Audio-Technica U851RW Bedienungsanleitung
Audio-Technica
Mikrofon
U851RW
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• Designed for surface-mount
applications such as high-
quality sound reinforcement,
professional recording,
television, conferencing and
other demanding sound pickup
situations
• 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 radio frequency
interference (RFI)
• Self-contained electronics eliminate need for external power
module
• Small-diameter UniPoint capsule near boundary eliminates phase
distortion and delivers clear, high-output performance
• Heavy die-cast case and non-slip silicon 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 (U851R) and white (U851RW)
The U851R requires 11V to 52V phantom power for operation.
Supplied as a cardioid, the U851R accepts interchangeable
elements to permit selection of angle of acceptance from 100° to
360°.
The microphone should be placed on a flat,
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.
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.
An integral 80 Hz high-pass 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,
air-handling systems, etc.), room reverberation and mechanically
coupled vibrations.
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 connectors, you may
adversely affect the unit's RFI immunity.
NOTE: Placing any object on a surface (such as a conference table)
before its finish is fully cured may result in damage to the finish.
8 kHz
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
Frequency in Hertz
LEGEND 12" or more on axis
Roll-of f
Frequency Response
Response in dB
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51702 ©2005 Audio-Technica U.S., Inc. Printed in U.S.A.
U851R / U851RW
U851R/ U851RW 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 134 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical) 108 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO168 dB, 1 kHz at 1 Pa*
PHANTOM POWER 11-52V DC, 4 mA typical
REQUIREMENTS
SWITCH Flat, roll-off
WEIGHT 9.2 oz (262 g)
DIMENSIONS 4.25" (108.0 mm) long,
3.31" (84.0 mm) maximum width,
0.91" (23.0 mm) height
OUTPUT CONNECTOR TB3M-type
CABLE 25.0' (7.6 m) long, 0.13" (3.2 mm)
diameter, 2-conductor, shielded
cable with TA3F and XLRM-type
connectors
OPTIONAL INTERCHANGEABLE UE-H hypercardioid (100°)
ELEMENTS UE-O omnidirectional (360°)
ACCESSORY FURNISHED Soft protective pouch
†In the interest of standards development, A.T.U.S. offers full details on its test
methods to other industry professionals on request.
*1 Pascal = 10 dynes/cm2= 10 microbars = 94 dB SPL
1Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
CARDIOID CONDENSER
BOUNDARY MICROPHONES
60°
IDEAL
WORKING
ANGLE
Produktspezifikationen
| Marke: | Audio-Technica |
| Kategorie: | Mikrofon |
| Modell: | U851RW |
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