U851Rb
divider-line Condenser Boundary Microphone

U851Rb

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U851Rb
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  • Overzicht
  • Gallerij
  • Eigenschappen
  • Specifications
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Overzicht

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. 

Available configurations: 

U851Rb: cardioid polar pattern (120° acceptance angle); 25.0' (7.6 m) cable with TA3F connector at the microphone and XLRM output connector; black finish.

U851RWb: cardioid polar pattern (120° acceptance angle); 25.0' (7.6 m) cable with TA3F connector at the microphone and XLRM output connector; white finish.

U851RbO: omnidirectional polar pattern (360° acceptance angle); 25.0' (7.6 m) cable with TA3F connector at the microphone and XLRM output connector; black finish.

Eigenschappen

  • 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

Microphones
Element Fixed-charge back plate, permanently polarized condenser
Frequentierespons 20-20,000 Hz
Lage frequentie roll-off 80 Hz, 18 dB/octave
Gevoeligheid open circuit -34 dB (19.9 mV) re 1V at 1 Pa
Maximaal geluidingangsniveau 134 dB SPL, 1 kHz at 1% T.H.D.
Dynamisch bereik 108 dB, 1 kHz at Max SPL
Signaal-ruisverhouding 68 dB, 1 kHz at 1 Pa, A-weighted
Vereisten fantoomvoeding 11-52V DC, 4.4 mA
Schakelaars Flat, roll-off
Gewicht 253 g (8.9 oz)
Kabel 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
Afmetingen 0.91" (23.0 mm) H x 3.30" (83.9 mm) W x 4.25" (108.0 mm) D
Uitgangsconnector Microphone: TB3M-type Cable: 3-pin XLRM-type
Optional Interchangeable Elements UE-C cardioid (120°), UE-H hypercardioid (100°), UE-O omnidirectional (360°)
Meegeleverde accessoires Soft protective pouch

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