Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891R cardioidcondenser boundary microphone features an activation 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 radiofrequency interference; interchangeable elements are available in cardioid, hypercardioid and omnidirectionalpolar 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.
Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations
An activation 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 radiofrequency interference (RFI)
Small-diameter UniPoint capsule near boundary eliminates phasedistortion and delivers clear, high-output performance
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
Improved switch design
Available in two colors: black (U891Rx) and white (U891RWx)
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 FREQUENCYROLL-OFF: 80 Hz, 18 dB/octave
OPEN CIRCUIT SENSITIVITY: -34 dB (19.9 mV) re 1V at 1 Pa
IMPEDANCE: 200 ohms
MAXIMUM INPUT SOUNDLEVEL: 130 dBSPL, 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
Audio-Technica U891Rx Cardioid Condenser Boundary Microphone with Switch (Black)
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