Instrukcja obsługi Earthworks M23R

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:

-4º to 140º F (-20º to +60º C)

Storage Temp. Range:

-40º to 176º F (-40 to +80º C)

Humidity:

Up to 90%

Dimensions L x D

6.25 x .860 in.

(165 x 22 mm)

Weight: 0.35lb. (1.60kg)

Specyfikacje produktu

Marka:	Earthworks
Kategoria:	mikrofon
Model:	M23R
Moc:	200 W
Źródło zasilania:	Bateria
Wysokość produktu:	270 mm
Szerokość produktu:	440 mm
Głębokość produktu:	605 mm
Waga produktu:	10500 g
Czas ładowania:	1.1 h
Pojemność baterii:	3 Ah
Model:	Kosiarka robot
Napięcie baterii:	26 V
Liczba kół:	3 szt.
Zalecany obszar koszenia:	600 m²
Szerokość koszenia:	280 mm
Pojemność systemu zbierania trawy:	- l
Minimalna wysokość cięcia:	15 mm
Maksymalna wysokość cięcia:	60 mm