Beyerdynamic MTS 67 User Manual

BEDIENUNGS­ANLEITUNG

OPERATING
INSTRUCTIONS

NOTICE
D’UTILISATION

MTS 67

Tischsprechstelle
Desktop Microphone Unit
Poste d’appel

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OPERATING INSTRUCTIONS MTS 67

Thank you for selecting the MTS 67 desktop microphone

unit. Please take some time to read carefully through this operating
instructions before setting up the equipment.

Description

The MTS 67 is an “intelligent” desktop microphone unit

controlled by a microcontroller. Depending on the application,
you can choose between the operating modes ON/OFF, Push-To­Talk (PTT) or Push-To-Mute (PTM). Furthermore, the frequency
response can be tailored in three modes to suppress noise: linear,
90 Hz bass roll off or 150 Hz bass roll off.
The MTS 67 is switched on and off with the microphone button.
An LED indicator in the casing and an illuminated ring of the
gooseneck microphone show the ready-to-talk status.

The MTS 67 is available in two versions.

• The MTS 67/3 is equipped with a 3-pin male XLR connector.

• The MTS 67/5 has a 5-pin male XLR connector. This
microphone unit can be operated via an external control
contact (operator). The integrated microphone button can
be either switched on simultaneously or put out of operation.
Using the microphone button an external device (e.g. mixing
amplifier for announcements) can be triggered by an open
collector control output.

Applications

The MTS 67 is ideal for discussions, tele/video conferencing

and announcements.

Connection

MTS 67/3

The MTS 67/3 microphone unit is equipped with an

integrated amplifier with electronically balanced output. The
unit is powered with phantom power (24 to 48 volts). The
MTS 67/3 can be connected to mixing console supplying this
phantom power for instance.
This is the connection of the 3-pin XLR-plug:
Pin 1: Ground
Pin 2: Audio+
Pin 3: Audio-

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MTS 67/5

The MTS 67/5 microphone unit is also powered with

phantom power (24 to 48 volts). Depending on the application
this microphone unit can be connected to a control desk if the
microphone unit is operated by an external control contact or
to a mixing amplifier if external devices are controlled.
This is the connection of the 5-pin XLR-plug:
Pin 1: Ground
Pin 2: Audio+
Pin 3: Audio­Pin 4: Control output Open Collector 50 mA / 55 V
Pin 5: Control input floating connection to chassis

Operation

Adjustment operation mode

The desired operation mode is set at the bottom of the

microphone unit.

• ON/OFF

The microphone is switched on or off by
pressing the microphone button.

• PTT

The microphone is switched on as long as
the button is pressed.

• PTM

The microphone is switched off as long as the button is pressed
(cough button).

Adjustment Frequency Response

The frequency response mode can be adjusted at the

bottom of the microphone unit.

• LIN

Linear frequency response for highest
fidelity of reproduction. This is the factory
adjustment. The linear position is
recommended for high voices.

• 90 or 150

Two-stage roll-off filter to reduce low-frequency noise and to
compensate the close-talking effect. The 90 or 150 position is
recommended for deep voices.

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Additional Functions of the MTS 67/5

Control output - Control of external devices

Pin 4 is an open collector control output to control exter-

nal devices. When the microphone is activated the output is
low-impedance to chassis (Pin 1). The maximum current is
12 mA, the maximum voltage is 55 V, total power dissipation
150 mW. If you want to connect higher loads, this output can
also be used for the control of an additional switch.

Example:

If you connect the MTS 67/5 to the E 3300 mixing amplifier, the
current programme (e.g. music) can be faded out and the
microphone switched on for an announcement by pressing the
microphone button.

Control input - Control by external devices

The microphone unit can be controlled by an external

control contact connected to pin 5 (floating connection to chas­sis, pin 1). The operation can be remotely controlled by an oper­ator. Using the DIP switch located on the underside allows you
to select between remote control operation (switch to “Remote
control only”) or microphone button and remote control equal­ly (switch to “Remote and internal control”).

Example:

If you connect the MTS 67/5 to an operating console, video
conference or media control system the microphone unit can
be switched on and off centrally at the operation console, by
the conference participant or by the media control system.

Important!

To connect the MTS 67/5 us a cable with the following structure:
2 wires shielded (AF), 2 control lines and overall shield.

Versions

MTS 67/3 with 3-pin male XLR connector . . Order # 453.862
MTS 67/5 with 5-pin male XLR connector . . Order # 454.168

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Technical Specifications

Transducer type . . . . . . . . . . . Condenser (back electret)

Frequency response (linear) . . 60 - 19,000 Hz

Polar pattern . . . . . . . . . . . . . Cardioid

Open circuit voltage

at 1 kHz . . . . . . . . . . . . . . . . . 16 mV/Pa

Nominal impedance . . . . . . . . 180 Ω

Load impedance. . . . . . . . . . . > 1 kΩ

Max. SPL

at f = 1 kHz, k < 1%. . . . . . . . 122 dB

Signal-to-noise ratio

rel. to 1 Pa . . . . . . . . . . . . . . . 60 dB

A-weighted equivalent SPL . . approx. 26 dB
Level attenuation Off / Mute

(f = 1 kHz) . . . . . . . . . . . . . . . > 65 dB

Supply voltage . . . . . . . . . . . . 24 - 52 V, phantom

Power consumption . . . . . . . . 8.5 mA

Connection MTS 67/3 . . . . . . . 3-pin male XLR

Pin 1 = Shield
Pin 2 = Audio+
Pin 3 = Audio-

Connection MTS 67/5 . . . . . . . 5-pin male XLR

Pin 1 = Shield
Pin 2 = Audio+
Pin 3 = Audio­Pin 4 = Control output
Open Collector 50 mA / 55 V
Pin 5 = Control input

floating connection to chassis

Gooseneck length . . . . . . . . . 400 mm

Dimensions (without microphone)

L x W x H . . . . . . . . . . . . . . . . 190 x 104 x 52 mm

Weight . . . . . . . . . . . . . . . . . . 770 g

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Frequenzgang /
Frequency Response Curve /
Courbe de fréquence

Schaltbilder /
Wiring Diagrams /
Diagrammes de câblage

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Richtdiagramm /
Polar Pattern /
Directivité

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NOTIZEN • NOTES

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DEF 3/BA MTS 67 (12.02)/549.533/Hoh. · Änderungen und Irrtümer vorbehalten · Subject to change without notice · Sous réserve de modifications · Printed in Germany

Germany

Theresienstr. 8

74072 Heilbronn

Tel. [phone] / 617-0

Fax [phone] / 617-224

E-Mail:

[e-mail]

www.beyerdynamic.de

United States

56 Central Ave.

Farmingdale, NY 11735

Tel. [phone]

Fax [phone]

E-Mail: [e-mail]

www.beyerdynamic.com

Great Britain

17 Albert Drive

Burgess Hill RH15 9TN

Tel. [phone] / 258258

Fax [phone] / 258444

E-Mail: [e-mail]

www.beyerdynamic.co.uk