Audio-Technica AT4047 Microphone User Manual


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• Transformer-coupled output and a specially tuned element
provide warm sonic characteristics reminiscent of early F.E.T.
studio microphone designs
• Exceptionally wide dynamic range, low self-noise and high SPL
capability for maximum versatility
• Dual-diaphragm capsule design maintains precise cardioid
pattern definition across the full frequency range of the
microphone
• Precision-machined, nickel-plated brass, acoustic element baffle
provides enhanced element stability and optimal sensitivity
• State-of-the-art surface-mount electronics ensure compliance
with A-T’s stringent consistency and reliability standards
The AT4047/SV is intended for use in professional applications
where remote power is available. It requires 48V 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 and 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 high-pass filter provides easy switching from a flat
frequency response to a low-end roll-off. The high-pass 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 vibrations.
In use, secure the cable to the mic stand or boom, leaving a slack
loop at the mic. This will ensure the most effective shock isolation
and reduce the possibility of accidentally pulling the microphone out
of its mount.
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.
One-Year Limited Warranty
Audio-Technica brand products 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, or
removal or defacing of the product labeling.
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.
AT4047/SV SPECIFICATIONS
†
ELEMENT Externally polarized (DC bias)
condenser
POLAR PATTERN Cardioid
FREQUENCY RESPONSE 20-18,000 Hz
LOW FREQUENCY ROLL-OFF 80 Hz, 12 dB/octave
OPEN CIRCUIT SENSITIVITY –35 dB (17.7 mV) re 1V at 1 Pa*
IMPEDANCE 250 ohms
MAXIMUM INPUT SOUND LEVEL 149 dB SPL, 1kHz at 1%T.H.D.;
159 dB SPL, with 10 dB
pad (nominal)
NOISE
1
9 dB SPL
DYNAMIC RANGE (typical) 140 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
1
85 dB, 1 kHz at 1 Pa*
PHANTOM POWER 48V DC, 3.0 mA typical
REQUIREMENTS
SWITCHES Flat, roll-off;
10 dB pad (nominal)
WEIGHT (less accessories) 14.5 oz (410 g)
DIMENSIONS 6.69" (170.0 mm) long, 2.10"
(53.4 mm) maximum body
diameter
OUTPUT CONNECTOR Integral 3-pin XLRM-type
ACCESSORIES FURNISHED AT8449/SV shock mount for
5
/
8
"-27 threaded stands;
microphone dust cover;
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.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51459-EN ©2002 Audio-Technica U.S., Inc. Printed in U.S.A.
AT4047/SV
CARDIOID CONDENSER MICROPHONE
SCALE IS 5 DECIBELS PER DIVISION
8 kHz
LEGEND
1 kHz
5 kHz
200 Hz
Polar Pattern
240
210
180
270
300
330
0
150
120
90
60
30
Roll-off
12" or more on axis
LEGEND
50
100
Frequency in Hertz
200
500
1k
2k
5k
10k
Frequency Response
Response in dB
20k
10 dB