Beyerdynamic M 81 LM Datenblatt

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M 81 lM Militll

E N GIN E E R I N G DATA M 818 (stereo recording)

Unidirectional
Dynamic Microphone

. Cardioid pick-up pattern

. For use with any type of
tape or cassette recorders,
suits all impedances

. Attractive metal case

. Complete with table stand
and clamp

. Superior recording with
a matched pair of M 81
= M 818

DESCRIPTION AND APPLICATIONS

The BEVERDVNAMIC M 81 cardiold moving coil microphone combines elegant styling with BEYERDYNAMIC's mar
year's experience in the construction of professronal studio microphones

The M 81 has a good frequency response that is designed to match the requirements of most home tape or casseti
recorders It has an attractively designed solid metal case. with a special transducer mounting to reduce handling nois
when used in 'reporter type situations.

it is especially suited as a replacement for the low cost. inferior quality microphone that is commonly supplied with tl
home type recorder.

The moving coil microphone is by far the most popular type in both professional recording and broadcast studic
throughout the world. The M 81 Is an excellent example of this type of transducer,

The M 81 is supplied complete with table stand, clamp and with a fixed cable.
The M 81 is also available as a matched pair for stereo recording (M 818). The M 818 comes complete with two M E
microphones. adapter (stereo) cable. clamps. mounting bar and presentation case.

EUGEN EEYER

ELEKTROTECHEHSHEFAERlK DNHEHERUNH THERESIENSTR,B POVBOXUYU lEL,07l3182348 TELEX 0728771

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.Pelar Pattern: T
l

Frequency Ito-penis Curve (:i: 3 db):

'his polar pattern and frequency response curve correspond to typical machine run specifications from a standard M 81.

SPECIFICATIONS

Operating Principle:
Frequency Response:
Polar Pattern:
Attenuation at 180°:
Output Level at 1 kHz:
Open Circuit Voltage
(0 dbm e 1 mW/Pa)
EIA Sensitivity Rating
Electrical impedance:
Load lmpedance:
Diaphragm:
Case:
Case Finish:

Net Weight (with cable):

Connector - M 81 LM:

- M 81 (K):

Pressure Gradient
50 - 16.000 Hz.
Cardioid

> 18 db

2.3 mV/Pa

9 -55.8 dbm
-150.6 dbm
500 ohms

> 2000 ohms
Hostaphan

Zinc dis-casting

Head varnished.
Housing matt chromed

11.30 ounces (320 grams)

non-detachable, 66 (2 in).

highly flexible. twin scree-
ned. terminating In:

3-pin plug MAS 30 or
equivalent

Standard phone jack

FURNISHED ACCESSORIES

M 81; microphone clamp MKV 30. tripod table atanc
ST 300
M 818: 2 clamps and 2 table stands as above. 1 store:

rail ZMS i. 1 stereo adapter cable B 7.1-52-00

OPTIONAL ACCESSORIES
Windscreen

WS 81. available at your choice In red
blue. green. yellow or gray colour.

Clamp Quick release clamp MKV 7

Plug-in transformer TFI/BV 741 020662 L-H
for high impedance (for DIN connections)
inputs

M 81 can also be mounted on gooseneok and floor stands
a. g, for stereo recordings with M 818. For details pleast
inquire.

WIRING DIAGRAM

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Positive pressure produces positive voltage at pin 1 (1)

DIMENSIONS
in main
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ARCHITECTS' AND ENGINEEHS' SPECIFICATIONS

The microphone shall be a moving coil (dynamic) type microphone with a frequency range of 50- 16.000 Hz. The unit shall have
a cardioid polar characteristic. Attenuation at 180° shall exceed 18 db. The microphone output shall be -55.8 dbm when 0 dbm e
1 mW/Pa respectively 2.3 mV/Pe. ElA sensitivity rating at Low Hz. shall be -150,6 dbm. Electrical impedance shall be 500 ohms.
The case shall be made of zinc die-casting. Case finish shall be matt dimmed for the housing, the head shall be varnished. The
dimensions shall be: 5.47 (139 mm) in length. shaft I] 0.86" x 0.86" (22 mm). head El 1.3 x 1.3 (33 mm).

The microphone shall be equipped with a non-detachable cable, 6'6" (2 m), highly flexible, twin~screened. terminating in a 3-pin
plug MAS 30 or equivalent (M 81 LM) or in a standard phone jack (M 81 (K)).

The BEYERDYNAMIC model M 81 is specified.

distributed by:

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_ELEI(TROTECHNISCHE FABRIK