Audio Technica AT4050, AT4050/CM5 Specifications
AT4050/CM5
MULTI-PATTERN
CAPACITOR MICROPHONE
Description
The AT4050/CM5 is a transformerless, multiple-pattern studio
microphone designed for use in the most demanding applications.
The capacitor element utilizes dual, gold-plated and aged, large
diaphragms for extended frequency response. The microphone
polar pattern can be switched for cardioid, omnidirectional or figureof-eight operation. This, coupled with low-noise transformerless
electronics, makes this microphone ideal for the most critical digital
recordings. The dynamic range of the AT4050/CM5 is 132 dB without
the built-in attenuator and it accepts up to 149 dB SPL without
capsule or electronic-system distortion above 1% T.H.D.
The AT4050/CM5 is the culmination of extensive field e valuations
in studio environments with resultant significant advances in microphone performance factors. The AT4050/ CM 5’s low-noise circuitry is
symmetrical and transformerless, resulting in exceptional transient
response and clean output signals, even under high-output conditions. The microphone is totally free of the distortion associated with
conventional transformer-coupled outputs. Its fast response to transients contributes to the open, transparent reproduction of even the
most troublesome of instruments and sound effects. To ensure optimum performance, floating-construction mounting of the element
provides isolation from noise and vibration.
The AT4050/CM5 combines the benefits of exceptionally low
self-noise with very high output. Equally important, it handles very
high sound pressure levels with ease. The AT 4050/CM5 may be used
with confidence in a wide variety of miking applications, even under
the stringent demands of modern digital recording systems.
A switchable 10 dB (nominal) pad is built-in, increasing the SPL
capabilities to 159 dB.
An integral 80 Hz 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 “popping” in close v ocal use,
and handling noise. It reduces the pickup of low-frequency ambient
noise (i.e. traffic , air-handling systems, etc.) and room rev erber ation.
The AT4050/CM5 incorporates a dual- diaphragm configuration
that allows undistorted reproduction of high sound pressure level
signals at all frequencies. The 2-micron-thick vapor-deposited gold
diaphragms provide accurate reproduction of e ven the most subtle
sounds, especially high-frequency signals not easily reproduced
by conventional large-diaphragm condenser transducers. For a
warm, true-to-life quality, the dual, large-diaphragm design provides
remarkable low-frequency performance in all the polar pattern
settings.
Every AT4050/CM5 diaphragm is aged through five different steps
to assure the optimum characteristics achieved will remain constant
over years of use. The symmetrical
housing assembly surrounding the
microphone capsule and its open
acoustical environment allow the
off-axis response to be ideally suited
for studio work where natural reproduction of off-axis sound is of paramount
importance.
The AT4050/CM5 will operate in
conjunction with any remote “phantom”
or “simplex” power source supplying
48 volts DC, such as the A C-powered
Audio-Technica AT8801 singlechannel and CP8506 four-channel
phantom power supplies.
The AT4050/CM5 includes an
AT8441 shock mount. This effective
shock mount fits 5/8"-27 threaded
stands. A stand clamp without
shock mount, the AT8430, is available as an optional accessory.
AT4050 /CM5 with included
AT8441 shock mount
Architects and Engineers Specifications
The microphone shall be a multiple-pattern capacitor with a
frequency response of 20 Hz to 20,000 Hz. Polar pattern shall be
switchable to cardioid, omnidirectional or figure-of-eight. It shall
operate from an external 48V DC (±4V) phantom power source. The
dual-diaphragm element shall be internally shock mounted.
Nominal open-circuit output voltage shall be 15.8 mV at 1 kHz,
1 Pascal. The microphone shall have an output impedance of 100
ohms and output shall be transformerless balanced. The microphone shall accept a 149 dB SPL at 1 kHz while producing no greater
than 1% T.H.D.
The microphone shall have a length of 7.40" (188.0 mm),
a maximum body diameter of 2.10" (53.4 mm), and a weight of
16.9 oz (480 grams). Finish shall be matte black. A separate shock
mount shall be included.
The Audio-Technica AT4050/CM5 is specified.
40 SERIES PRECISION MICROPHONES
AT4050/CM5
188.0 mm
7.40"
53.4 mm
2.10"
19.0 mm
0.75"
21.0 mm
0.83"
AT4050/CM5
Specifications
ELEMENT Externally polarized (DC bias) capacitor
POLAR PATTERNS Cardioid (Unidirectional), Omnidirectional,
FREQUENCY RESPONSE 20-20,000 Hz
OPEN CIRCUIT SENSITIVITY (1 kHz) –36 dB (15.8 mV) ± 2 dB, re 1V at 1 Pa*
IMPEDANCE 100 ohms
MAXIMUM INPUT SOUND LEVEL 149 dB SPL, 1 kHz at 1% T.H.D.
NOISE, TYPICAL (A-WEIGHTED)
DYNAMIC RANGE, TYPICAL 132 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO, TYPICAL 77 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) 16.9 oz (480 grams)
DIMENSIONS 7.40" (188.0 mm) long,
ACCESSORIES FURNISHED AT8441 shock mount for 5/8"-27 threaded
0
330
300
270
240
210
180
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
†
Cardioid
30
60
120
150
Figure-of-eight
159 dB SPL, with 10 dB pad (nominal)
2
17 dB SPL
2.10" (53.4 mm) maximum body diameter
stands; 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
2
Using Audio Precision System One
90
50
LEGEND
500
200100
Frequency in Hertz
12" or more on axis (flat)
Hi-pass
2k
1k
10k
5k
10 dB
20k
1
Response in dB
Optional Accessories:
• AT8 137 large cylindrical foam windscreen.
• AT8 314 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.
• AT8430 stand clamp for 5/8"-27
threaded stands.
• CP8506 four-channel 48V phantom
power supply (AC powered).
• AT8801 single-channel 48V phantom
power supply (AC powered).
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.
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,
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.
One-Year Limited Warranty
Prior approval from A.T.U.S. is required for return.
contact
Dimensions
Omnidirectional
0
30
150
180
Figure-of-eight
0
30
150
180
60
90
120
60
90
120
50
LEGEND
50
LEGEND
330
300
270
240
210
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
SAME AS 1 kHz
1 kHz
5 kHz
330
300
270
LEGEND
200 Hz
240
210
SCALE IS 5 DECIBELS PER DIVISION
SAME AS 1 kHz
1 kHz
5 kHz
SAME AS 5 kHz
8 kHz
Audio -Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio -Technica Limited, Old Lane, Leeds LS11 8AG England
Form No. 0345- 0808- 04-B/ W P51124 1999 Audio -Technica U.S., Inc. Printed in U.S.A.
100 200
12" or more on axis (flat)
Hi-pass
100 200
12" or more on axis (flat)
Hi-pass
500
1k
Frequency in Hertz
500
1k
Frequency in Hertz
10 dB
Response in dB
2k
2k
10k
5k
5k
20k
10 dB
Response in dB
10k
20k
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