Audio Technica AT803b Specifications
8 kHz
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
F
requency in Hertz
LEGEND
12" or more on axis
Roll-off
Frequency Response
Response in dB
AT803b MINIA
TURE OMNIDIRECTIONAL CONDENSER MICROPHONE
• High intelligibility for lecturers and stage/TV performers
• Provides excellent yet unobtrusive sound pickup
• Switchable low-frequency roll-off
• Operates on battery or phantom power
The AT803b 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 belo
w 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 AT803b 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: Remove the cap from the top of the power
module. Insert a fresh 1.5V AA battery (“+” end toward the
cap release button), then reassemble the power module. 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.
o avoid phase cancellation and poor sound, all mic cables must be
T
wired consistently: Pin 1-to-Pin 1, etc.
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 microphone’
s sensitivity to popping in close vocal use.
It also reduces the pickup of low-frequency ambient noise (such
as traffic, air-handling systems, etc.), room reverberation and
mechanically coupled vibr
ations.
AT803b SPECIFICATIONS
†
ELEMENT Fixed-charge back plate
permanently polarized
condenser
POLAR PATTERN Omnidirectional
FREQUENCY RESPONSE 30-20,000 Hz
LOW FREQUENCY ROLL-OFF 80 Hz, 18 dB/octave
OPEN CIRCUIT SENSITIVITY –45 dB (5.6 mV) /
(Phantom / Battery) –46 dB (5.0 mV) re 1V at 1 Pa*
IMPEDANCE (Phantom / Battery) 200 ohms / 270 ohms
MAXIMUM INPUT SOUND LEVEL 135 dB / 121 dB SPL,
(Phantom / Battery) 1 kHz at 1% T.H.D.
DYNAMIC RANGE, (typical) 106 dB / 92 dB,
(Phantom / Battery) 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
1
65 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 Off, on-flat, on-roll-off
WEIGHT (less cable and accessories)
MICROPHONE 0.09 oz (2.5 g)
POWER MODULE 4.9 oz (139 g)
DIMENSIONS
MICROPHONE 0.81" (20.5 mm) long,
0.39" (10.0 mm) diameter
POWER MODULE 3.31" (84.0 mm) H x
2.48" (63.0 mm) W x
0.87" (22.0 mm) D
OUTPUT CONNECTOR Integral 3-pin XLRM-type
(power module)
CABLE 6' (1.8 m) long (permanently
attached to microphone), 0.10"
(2.6 mm) diameter, 2-conductor,
shielded cable with TA3F-type
connector
ACCESSORIES FURNISHED AT8417 clothing clip;
AT8531 power module;
AT8116 windscreen; battery;
protective carrying case
†
In the interest of standards development, A.T.U.S. offers full details on its test
methods to other industr
*1 Pascal = 10 dynes /cm
1
Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice
y professionals on request.
2
= 10 microbars = 94 dB SPL
.
Avoid leaving the microphone in the open sun or in areas where
temper
atures 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
echnica Limited,
Audi
T
-
o
Old Lane, Leeds L
1 8AG England
1
S
www.audio-technica.com
P51665-01 ©2006 Audio-Technica U.S., Inc. Printed in Japan
Loading...