BEYERDYNAMIC MCW-D 523 MCWD523_DB_E.pdf

beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 224
[e-mail] | www.beyerdynamic.de

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / MCW-D 523 (01.09)

MCW-D 523

Wireless, digital Chairman Microphone Unit
with Loudspeaker

Order # 479.756

FEATURES

• Direct Sequence Spread Spectrum (DSSS) provides high immunity
from interference and unauthorised listening

• Wireless transmission with integrated transmitting/receiving
antenna in the 2.4 GHz frequency band which is approved
world-wide

• Digitally encoded audio signals prevent unauthorised listening

• Integrated loudspeaker with voice equalisation

• Gooseneck microphone provides excellent audio quality

• Red illuminated ring around the gooseneck to indicate the
ready-to-talk status of the microphone

• Microphone button to switch the microphone on / off

• Clear button to switch off all activated delegate stations

• Programmable function button for different priorities or
external controls

• Green LED to indicate that the microphone is switched on
and ready for talking

• DC-connection for DC-operation and battery charging

• Charging contacts

• Power on LED

• Mini stereo jack (3.5 mm) as documentation output for the
connection of recorders, PCs with the steno-s recording
software etc.

• High-quality plastic housing with charcoal-grey, non-glare
and scratch-resistant Nextel

®

finish

• The following parameters can be programmed:
loudspeaker level, auto-off behaviour, voice-controlled
activation

• Decreased loudspeaker volume when microphone is switched on
(fixed -15 dB)

• Auto-Off switching when nobody talks into the microphone

• Microphone unit can be programmed by using the configuration
software with the control unit

• APO function for Automatic Power OFF when the control unit
is in the stand-by mode or switched off

• Processor-controlled charging electronics to prevent the
“memory effect” of the battery

• Reliable charging electronics ensures immediate use of the
microphone units

• LED ring of the gooseneck microphone indicates charging status

• Maximum charging time of 2 hours when the battery (NiMH) is
completely empty

• Operating time approx. 20 hours

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MCW-D 523

DESCRIPTION

The MCW-D 523 chairman microphone unit is equipped with a
clear, function and a microphone button in the housing with which
the participant can switch his microphone on and off. The chair­man microphone unit does not depend on the maximum number of
simultaneous open microphones. Unlike the delegate microphone
units the chairman microphone unit is not controlled by ACA
(Automatic Channel Allocation), but has an extra transmitting
channel exclusively for the chairman. The ready-to-talk status of the
microphone is indicated by the green LED in the housing and the red
illuminated ring around the gooseneck microphone.

Using the clear button all switched-on microphones of the delegate
microphone stations are switched off.

With the function button there are various configurations possible:

Priority “Normal”

When the chairman switches his microphone on with the function
button and the priority programming “Normal” the switched on
delegate microphone units are switched off. Afterwards the
delegates can switch on their microphone and take part into the
discussion again, while the chairman’s microphone is still switched
on.

Priority “Mute”

When the chairman switches his microphone on with the function
button and the priority programming “Mute” the switched on
delegate microphone units are muted as long as the chairman is
speaking. If the chairman switches his microphone off, all delegate
microphone units that had been switched on before, are switched
on again.

Priority “Clear”

When the chairman switches his microphone on with the function
button and the priority programming “Clear” the switched on
delegate microphone units are switched off. The delegates can
switch on their microphone again, when the chairman has switched
off his.

COM Message

A command is sent via the RS 232 serial interface from the MCW-D
50 control unit and a programmed function is carried out via a
media control system for instance (e.g. light control). For the other
functions there is also a command sent via the RS 232 serial inter­face from the MCW-D 50 control unit

Custom

Two different commands according to the duration of the push:
< 1 second = command “Short press string” is transmitted
> 1 second = command “Long press string” is transmitted
These commands can be set individually with the “MCW-D 50
Conference” software.

Audio Mute

An audio signal, e.g. from a wireless microphone, can be switched
off. This function can be combined with a “Clear” command to
switch off activated delegate microphones.

Depending on the configuration with the “MCW-D 50 Conference”
software the following operating modes are available:
Voice activation: the microphone is switched on, when someone
speaks into it.
Push-To-Talk: the microphone button is held down, while the par­ticipant is speaking.

The integrated loudspeaker reproduces the audio signal of the
whole conference system. Depending on the audio signal routing in
the control unit the loudspeaker can reproduce other audio signals
such as a wireless microphone in the auditorium.

The parameters of the microphone unit are adjusted via PC by using
the “MCW-D 50 Conference” software. The parameters are
adjusted for all microphone units.

The volume of the loudspeaker is adjusted and can be controlled
with the MCW-D 50 control unit or a media control system. The
ducking level determines the attenuation of the loudspeaker level
when the microphone of the microphone unit is switched on. Each
microphone unit has its own address. An existing system can be
complemented at any time.

The DSSS transmission offers high immunity against unauthorised
listening. In addition to this, the conference system including the
appropriate microphone units can be protected with an 8-digit
alphanumeric code. A microphone unit that does not have the
correct code will be identified by the control unit and switched off
immediately.

The integrated rechargeable battery allows an operation of the
microphone unit of approx. 20 hours depending on the participation
in the discussion. As soon as the remaining battery time is below a
certain threshold of 1 hour, the power on LED on the rear of the
microphone unit will flash or if the system is controlled by PC or a
media control system, the low battery capacity can be also
indicated. The charging time of a completely empty battery is
around 2 hours with the integrated processor-controlled charging
electronics. Depending on the use of the microphone unit the
charging time can be less.
As an option the microphone unit can be powered and charged by
a DC power supply adapter.

The microphone unit is switched on by briefly pressing the micro­phone button once. There are several ways to switch off the
microphone unit:

1. Press the microphone button for 3 seconds.

2. Press the standby button of the MCW-D 50 control unit for

3 seconds to switch off all activated microphone units.

3. Switch off all microphone units via an RS 232 or TCP/IP

command from the PC or media control system.

4. Switch off the control unit; after approx. 3 minutes the micro-

phone unit will be switched off.

beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 224
[e-mail] | www.beyerdynamic.de

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / MCW-D 523 (01.09)

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ARCHITECT’S SPECIFICATIONS

Digital wireless Chairman unit with three buttons to switch the
microphone on/off, clear all activated delegate units and one
special button that can be programmed e.g. as priority button or for
special functions in conjunction with a serial interface / Ethernet
interface at the control unit. Specific DSSS modulation (Direct
Sequence Spread Spectrum) ensures a high safety against noise and
unauthorised listening. World-wide approved in the 2.4 GHz
frequency band. Integrated loudspeaker with voice equalisation for
decentralised sound equalisation. Green LED to indicate the micro­phone has been switched on. Cardioid condenser gooseneck mi­crophone (back electret). Gooseneck length: 400 mm; gooseneck
diameter: 6 mm. Illuminated ring to indicate the ready-to-talk
condition. Using the configuration software with a PC it is possible to
adjust and configure the volume of the loudspeaker and threshold

for voice activation and auto-off-switching. Integrated rechargeable
NiMH battery ensures an operating time of 20 hours. Processor­controlled charging technology for a charging time of 2 hours
without memory effect. The battery is monitored by the control unit
and an LED indicates when the capacity is too low. 2 charging
contacts. Mini jack socket (3.5 mm) as documentation or head­phone output. DC-connection for recharging the battery or powering
the microphone unit with an external power supply unit. High-quality
plastic housing with charcoal-grey Nextel

®

finish. Integrated antenna.

Dimensions (Width x Height x Depth) 156.5 x 52 x 191 mm. Weight:

1.7 kg.

Manufacturer: beyerdynamic
Type: MCW-D 523

TECHNICAL SPECIFICATIONS

General

Frequency range . . . . . . . . . . . . . . . . . . . 2400 - 2483.5 MHz

(ISM-band)

Modulation. . . . . . . . . . . . . . . . . . . . . . . Direct Sequence Spread

Spectrum DSSS, digital

signal processing acc.

to own standard

Max. number of audio streams . . . . . . . . 9 useable channels per

system

Signal-to-noise ratio . . . . . . . . . . . . . . . . 80 dB typ., (unweighted

signal-to-noise ratio)
Range between microphone units

and control unit . . . . . . . . . . . . . . . . . . . > 100 m

Power supply . . . . . . . . . . . . . . . . . . . . . 110 - 240 V AC 50/60 Hz

Approval. . . . . . . . . . . . . . . . . . . . . . . . . world-wide

Microphone Units

Transmitter power. . . . . . . . . . . . . . . . . . max. 15 dBm per

channel (average,

duty cycle ≤ 30%)*

Battery voltage . . . . . . . . . . . . . . . . . . . . 8 NiMH cells, 1600 mAh

External DC operation. . . . . . . . . . . . . . . 18 V DC (±0.5 V),

residual hum < 20 mV,

400 mA

Loudspeaker . . . . . . . . . . . . . . . . . . . . . . Wide-band, integrated

loudspeaker
Volume decrease when

Mic On (“Ducking”) . . . . . . . . . . . . . . . . 15 dB fixed setting

AF output . . . . . . . . . . . . . . . . . . . . . . . . Documentation output,

unbalanced jack socket

(3.5 mm, stereo)

Connection. . . . . . . . . . . . . . . . . . . . . . . Tip = AF+

Ring = AF ­Shield = ground

Output level . . . . . . . . . . . . . . . . . . . . . . max. 2.4 V rms on open

circuit, T.H.D. < 1%

2.3 V rms at 80 Ω load,

T.H.D. < 1%

Min. impedance . . . . . . . . . . . . . . . . . . . 600 Ω

Integrated limiter against clipping . . . . . . cannot be switched off

Limiter activity at . . . . . . . . . . . . . . . . . . 126 dB SPL

Power supply . . . . . . . . . . . . . . . . . . . . . 9.6 V with integrated

NiMH battery (8 cells)
Operating time depending on

the type of the microphone unit . . . . . . . approx. 20 hours in

discussion mode;

operating time depends

on the volume
Temperature range

at < 90% humidity . . . . . . . . . . . . . . . . . +10° - +40°C

Storage temperature

at < 90% humidity . . . . . . . . . . . . . . . . . -20° - +55°C

Dimensions (without microphone)

Length . . . . . . . . . . . . . . . . . . . . . . . . . . 191 mm

Width . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.5 mm

Height . . . . . . . . . . . . . . . . . . . . . . . . . . 52 mm

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7 kg

*The transmitter power can differ from this value due to specific
regulations in various countries.

MCW-D 523

beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 224
[e-mail] | www.beyerdynamic.de

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / MCW-D 523 (01.09)

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MCW-D 523

beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 224
[e-mail] | www.beyerdynamic.de

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / MCW-D 523 (01.09)

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OPTIONAL ACCESSORIES

CA 2475 Microphone stand, 3/8",

adjustable height 870 - 1575 mm,
with heavy base plate and plate where
to place MCW-D or MCS

microphone units, basalt grey . . . . Order # 472.212

CA 2457 Charger/DC power supply unit

for MCW-D 5** microphone

units . . . . . . . . . . . . . . . . . . . . . . . Order # 479.721

WIRING DIAGRAM

SHM 214 C 03 MICROPHONE

REAR VIEW CASING

Charging contacts

DC connection

Operating
control LED

Mini stereo jack for the
connection of recorders or
headphones

MCW-D 523

beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 224
[e-mail] | www.beyerdynamic.de

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / MCW-D 523 (01.09)

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DIMENSIONS CASING

Top view

Lateral view

MCW-D 523

beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 224
[e-mail] | www.beyerdynamic.de

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / MCW-D 523 (01.09)

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EXPLODED VIEW