Audio-Technica U891RbO Omnidirectional Condenser Boundary Microphone with Switch

A versatile, phantom-powered, omnidirectional condenser boundary microphone, the U891RbO from Audio-Technica offers remarkable speech intelligibility and transparent sound quality in surface-mount applications and other demanding sound pickup situations. It features a touch-sensitive capacitive-type user switch that can be set to three modes: touch on/off, touch to talk, and touch to mute. Ideal for conference or boardrooms, it captures sound with its sophisticated 80 Hz low-cut UniSteep® filter for reduced pickup of low-frequency (LF) ambient noise, UniGuard® for radio frequency interference (RFI) protection, interchangeable elements with cardioid and hypercardioid polar patterns (these elements are sold separately), and a PivotPoint® rotating connector for easy cable management with no tools required. Durable and discreet, its heavy die-cast case and silicon foam bottom pads minimize surface vibration mic coupling, and houses self-contained electronics, which eliminate the need for an external power module — all in a low-profile design with threaded inserts for optional mounting and added security.

Applications

Surface-mount applications in:

High-quality sound reinforcement • Professional recording and Television • Conference and Boardrooms • Other demanding sound pickup situations

Includes

• U851RbO Omni Boundary Mic
• Soft protective pouch

Features

• Omnidirectional condenser boundary microphone with touch-sensitive capacitive-type user switch
• Integral, phantom-powered, two-state RGB LED indicator displays on/off status of microphone
• 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 of 120° and 100° (additional elements sold separately)
• UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
• Self-contained electronics eliminate need for external power module

Specifications

• Element: Fixed-charge back plate, permanently-polarized condenser
• Polar pattern: Omnidirectional (via the included interchangeable UE-O omni 360° element)
• Frequency response: 20 Hz to 20,000 Hz
• LF rolloff: 80 Hz, 18 dB/octave
• Open circuit sensitivity: -34 dB (19.9 mV) re 1 V @ 1 Pa
• Impedance: 50 Ω
• Maximum input sound level: 132 dB SPL (sound pressure level), 1 kHz @ 1% T.H.D.
• Dynamic range (typical): 111 dB, 1 kHz @ Max SPL
• Signal-to-noise ratio: 73 dB, 1 kHz @ 1 Pa, A-weighted
• Phantom power requirements: 11 - 52 VDC, 9.3 mA
• Switch:
  • Activation: on/off
  • Switch function: touch on/off, momentary on, momentary off
  • LED Color: mic on, mic off
  • Flat, roll-off
• Weight: 8.9 oz. (253 g)
• Dimensions (H x W x D): 0.91" x 3.30" x 4.25" (23 x 83.9 x 108mm)
• Output connector:
  • Microphone: TB3M-type
  • Cable: Male XLR3-type
• Cable: 25' (7.6 m) long x 0.13" (3.2mm) diameter, 2-conductor, shielded cable with TA3F and XLRM connectors
• Optional interchangeable elements (sold separately):
  • UE-C cardioid polar pattern (120°)
  • UE-H hypercardioid polar pattern (100°)
• Note: further information can be found within the "U891RbO User Manual" located under the "Documentation" tab above.