Emtech Electronics RCM-42B - Manual (Page 7)

RCM-42 and RCM-82 Installation and Application Notes
©2003, Emtech Electronics, Inc. All rights reserved.
7
Remote Source Selection
The RCM-42B and RCM-82B can also be used as a remote source selector. Figure 5 shows a way of remotely selecting
one of two program sources to feed a number of rooms. Rooms 1 and 2 can select between music source A or B. Using
the RCM-82B, six rooms can have independent remote selection of two program sources.
Connections:
When using the room combining switch on an Emtech Electronics product, from the IA-204 series, the ground pin for
the room combining function does not need to be connected as long as the IA-204 amplifier and the RCM 42B or
RCM-82B share a common power supply. If each unit has a separate power source, then you will need to make sure
that the ground pin is properly connected.
All amplifiers should have balanced inputs for best operation. If any amplifiers have unbalanced inputs, then the RCM-
42B or RCM-82B should be located as close as possible to the amplifiers inputs.
The shields of any interconnecting cables should be grounded at one end only. A terminal point is provided on each of
the RCM-42B or RCM-82B connectors for grounding both the input and output shields (See Figure 1).
For best results, limit the length of wire between the source selection switches and the RCM to 200 feet.
If you have any suggestions or questions, please call or write us at:
Emtech Electronics, Inc.
1126 No. 1200 West, Orem, UT 84057
Voice: 1-866-200-2878 / 801-426-8333
Fax: 801-426-8334
www.emtechelectronics.com
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