Audio Technica AT4050 Specifications

4050
A T
MULTI-PATTERN
CAPACITOR MICROPHONE
Description
The 4050/ 5 is a transformerless, multiple-pattern studio
AT CM
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 figure-
of-eight operation. This, coupled with low-noise transformerless
electronics, makes this microphone ideal for the most critical digital
recordings. The dynamic range of the
the built-in attenuator and it accepts up to 149 dB SPL without
capsule or electronic-system distortion above 1% T.H.D.
The AT 4050/ CM 5 is the culmination of extensive field evaluations
in studio environments with resultant significant advances in micro-
phone performance factors. The
symmetrical and transformerless, resulting in exceptional transient
response and clean output signals, even under high-output condi-
tions. The microphone is totally free of the distortion associated with
conventional transformer-coupled outputs. Its fast response to tran-
sients contributes to the open, transparent reproduction of even the
most troublesome of instruments and sound effects. To ensure opti-
mum performance, floating-construction mounting of the element
provides isolation from noise and vibration.
The 4050/ 5 combines the benefits of exceptionally low
AT CM
self-noise with very high output. Equally important,
high sound pressure levels with ease. The
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.
40 SERIES PRECISION MICROPHONES
/
5
CM
is 132 dB without
AT4050/CM5
4050/ 5's low-noise circuitry is
AT CM
handles very
it
4050/ 5 may be used
AT CM
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 vocal use,
and handling noise. It reduces the pickup of low-frequency ambient
noise (i.e. traffic, air-handling systems, etc.) and room reverberation.
The 4050/ 5 incorporates a dual-diaphragm configuration
AT CM
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 even 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 AT 4050/ CM 5 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 reproduc-
tion 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 AC-powered
Au d i o - Te c h n i c a AT8801 single-
channel and CP8506 four-channel
phantom power supplies.
The AT4050/CM5 includes an
AT8441 shock mount. This effective
5
shock mount fits / "-27 threaded
8
stands. A stand clamp without
shock mount, the AT8430, is avail-
able as an optional accessory.
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 micro-
phone 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 4050/
AT
AT4050/CM5 with included
AT8441 shock mount
5 is specified.
CM