Earthworks M23R Bedienungsanleitung

Earthworks Mikrofon M23R

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Earthworks, Inc.
37 Wilton Rd.
Milford, NH 03055 USA
Phone: 1-603-654-2433, ext. 114
Fax: 1-603-654-6107
earthworksaudio.com
Printed in U.S.A.
M23R
Technical Support
Should you have any questions regarding your
M23R microphone please contact us:
email: support@earthworksaudio.com
Phone: (603) 654-2433, ext. 119
(9am – 5pm ET)
Electronic Calibration Files
Electronic Calibration Files (ECFs) in most
cases will not be required for Reference
Series Microphones as each M23R is
already at (
±
0.5dB from 3Hz to 23kHz)
.
However, ECFs are available for all models
of Earthworks measurement microphones
to calibrate a specic microphone to your
measurement software or system. To obtain
your ECF, rst register your microphone
online at earthworksaudio.com/register
and then visit earthworksaudio.com/ecf to
request your ECF, which will be sent to you as
an email attachment. If you have any other
questions, please call 603-654-2433, ext.
114 or email: sales@earthworksaudio.com
WARRANTY Earthworks products carry a limited warranty.
Visit earthworksaudio.com/warranty for more information.
phantom power using a standard XLR micro-
phone cable. Please allow up to one minute for
the microphone to settle. Plugging in the micro-
phone “hot” (phantom power already present at
the input) will not damage the microphone. For
optimum results we recommend pointing M23R
toward the sound source.
This microphone has no removable parts.
Calibration
The microphone’s sensitivity at 1kHz is mea-
sured at the factory. The sensitivity in mV/Pa is
provided on the included calibration chart. If on-
site calibration is required, use the included one-
half inch standard calibrator adapter.
Compliant
Specications are subject to change without notice.
Description
Earthworks M23R is an omnidirectional (pres-
sure) microphone designed for measurement
purposes. It utilizes a pre-polarized condenser
capsule directly coupled to a wideband, low out-
put impedance preamplier. The M23R requires
24-48V phantom power at 10mA. It features a
linear frequency response from 3Hz to 23kHz,
very low handling noise, uniform polar pattern,
and high SPL handling capabilities. Its unique
circuitry excludes the transconductance of the
input FET from the overall gain structure. This
means the sensitivity remains very stable when
the microphone is subjected to variations in am-
bient temperature. The M23R meets or exceeds
ANSI Type 1 requirements.
Each Reference Series measurement micro-
phone is manufactured to within
±
0.5dB of each
other in frequency response and sensitivity. This
ensures that any microphone in the series will
be matched to all others now and forever while
also eliminating the necessity of ECFs (Electronic
Calibration Files) in most cases.
The M23R is
de-
livered with its own calibration chart providing
its individually measured open-circuit sensitiv-
ity and the frequency response curve. Should
it be needed, an ECF containing the frequency
response data for importing directly into mea-
surement software is available from Earthworks
upon request. A mounting clip and calibrator
adapter are included with the microphone.
Applications
Earthworks M23R is ideally suited for acoustical
measurements, sound system setup and trou-
bleshooting, room acoustics, or any application
where an accurate measurement microphone
is required. The wide linear minimum-phase re-
sponse and fast clean impulse response (Fig. 2)
make the M23R especially suited for time do-
main measurements.
The M23R is simple to operate. Connect the
microphone to a preamplier supplying 24-48V
Fig 1. XLR Output Connector Assignment
Fig 3. Polar Response (Typical)
Fig 2. Impulse Response (Typical)
Specications
Frequency response: 3Hz to 23kHz
± 0.5dB
Polar Pattern: Omnidirectional
Sensitivity:
36mV/Pa (-28.9 dBv/Pa)
Matching Tolerance:
± 0.5dB
(freq resp & sensitivity)
Power Requirements: 24-48V Phantom, 10mA
Peak Acoustic Input: 140dB SPL
Output: XLR-3 (pin 2+)
Minimum Load: 600Ω btw. pins 2 & 3
Noise: 20dB, A equivalent
Temperature
Operating Range:
-4Âș to 140Âș F (-20Âș to +60Âș C)
Storage Temp. Range:
-40Âș to 176Âș F (-40 to +80Âș C)
Humidity:
Up to 90%
Dimensions L x D
6.25 x .860 in.
(165 x 22 mm)
Weight: 0.35lb. (1.60kg)

Produktspezifikationen

Marke: Earthworks
Kategorie: Mikrofon
Modell: M23R

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