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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
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 |
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