Click here for a PDF leaflet on this mic.

Click here for a PDF leaflet on this mic.
AT899
SUBMINIATURE OMNIDIRECTIONAL CONDENSER MICROPHONE
AT899 SPECIFICATIONS†
ELEMENT
Fixed-charge back plate
permanently polarized
condenser
POLAR PATTERN
Omnidirectional
FREQUENCY RESPONSE
20-20,000 Hz
LOW-FREQUENCY ROLL-OFF
80 Hz, 12 dB/octave
OPEN CIRCUIT SENSITIVITY
(Phantom / Battery)
–43 dB (7.0 mV) /
–46 dB (5.0 mV) re 1V at 1 Pa*
IMPEDANCE (Phantom / Battery)
200 ohms / 250 ohms
MAXIMUM INPUT SOUND LEVEL
(Phantom / Battery)
138 dB / 116 dB SPL,
1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical)
(Phantom / Battery)
108 dB / 86 dB,
1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO1
64 dB, 1 kHz at 1 Pa*
PHANTOM POWER
REQUIREMENTS
11-52V DC, 2 mA typical
BATTERY TYPE
1.5V AA/UM3
BATTERY CURRENT / LIFE
0.4 mA / 1200 hours typical
(alkaline)
• Maximum intelligibility and clean, accurate reproduction for
vocalists, lecturers, stage and television talent, and worship
leaders
SWITCH
Flat, roll-off (recessed)
WEIGHT (less cable and accessories)
MICROPHONE
POWER MODULE
0.02 oz (0.5 g)
3.6 oz (102 g)
• Low-profile design (a mere 5 mm in diameter) is ideal for
applications requiring minimum visibility
DIMENSIONS
MICROPHONE
POWER MODULE
• Includes an extensive array of accessories
OUTPUT CONNECTOR
(power module)
Integral 3-pin XLRM-type
CABLE
9.8' (3.0 m) long (permanently
attached to microphone), 0.08"
(2.0 mm) diameter, 2-conductor,
shielded cable with TA3F output
connector that mates with TB3M
jack on power module
ACCESSORIES FURNISHED
AT8537 power module; AT8439
cable clip; clothing clip base;
viper clip base; magnet clip
base and plate with lanyard;
three single mic holders;
two double mic holders;
two element covers;
two windscreens; battery;
protective carrying case
• Operates on battery or phantom power
The AT899 is designed to be worn as a lavalier or hidden in loose
clothing or in the hair. For use as a lavalier, attach the microphone
about six inches below the chin. Anticipate movements that may
cause the microphone to rub against or be covered by clothing, and
position the microphone to avoid it.
The included single and double mic holders are interchangeable
with all the bases. To change the holders, simply remove original
holder and snap in the desired one. When using the AT899
in extremely close situations, slip the included open-pore foam
windscreen over the mic to reduce wind noise or “popping.” Use the
included element cover to protect the microphone element from
contaminants.
CAUTION! To avoid possible injury, use caution when affixing the
AT899 viper clip to clothing. The pins are sharp and may puncture
skin. For best results, ensure that pin ends rest on outside of
clothing.
†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 /cm 2 = 10 microbars = 94 dB SPL
1
Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
Polar Pattern
Frequency Response
0
330
The AT899 requires 11-52V DC phantom power, or a 1.5V AA
battery for operation. A battery need not be in place for phantom
power operation.
30
300
60
10 dB
90
270
Battery installation: Unscrew the base of the power supply unit and
insert one AA battery into the battery compartment, being certain to
observe battery polarity as marked. Then simply screw the base
shut. Alkaline batteries are recommended for longest life. Remove
the battery during long-term storage.
240
120
210
50
150
100
1k
2k
5k
10k
20k
Frequency in Hertz
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
500
200
180
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
12" or more on axis
Roll-off
same as 1 kHz
Output from the power module’s XLRM-type connector 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.
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.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51669-EN
©2004 Audio-Technica U.S., Inc.
Printed in Japan
Response in dB
• Switchable low-frequency roll-off reduces sensitivity to popping
in close vocal use
0.63" (16.0 mm) long,
0.20" (5.0 mm) diameter
5.71" (145.0 mm) long,
0.83" (21.0 mm) diameter
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