Audio-Technica U891RX
Cardioid Condenser Boundary Microphone in Black

OUR PART #  U891RX


Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891R cardioid condenser 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 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.

Audio-Technica U891RX Features:

  • Designed for surface-mount applications such as high-quality soundreinforcement, 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 therear 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 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)

Audio-Technica U891RX Specifcations:

  • ELEMENT: Fixed-charge back plate, permanently polarized condenser
  • POLAR PATTERN: Half-cardioid (cardioid in hemisphere above mounting surface)
  • FREQUENCY RESPONSE: 30Hz-20kHz
  • 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
  • WEIGHT: 264 g (9.3 oz)
  • DIMENSIONS: 108.0 mm (4.25") maximum length, 84.0 mm (3.31") maximum width, 23.0 mm (0.91") maximum height
  • 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
  • OPTIONAL INTERCHANGEABLE ELEMENTS: UE-O omnidirectional (360°); UE-Hhypercardioid (100°)
  • ACCESSORY FURNISHED: Soft protective pouch

Audio-Technica U891RX
Cardioid Condenser Boundary Microphone in Black

OUR PART #  U891RX

Product Information:

Designed to deliver easy, flexible control in conference and boardroom installations, the versatile U891R cardioid condenser 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 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.

Audio-Technica U891RX Features:

  • Designed for surface-mount applications such as high-quality soundreinforcement, 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 therear 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 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)

Audio-Technica U891RX Specifcations:

  • ELEMENT: Fixed-charge back plate, permanently polarized condenser
  • POLAR PATTERN: Half-cardioid (cardioid in hemisphere above mounting surface)
  • FREQUENCY RESPONSE: 30Hz-20kHz
  • 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
  • WEIGHT: 264 g (9.3 oz)
  • DIMENSIONS: 108.0 mm (4.25") maximum length, 84.0 mm (3.31") maximum width, 23.0 mm (0.91") maximum height
  • 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
  • OPTIONAL INTERCHANGEABLE ELEMENTS: UE-O omnidirectional (360°); UE-Hhypercardioid (100°)
  • ACCESSORY FURNISHED: Soft protective pouch
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