Owner's Manual

ATM450
CARDIOID
CONDENSER
INSTRUMENT
MICROPHONE
•
Unique side-address stick design maximizes placement options
with minimal obstructions
•
Uncompromising sound quality for overheads, percussion,
acoustic guitar, strings and other acoustic instruments
• Integral
80
Hz
HPF
switch and 10
dB pad
•
Durable performance for professional applications
•
Cardioid polar pattern reduces pickup of sounds from the sides
and
rear,
improving isolation of desired sound source
•
Rugged, all-metal
design and construction for years of trouble-free
use
• Includes
isolation clamp for shock protection, secure mounting and
easy positioning
The
ATM450
is
intended for use
in
professional applications where
remote power is available. It
requires
11
V to 52V
DC
phantom
power, which may be provided by a mixer or console, or by a
separate, in-line source such
as
the Audio-Technica
AT8801
single-
channel or
CP8506
four-channel phantom power supplies.
Output
from
the
microphone'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.
To
avoid phase
cancellation
and poor sound,
all mic cables must
be
wired consistently:
Pin
1-to-Pin
1,
etc.
An
integral
80
Hz
hi-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.
The ATM450 is
also
equipped with a switchable 1
0
dB pad that
lowers the microphone's sensitivity, thus providing higher
SPL
capability for
flexible
use with a wide range of performers and
system configurations.
The
ATM450
includes
an
AT8471
isolation clamp
to
provide secure
mounting, versatile positioning and effective dampening of unwanted
mechanical noise.
Avoid leaving the microphone
in
the open sun or
in
areas where
temperatures
exceed
11
oo
F
(43°
C)
for
extended
periods.
Extremely high humidity should
also
be
avoided.
ARTIST
SERIESrM
ATM450 SPECIFICATIONSt
ELEMENT
POLAR
PATTERN
FREQUENCY RESPONSE
LOW FREQUENCY ROLL-OFF
OPEN CIRCUIT SENSITIVITY
IMPEDANCE
MAXIMUM INPUT SOUND
LEVEL
DYNAMIC
RANGE (typical)
Fixed-charge back plate
permanently polarized condenser
Cardioid
40-20,000 Hz
80 Hz, 18 dB/octave
-41
dB (8.9
mV)
re
1V
at 1 Pa*
200
ohms
152 dB
SPL, 1 kHz at
1%
T.H.D.
127 dB, 1 kHz at Max
SPL
SIGNAL-TO-NOISE
RATI0
1
69 dB, 1 kHz at 1 Pa*
PHANTOM
POWER REQUIREMENTS 11-52V DC,
3.5
mA
typical
SWITCHES
WEIGHT
DIMENSIONS
OUTPUT CONNECTOR
Flat, roll-off; 1
0
dB pad
98 g (3.5 oz)
126.9 mm
(5.00")
long,
21.0 mm
(0.83")
diameter
Integral
3-pin XLRM-type
ACCESSORIES FURNISHED
AT8471 isolation clamp for
Sfa''-27
threaded stands;
Sfe"-27
to
3fs''-16
threaded adapter; windscreen; soft
protective pouch
tin
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/em' =
10 microbars = 94 dB
SPL
' Typical,
A-weighted, using Audio Precision System One.
Specifications are subject to change
without notice.
Polar
Pattern
Frequency Response
111
1
11
1
1111
111
11
11
..
:·
50
1
00
500
1k
2k
511.
1
011.
20k
Frequency
in
Hertz
LE
G
EN
D
--
12•ormoreonaxis
----
Roll-off
@audio·technica®
Audio-Technica U.S., Inc.,
1221
Commerce
Drive,
Stow, Ohio
44224
Audio-Technica
Limited,
Old
Lane, Leeds
LS11
SAG
England
www.audio-technica.com
~
-
(
E
P51803
©12006
Audio-Technica
U.S., Inc.
Printed
in
China