Audio Technica ES991 Installation And Operation Manual
[
Description
]
omnidirectional (360°) elements are available.
The ES991 is designed with dual integral
windscreens to ensure ultimate security against
wind noise and plosives.
The integral power module can be powered
from any external 11V to 52V DC phantom
power supply. Low-frequency roll-off (120 Hz, 12
dB/octave) is integral to the microphone’s design.
The microphone is enclosed in a sturdy metal
housing with a low-reflectance black finish. It
features a 6-pin XLRM-type connector insert at
its base, allowing it to be plugged directly into a
6-pin XLRF-type panel jack or microphone cable
(a 30' “Y” cable that splits into two 3-pin XLRMtype connectors is included).
The ES991 is a dual-element cardioid
condenser gooseneck microphone with an
integral dual power module. It is designed
especially for applications requiring separate
miking for PA and broadcast. The circuit grounds
for each channel are completely isolated, greatly
reducing the potential for hum. The smalldiameter design with gooseneck segment
permits flexible positioning while maintaining
a smooth, contoured appearance.
Each of the cardioid elements in the
microphone is shock mounted. The cardioid
polar pattern of the elements provides a 120°
angle of acceptance. Additional userinterchangeable hypercardioid (100°) and
Engineered Sound
and/or remote feeds. Connect the red output
(Channel A) to the primary in-house feed.
Connect the blue output (Channel B) to the
remote feed.
The high output of this microphone can
overload the input stages of some mixers and
preamps. Included in the microphone circuitry is
a 15 dB pad that can be used if overload occurs.
This switch is recessed in the power module.
While a modern condenser microphone
is not unduly sensitive to the environment,
temperature extremes can be harmful. Avoid
leaving the microphone in the open sun or in
areas where temperatures exceed 110° F (43° C)
for long periods of time. Extremely high
humidity should also be avoided.
The ES991 requires a phantom power supply
of 11–52V DC for each element. Output is
low-impedance balanced. The balanced signal
appears across Pins 2 and 3, while the ground
(shield) connection is Pin 1. Output is phased so
that positive acoustic pressure produces positive
voltage at Pin 2, in accordance with industry
convention.
The microphone is intended for use with a
desk or floor stand and comes with the AT8407
stand adapter. Use the adapter to attach the
microphone to a microphone stand with a
5
/8"–27
thread. Attach the included 6-pin Neutrik
XLRF-type shielded cable directly to the 6-pin
XLRM-type output connector. The 30' cable
splits the signal into two 3-pin XLRM-type
connectors, which can be connected to in-house
The microphone shall be a dual-element,
fixed-charge condenser with a frequency
response of 90 Hz to 15,000 Hz and a
cardioid polar pattern with uniform 120° angle
of acceptance. It shall contain two shockmounted cardioid elements with isolated
grounds. It shall operate from an external 11V
to 52V DC phantom power source. It shall be
capable of handling sound input levels up to 138
dB with a dynamic range of 109 dB. It shall have
a fixed low-frequency roll-off of 120 Hz, 12
dB/octave. It shall include a 15 dB pad switch.
Output shall be low-impedance balanced (250
ohms).
The microphone shall be a small-diameter
rigid-pipe design with a flexible gooseneck
segment. The microphone shall have a
[
Architects and Engineers Specifications
]
self-contained power module with a 6-pin
XLRM-type connector at the base for direct
connection to a 6-pin XLRF-type panel jack or
for use with the included 30' splitter cable. The
cable shall connect to the microphone by a 6-pin
XLRF-type connector and shall terminate in two
3-pin XLRM-type connectors. An included stand
clamp shall permit attaching the microphone
directly to a standard
5
/8"–27 thread.
The microphone’s overall length shall be
21.57" (548.0 mm). Head diameter shall be 1.51"
(38.4 mm). Base diameter shall be 0.99" (25.1
mm).The microphone shall weigh 8.8 oz (250 g).
Finish shall be low-reflectance black.
The Audio-Technica ES991 is specified.
[
Installation and Operation
]
[
[
ES991
Dual-element
Cardioid Condenser
Gooseneck Microphone
Form No.0309-2128-00 P51563 © 2003 Audio -Technica U.S., Inc. Printed in U.S.A.
Elements Two fixed-charge
back plate
permanently
polarized condensers
Polar Pattern Cardioid
Frequency Response 90–15,000 Hz
Low-frequency Roll-off Fixed 120 Hz,
12 dB/octave
Open Circuit Sensitivity – 41 dB (8.9 mV)
re 1V at 1 Pa
*
Impedance 250 ohms
Maximum Input Sound 138 dB SPL, 1 kHz at
Level 1% T.H.D.
Dynamic Range 109 dB, 1 kHz at
(Typical) Max SPL
Signal-to-noise Ratio
1
65 dB, 1 kHz at 1 Pa
*
Switch Normal/–15 dB
Phantom Power 11–52V DC, 3 mA
Requirements typical
Weight 8.8 oz (250 g)
Dimensions 21.57" (548.0 mm)
maximum length,
1.51" (38.4 mm)
head diameter, 0.99"
(25.1 mm) base
diameter
Output Connector Integral 6-pin
Neutrik XLRM
Cable 30' (9.1 m)
6-conductor shielded
“Y” cable–6-pin
XLRF to two 3-pin
XLRM
Accessories Furnished AT8407 stand clamp,
6-pin panel-mount
XLRF-type
connector
Optional ESE-H hypercardioid
Interchangeable (100°)
Elements ESE-O
omnidirectional
(360°)
†
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
1
Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
One-Year Limited Warranty
Audio-Technica microphones and accessories purchased in the U.S.A. are warranted for one year from date of
purchase by Audio-Technica U.S., Inc. (A.T.U.S.) to be free of defects in materials and workmanship. In event of such
defect, product will be repaired promptly without charge or, at our option, replaced with a new product of equal or
superior value if delivered to A.T.U.S. or an Authorized Service Center, prepaid, together with the sales slip or other
proof of purchase date.
Prior approval from A.T.U.S. is required for return.
This warranty excludes defects due
to normal wear, abuse, shipping damage, or failure to use product in accordance with instructions. This warranty
is void in the event of unauthorized repair or modification.
For return approval and shipping information,
contact the Service Department, Audio-Technica U.S., Inc., 1221
Commerce Drive, Stow, Ohio 44224.
Except to the extent precluded by applicable state law,
A.T.U.S. will have no liability for any consequential,
incidental, or special damages; any warranty of merchantability or fitness for particular purpose expires
when this warranty expires.
This warranty gives you specific legal rights, and you may have other rights, which vary from state to state.
Outside the U.S.A., please contact your local dealer for warranty details.
[
ES991 Specifications
†
]
[
Polar Pattern
]
SCALE IS 5 DECIBELS PER DIVISION
200 Hz
LEGEND
5 kHz
1 kHz
8 kHz
240
180
210
270
300
330
0
150
120
90
30
60
[
Visit our Web site at www.audio-technica.com
]
Audio-Technica U.S., Inc.
1221 Commerce Drive, Stow, Ohio 44224
[
Frequency Response
]
12" or more on axis
10050200
LEGEND
10k
5k
1k
500
2k
20k
Frequency in Hertz
Response in dB
10 dB
[
Dimensions
]
548.0 mm
21.57"
1.51"
38.4 mm
2.20"
56.0 mm
8.1 mm
0.32"
25.1 mm
0.99"
93.4 mm
3.68"
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