• 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"
• Superior off-axis rejection for maximum gain before feedback
• Small-diameter UniPoint capsule near boundary eliminates phase distortion and delivers clear, high-output performance
• Low-profile design with low-reflectance finish for minimum visibility

The versatile U891RX 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.

General

• 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: 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:
• Activation: on/off; 
• Switch function: press on/off, 
• momentary on, momentary off; 
• Flat, roll-off
• OUTPUT CONNECTOR: TB3M-type
• CABLE: 7.6 m (25.0') long, 3.2 mm (0.13") diameter, 2-conductor, shielded cable with TA3F-type and XLRM-type connectors

Physical & Dimensions

• Max. Length: 108mm
• Max. Width: 84mm
• Max. Height: 23mm
• Weight: 264g