Beyerdynamic MCS 20 User Manual

MCS 20 – Power Supply Unit

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 Power on LED
 Audio input, 3-pin XLR, balanced, ungrounded, adjustable via “Input Level” potentiometer 
 Audio output, 3-pin XLR, balanced, ungrounded
 Line output, e.g. for recorders
 Input level control
 Connection for more power supply units / system extension
 Connection for microphone units
 On/Off switch
 Power connection with fuse holder

















Power connection
• Check whether the connection figures comply with the existing mains supply. Serious damage could occur due to

connecting the system to the wrong power supply. 

• Make sure the power cable cannot be damaged or severed by sharp objects.  
• Connect the MCS 20 power supply unit to the mains. Make sure the mains cable is firmly connected to the 

MCS 20 power connection 

. The fuse holder contains a 3.15 AT fuse.

Renk sockets 
• The MCS 20 power supply unit provides Renk sockets to connect further MCS 20 power supply units 

 and 

microphone units 

. Further microphone units can be connected to the individual power supply units. Refer also

to chapter 4. “Examples of a system configuration”. 
Note: Please make sure that the microphone units are connected to the appropriate connection 

 only.

• Also please ensure that pin no. 8 of the Renk sockets is always grounded while in use, so that pin no. 3 of the

Renk socket has +24 V with reference to ground and pin no. 7 of the Renk socket has -24 V with reference to
ground.

Audio connections
• Audio input 

, 3-pin XLR socket, input, balanced, ungrounded; can be adjusted with the “Input Level” potentiometer.

The input signal is routed to the loudspeakers of the microphone unit and released via the audio output. 
Connection:
1 = System ground (No connection to the protective earthing conductor to avoid hum!) 
2 = +Signal
3 = -Signal