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U891RCb
User Manual
CARDIOID CONDENSER BOUNDARY MICROPHONE
Introduction
Thank you for purchasing this product. Before using the product, read through the
user manual to ensure that you will use the product correctly.
Please keep this manual for future reference.
Features
•Cardioid condenser boundary microphone with local or remote switching
•Designed for surface-mount applications such as high-quality sound
reinforcement, conferencing, distance learning and other demanding sound
pickup situations
•The capacitive touch switch can be set to any of three operating modes:
“touch-on/touch-off”, “touch-to-talk” and “touch-to-mute”
•Integral, phantom-powered, two-state RGB LED indicator (controlled locally or
remotely) displays on/off status of microphone
•External contact closure capability permits control of remote devices from
microphone switch
•PivotPoint™ rotating output connector allows cable to exit from either the rear
or the bottom of the microphone
•Small-diameter UniPoint™ capsule near boundary eliminates phase distortion
and delivers clear, high-output performance
•UniGuard™ RFI-shielding technology offers outstanding rejection of radio
frequency interference (RFI)
•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 black finish for minimum visibility
•Threaded inserts on bottom of microphone allow it to be mounted with screws
for increased security
Specifications
Element
Polar pattern Cardioid
Frequency response 20 - 20,000 Hz
Low frequency roll-o 80 Hz, 18 dB/octave
Open circuit sensitivity -34 dB (19.9 mV) (0dB=1V/Pa, 1kHz)
Impedance 50 ohms
Maximum input sound level 130 dB SPL (1kHz at 1% THD)
Dynamic range 104 dB (1kHz at Max SPL)
Signal-to-noise ratio 68 dB (1kHz at 1Pa, A-weighted)
Phantom power requirements 11 - 52 V DC, 9.3 mA
Switches
Dimensions
Output connector
Optional interchangeable elements UE-O omnidirectional (360°), UE-H hypercardioid (100°)
Included accessories
• 1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL
For product improvement, the product is subject to modification without notice.
Fixed-charge back plate, permanently polarized
condenser
Noise 26 dB SPL (A-weighted)
Low cut: on/off; Switch function: touch on/off,
momentary on, momentary off; Control: local, remote,
LED remote
Weight 253 g (8.9 oz)
23 mm (0.91") × 83.9 mm (3.3") × 108 mm (4.25")
(H×W×D)
TB5M-type (Microphone)
Unterminated-type (Cable)
7.6 m (24.9') Microphone cable (TA5F, unterminated), Pouch
Polar pattern
300˚
270˚
240˚
SCALE IS 5 DECIBELS PER DIVISION
Frequency response
50 100 200 500 1k 2k 5k 10k 20k20
LEGEND
Dimensions
50.2
108
50
83.9
330˚
210˚
180˚
Frequency in Hertz
0°, 50 cm
0°, 50 cm, Low cut
30˚
150˚
2-M3 P=0.5
23
60˚
120˚
LEGEND
200Hz
90˚
1kHz
5kHz
8kHz
10 dB
57
(Unit: mm)
Included accessories
Audio-Technica Corporation
2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan
©2019 Audio-Technica Corporation
Global Support Contact: www.at-globalsupport.com
Made in Japan
142419860-01-01 ver.1 2019.01.15