U851Rb
Condenser Boundary Microphone

U851Rb

Product Options:

U851Rb
  • Overview
  • Gallery
  • Features
  • Specifications

Overview

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.

Features

  • 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
Frequency Response 20-20,000 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 SPL, 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, A-weighted
Phantom Power Requirements 11-52V DC, 4.4 mA
Switches Flat, roll-off
Weight 253 g (8.9 oz)
Cable 25.0' (7.6 m) long, 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
Dimensions 0.91" (23.0 mm) H x 3.30" (83.9 mm) W x 4.25" (108.0 mm) D
Output Connector Microphone: TB3M-type Cable: 3-pin XLRM-type
Optional Interchangeable Elements UE-C cardioid (120°), UE-H hypercardioid (100°), UE-O omnidirectional (360°)
Accessories Included Soft protective pouch

Reviews

Q&A

Downloads

Wireless Essentials® Accessory Microphones and Input Cables Specification Sheet

Current Location English / $ USD

Change your location

United States

United States

Europe

Albania
Andorra
Armenia
Azerbaijan
Bosnia & Herzegovina
Georgia
Iceland
United Kingdom
Germany
France
Netherlands
Spain
Hungary
Austria
Bulgaria
Croatia
Cyprus
Czechia
Denmark
Estonia
Finland
Greece
Ireland
Italy
Latvia
Lithuania
Luxembourg
Malta
Poland
Portugal
Romania
Slovakia
Slovenia
Sweden
Ukraine
Turkey
Switzerland
Serbia
San Marino
Norway
North Macedonia
Montenegro
Monaco
Liechtenstein
Kazakhstan

Canada

Latin America

Argentina
Bolivia
Brazil
Chile
Colombia
Costa Rica
Cuba
Dominican Republic
Ecuador
El Salvador
Guatemala
Haiti
Honduras
Mexico
Nicaragua
Panama
Paraguay
Peru
Uruguay
Venezuela

Africa

Algeria
Angola
Benin
Botswana
Burkina Faso
Cameroon
Cape Verde
Central African Republic
Comoros
DR Congo
Congo Republic
Djibouti
Egypt
Equatorial Guinea
Eritrea
Eswatini
Ethiopia
Gabon
Gambia
Ghana
Guinea
Guinea-Bissau
Ivory Coast
Kenya
Lesotho
Liberia
Libya
Madagascar
Malawi
Mauritania
Mauritius
Morocco
Mozambique
Namibia
Nigeria
Rwanda
Sao Tome and Principe
Senegal
Seychelles
Sierra Leone
Somalia
South Africa
Sudan
Tanzania
Tunisia
Uganda
Zambia
Zimbabwe

Asia

Vietnam
Yemen
Afghanistan
Bahrain
Bangladesh
Bhutan
Brunei
Cambodia
China
Hong Kong
India
Indonesia
Iran
Iraq
Israel
Japan
Jordan
Kuwait
Kyrgyzstan
Laos
Lebanon
Macao
Malaysia
Maldives
Mongolia
Myanmar
Nepal
Oman
Pakistan
Philippines
Qatar
Saudi Arabia
Singapore
South Korea
Sri Lanka
Syria
Taiwan, Province of China
Tajikistan
Thailand
Timor-Leste
Turkmenistan
United Arab Emirates
Uzbekistan
Vietnam
Yemen

Oceania

Australia
Fiji
Kiribati
Marshall Islands
Micronesia
Nauru
New Zealand
Palau
Papua New Guinea
Samoa
Solomon Islands
Tonga
Tuvalu
Vanuatu
Moldova