Audio Technica AT4041 User manual

CARDIOID
CAPACITOR MICROPHONE
AT4041
Description
The AT4041 is a pressure-gradient capacitor microphone with a
uniform cardioid polar pattern. The frequency response is smooth
over the AT4041’s extended 20-20,000 Hz range, with a slight
rise occurring in the high-frequency region. It is recommended for
professional recording and critical applications in broadcast.
The AT4041 features a transformerless output for low self-noise,
high output and a very high SPL (sound pressure level) handling
capability.The balanced output is direct-coupled, resulting in a clean
signal even under high-output conditions. The microphone is totally
free of the distortion associated with conventional transformer-coupled
outputs.The microphone will accept as high as a 145 dB SPL before
producing 1%T.H.D. Sounds which approach this intensity may require
the use of an attenuator between the microphone and electronics to
avoid overloading the input stage due to excess signal strength.
The back plate of the AT4041 element holds a fixed charge
and has been aged to provide energy stabilization. The surface
of the back plate has been precision-milled to ensure maximum
charge linearity.The result is a reduction in both frequency response
peaks and diaphragm break-up distortion.
The Audio-Technica fixed-charge capacitor element design
allows significant diaphragm weight reduction relative to earlier
charged-diaphragm electret designs. The low-mass diaphragm
improves transient response, increases response bandwidth and
reduces handling and mechanical noise transfer.
An integral hi-pass filter provides easy switching from a flat
frequency response to a low-end roll-off. The hi-pass switch is
recessed to prevent accidental activation. The hi-pass position
reduces the microphone’s sensitivity to wind noise, “popping” in
close vocal use, and handling noise. It reduces the pickup of low-
frequency ambient noise (such as air-handling systems, traffic, etc.)
and room reverberation.The hi-pass filter may also be used to com-
pensate for proximity effect in close-miking situations. Use of the
supplied foam windscreen will also help reduce wind and “popping”
noise. For the ultimate in wind and “popping” protection, use an
AT8106 pop filter in combination with an AT8114 windscreen.
A rugged microphone, the AT4041 is housed in a case constructed
of turned brass, not thin-wall aluminum.The surface is painted black
for low reflectivity.
Operation and Maintenance
The AT4041 will operate in conjunction with any remote “phantom”
or “simplex” power source supplying 48 volts DC.
While a modern fixed-charge capacitor microphone is not unduly
sensitive to the environment, temperature extremes can be harmful.
Exposure to high temperatures can result in gradual and permanent
reduction of the output level. Avoid leaving the microphone in the
open sun or in areas where temperatures exceed 110°F (43°C)
for appreciable periods of time. Extremely high humidity should
also be avoided.
Architects and Engineers Specifications
The microphone shall be a fixed-charge capacitor with a cardioid
polar pattern and a frequency response of 20 Hz to 20,000 Hz. It
shall operate from an external 48V DC phantom power source.
Nominal open-circuit output voltage shall be 15.8 mV at 1 kHz,
1 Pascal. The microphone shall have an output impedance of
100ohmsandoutput shallbebalanced.Themicrophone shallaccepta
145 dB SPL at 1 kHz while producing no greater than 1% T.H.D.
The case shall be turned brass and have a diameter of
0.83" (21.0 mm), a length of 6.28" (159.5 mm), and a weight of
4.2 oz (120 g). Finish shall be black paint.
The Audio-Technica AT4041 is specified.
40 SERIES PRECISION MICROPHONES

AT4041
Specifications
†
ELEMENT Fixed-charge, permanently polarized capacitor
POLAR PATTERN Cardioid (Unidirectional)
FREQUENCY RESPONSE 20-20,000 Hz
OPEN CIRCUIT SENSITIVITY (1 kHz) –36 dB (15.8 mV) ±2 dB, re 1V at 1 Pa*1
IMPEDANCE 100 ohms
MAXIMUM INPUT SOUND LEVEL 145 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE, TYPICAL 121 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO, TYPICAL 70 dB, 1 kHz at 1 Pa*
HI-PASS FILTER (LOW-END ROLL-OFF) 80 Hz, 12 dB/octave
POWER REQUIREMENTS 48V DC phantom (±4V)
CURRENT CONSUMPTION, TYPICAL 3.2 mA
WEIGHT (LESS CABLE AND CLAMP) 4.2 oz (120 g)
DIMENSIONS 6.28" (159.5 mm) long,
0.83" (21.0 mm) maximum body diameter
ACCESSORIES FURNISHED AT8405 snap-in clamp for standard 5/8"-27
threaded stands; foam windscreen;
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/cm2= 10 microbars = 94 dB SPL
1 Measured at diaphragm
Optional Accessories:
•AT8106 metal-frame pop filter.
•AT8114 foam windscreen for AT8106
pop filter.
•AT8314 2-conductor, shielded, vinyl-
jacketed, broadcast-type cable with
XLRF-type connector at microphone
end, XLRM-type connector at equipment
end. Available in 10', 20', 25', 30', 50'
& 100' lengths.
•AT8407 universal “clothes-pin” stand
clamp fits both tapered and cylindrical
microphones.
•AT8410a shock mount for boom or stand
operation. Universal “clothes-pin” clamp
fits tapered and cylindrical microphones.
•AT8415 shock mount for boom or stand
operation.
•CP8506 four-channel 48V phantom power
supply (AC powered).
• AT8801 single-channel 48V phantom
power supply (AC powered).
Frequency Response
Outside the U.S.A., please contact your local dealer for
warranty details.
One-Year Limited Warranty
Audio-Technica microphones and accessories 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 un-
authorized 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.
Polar Pattern
6.28"
159.5 mm
0.83"
21.0 mm
0.75"
19.0 mm
Dimensions
LEGEND
Roll-off
12" or more on axis (flat)
Frequency in Hertz
Response in dB
10 dB
20k
10k
5k
2k
1k
500
200100
50
200 Hz
1 kHz
5 kHz
8 kHz
LEGEND
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
Form No. 0345-0813-01-B/W 1998 Audio-Technica U.S., Inc. Printed in U.S.A.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England