Audio Technica U891R Condenser Boundary Microphone

Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891R cardioid condenser boundary microphone features a touch-sensitive on-off switch that can be set to three modes: press-on/press-off, press to talk, and press to mute. The phantom-powered microphone is equipped with a unique PivotPoint rotating output connector and an LED status indicator.

UniGuard innovations offer unsurpassed immunity from radio frequency interference; interchangeable elements are available in cardioid, hypercardioid and omnidirectional polar patterns; an 80 Hz low-cut UniSteep filter reduces pickup of low-frequency ambient noise. The microphone's heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone. The unit's self-contained electronics eliminate the need for an external power module.

Features
Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations

Ultra-quiet electronic switch can be set to any of three operating modes: "touch-on/ touch-off," "touch-to-talk" and "touch-to-mute"

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)

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

Technical Info

Element: Fixed-charge back plate, permanently polarized condenser

Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)

Freq. Response: 30-20,000 Hz

LF Roll-Off: 80 Hz, 18 dB/octave

Open Circuit Sensitivity: -34 dB (19.9 mV) re 1V at 1 Pa

Impedance: 200 ohms

Max. Input Sound Level: 130 dB SPL, 1 kHz at 1% T.H.D.

Dynamic Range (typical): 104 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

Switches: Touch-sensitive control: on/off;
Switch function: touch on/off, momentary on, momentary off;
Flat, roll-off

Weight: 9.3 oz (264 g)

Dimensions: 4.25 in. (108.0 mm) long,
3.31 in. (84.0 mm) maximum width,
0.91 in. (23.0 mm) height

Output Connector: TB3M-type

Cable: 25.0 ft (7.6 m) long, 0.13 in. (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectors

Accessory Furnished: Soft protective pouch