This Master Station Expansion Panel is a 4-channel expansion unit with 2.0 amp power supply that connects seamlessly to the TX-MS2002 Master Station
The EMS-4001 adds four (4) powered intercom channels to an MS-2002 or 2001 Master Station, and it provides talk, listen and call
buttons for the added channels. Up to four (4) EMS-4001 Expansion Master Stations may be connected to the MS-2002 or 2001
allowing up to 16 channels (18 channels total). The MS-20012 microphone is used to talk back to the EMS-4001 channels, and the MS-2002 speaker is typically used for listening. However, there are also separate speaker jacks on the back panel of the EMS-4001 for independent monitor speakers, if desired. There are also four (4) additional program inputs on the back of the EMS-4001, one (1) for each added channel.
The MS-2002/ EMS-4001 combination can be used as a simple, multi-channel intercom user stations. In this configuration, the program inputs (and possibly the PA output of the MS-2001) are most likely not used, and the station operator has only talk, listen and call capability. It is also possible the advanced features of the MS-2001, such as Mic Kill Send, might be turned off.
Alternatively, the MS2002/ EMS-4001 can be used as a master station. In this application, one (1) or more program inputs and the PA output may be connected, and the program signals to the intercom channels can be turned on or off from the MS-2001. Additionally, the Mic Kill Send feature can be enabled, and microphones on any channels may then be turned off from the MS-2001.