User's Manual

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51976 ©2007 Audio-Technica U.S., Inc. Printed in Japan
• Maximum intelligibility and clean, accurate reproduction for
vocalists, lecturers, stage and television talent, and worship
leaders
• Low-profile design (a mere 5 mm in diameter) is ideal for
applications requiring minimum visibility
• Includes an extensive array of accessories
• Switchable low-frequency roll-off reduces sensitivity to popping
in close vocal use
• 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.
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.
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.
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.
The microphone is RoHS compliant–free from all substances specified
in the EU directive on hazardous substances.
Avoid leaving the microphone in the open sun or in areas where
temperatures exceed 43° C (110° F) for extended periods. Extremely
high humidity should also be avoided.
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 –43 dB (7.0 mV) /
(Phantom / Battery) –46 dB (5.0 mV) re 1V at 1 Pa*
IMPEDANCE (Phantom / Battery) 200 ohms / 250 ohms
MAXIMUM INPUT SOUND LEVEL 138 dB / 116 dB SPL,
(Phantom / Battery) 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical) 108 dB / 86 dB,
(Phantom / Battery) 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
1
64 dB, 1 kHz at 1 Pa*
PHANTOM POWER 11-52V DC, 2 mA typical
REQUIREMENTS
BATTERY TYPE 1.5V AA/UM3
BATTERY CURRENT / LIFE 0.4 mA / 1200 hours typical
(alkaline)
SWITCH Flat, roll-off (recessed)
WEIGHT (less cable and accessories)
MICROPHONE 0.5 g (0.02 oz)
POWER MODULE 102 g (3.6 oz)
DIMENSIONS
MICROPHONE
16.0 mm (0.63") long,
5.0 mm (0.20") diameter
POWER MODULE 145.0 mm (5.71") long,
21.0 mm (0.83") diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
(power module)
CABLE 3.0 m (9.8') long (permanently
attached to microphone), 2.0 mm
(0.08") 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
†
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.
AT899
SCALE IS 5 DECIBELS PER DIVISION
Polar Pattern
200 Hz
LEGEND
5 kHz
1 kHz
8 kHz
240
180
210
270
300
330
0
150
120
90
30
60
same as 1 kHz
12" or more on axis
100
50
200
LEGEND
Roll-off
10k
5k
1k
500
2k
20k
Frequency in Hertz
Frequency Response
Response in dB
10 dB
SUBMINIATURE OMNIDIRECTIONAL
CONDENSER MICROPHONE