GRAPHS | ||
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| Click on the chart to view the larger image | ||
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Conditions
U851R : Cardioid Condenser Boundary Microphone
