MCS 20 – Power Supply Unit 28
Thank you for selecting the wired MCS 20 conference system from beyerdynamic. Please take some time to read
through this manual carefully before using this product.
One system includes the following components:
• MCS 20 power supply unit
• MCS 221 delegate microphone unit
• MCS 223 chairman microphone unit
1. Introduction
The MCS 20 system from beyerdynamic is a reliable conference system which provides versatility, easy handling and
quality. The system is controlled by a micro processor which is integrated in the MCS 223 chairman microphone unit.
All functions feature a solid-state control which is electronically precise. Each microphone unit provides a microphone
and loudspeaker as well as a connection for a headphone. An additional loudspeaker system can be connectedto the
MCS 20 power supply unit, but not necessarily. The decentral sound system avoids runtime effects and echoes to
ensure a perfect communication at each seat. The gooseneck microphones and loudspeakers contribute to an
excellent and natural audio quality. The handling is very easy and the chairman controls the meeting with his/her
microphone unit.
The standard cable configuration is a daisy chain connection of all devices in the system. The single cable system
allows any other configuration.
T-adapters are available for branches. Please note, the maximum number of microphone units that can be turned on
is limited for one power supply unit. More microphone units, however, can be turned on, when the power supply
unit is cascaded.
2. MCS 20 power supply unit2.1 Safety information
1. Read these instructions.
2. Keep these instructions.
3. Heed all war nings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers)
that produce heat.
9. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.
10. Only use attachments/accessories specified by the manufacturer.
11. Unplug this apparatus during lightning storms or when unusued for long periods of time.
12. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in
any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not operate normally or has been droped.
Exemption from liability
• beyerdynamic GmbH & Co. KG will not be liable if any damage, injury or accident occurs due to negligent,
incorrect or inappropriate operation of the product.