Beyerdynamic MTS 67 User Manual

BEDIENUNGS­ANLEITUNG

OPERATING
INSTRUCTIONS

NOTICE
D’UTILISATION

MTS 67

Tischsprechstelle
Desktop Microphone Unit
Poste d’appel

8

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-

english

9

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.