RCM Installation and Application Notes RCM-42B and RCM-82B 06-12-2003 Emtech Electronics, Inc. 564 So.
RCM-42 and RCM-82 Installation and Application Notes Quick Start Installation Guide for the RCM-42B & RCM-82B Description: The Emtech Electronics Room Combining Matrices are designed to simplify the process of connecting sound systems in multiple rooms. The RCM-42B allows the sound systems from up to four rooms to combine in any combination desired, while the RCM-82B does the same for up to 8 rooms.
RCM-42 and RCM-82 Installation and Application Notes The input connection terminals are shown in Figure 1. The input signals can come from any balanced or unbalanced line level source such as a mixer/amplifier. The shield of a balanced line should be connected to the terminal marked GND on the matrix. When the source is unbalanced, strap the "input -" terminal to the GND terminal.
RCM-42 and RCM-82 Installation and Application Notes Block Diagram If a given input's Group A (or B) control terminal is connected to ground, that input will be mixed with all other room inputs with corresponding Group A (or B) terminals connected to ground. The mixed signal will be routed back to each of the outputs with inputs assigned to that group.
RCM-42 and RCM-82 Installation and Application Notes Applications: Customized Diverse System The RCM-42B and RCM-82B can be used with any mixer/amplifier combination with line level outputs, or as a standalone zone control/distribution/summing unit. Figure 3 shows the different ways that the RCM-42 can be wired in a combining application.
RCM-42 and RCM-82 Installation and Application Notes Room Three is shown using an Emtech Electronics IA204-R including mic/line level inputs, pre-amp, mixer, 20 watt amplifier and integrated RCM switching. This in-wall amplifier/mixer includes a locking cover to prevent tampering. The IA204-R single unit coupled with speakers provides the entire sound reinforcement package for a small room.
RCM-42 and RCM-82 Installation and Application Notes 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.
