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Vaddio U891Rx Cardioid Condenser Boundary Microphones User Manual
Features
- Activation switch can be set to any of three operating modes: “press-on/press-off,” “press-to-talk” and “press-to-mute”
- PivotPoint® rotating output connector allows cable to exit from either the rear or the bottom of the microphone
- Small-diameter UniPoint cardioid capsule near boundary eliminates phase distortion and delivers clear, high-output performance
- Superior off-axis rejection for maximum gain before feedback
- UniGuard RFI-shielding technology offers outstanding rejection ® of radio frequency interference (RFI)
- Self-contained electronics eliminate need for external power module.
- UniSteep filter provides a steep low-frequency attenuation to ® improve sound pickup without affecting voice quality
- Available interchangeable elements permit angle of acceptance from 100° to 360°
- 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
- Available in two colors: black (U891Rx) and white (U891RWx)
Description
- The U891Rx is a wide-range condenser microphone with a cardioid polar pattern. It is designed for surface-mount applications such as high-quality sound reinforcement, conferencing, professional recording, and other demanding sound pickup applications.
- The microphone features an activation switch that can be set (via a switch on the bottom of the microphone) to any of three operating modes: “press-on/press-off,” “press-to-talk” and “press-to-mute”.
- The microphone requires 11V to 52V phantom power for operation.
- The microphone is equipped with UniGuard RFI-shielding technology, ® which offers outstanding rejection of radio frequency interference (RFI).
- The microphone’s cardioid polar pattern provides a 120° angle of acceptance (cardioid in hemisphere above mounting surface). Additional interchangeable elements with omnidirectional (360°) and hypercardioid (100°) pickup patterns are available.
- The microphone includes a 7.6 m (25′) output cable terminating in special TA3F-type and XLRM-type connectors designed to optimize RFI immunity. The output of the microphone is a TB3M-type connector. The microphone is equipped with Audio -Technica’s unique PivotPoint rotating ® output connector.
Installation and Operation
- The U891Rx requires 11V to 52V phantom power for operation.
- Output is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot”— positive acoustic pressure produces positive voltage at Pin 2.
- The microphone should be placed on a at, unobstructed mounting surface, with the front of the microphone facing the sound source.
- The sound source should not be below, or higher than 60° above, the plane of the mounting surface.
- An activation switch on the microphone offers three choices of switching bmodes. The SW. FUNCTION switch located on the bottom of the bmicrophone selects the desired mode. TOUCH ON/OFF: Press the on/ off switch once to turn the microphone on; press again to turn off. MOM. ON (momentary on): Microphone is on only while the switch is being pressed (“press to talk”). MOM. OFF (momentary off): Microphone is off only while the switch is being pressed (“press to mute”). The red LED on the top of the unit indicates when the microphone is “on.”
- An integral 80 Hz high-pass UniSteep filter provides easy switching ® from a flat frequency response to a low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise (such as traffic, airhandling systems, etc.), room reverberation and mechanically coupled vibrations. To engage the UniSteep filter, slide the switch toward the ® “bent” line.
- The microphone’s PivotPoint rotating output connector allows the cable ® to exit from either the rear or the bottom of the microphone without the need for tools or disassembly.
- Avoid leaving the microphone in the open sun or in areas where temperatures exceed 110° F (43° C) for extended periods. Extremely high humidity should also be avoided.
Note:
- Audio-Technica has developed a special RFI-shielding mechanism, which is an integral part of the connectors in the UniPoint line. If you remove or replace the connector, you may adversely affect the unit’s RFI immunity. Audio-Technica offers a crimp tool (ATCT) and RFI shields that enable you to shorten the cable and correctly reinstall the connector while maintaining the highest level of RFI immunity.
- Placing any object on a surface (such as a conference table) before its finish is fully cured may result in damage to the finish.
Specifications
- 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
- 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°) hunornardinin (1009)
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