Page: 46 Model MRC44
© 2002 Xantech Corporation
ZONE EXPANSION USING MULTIPLE MRC44 CONTROLLERS
Two MRC44 Controllers can be used to expand the number of zones in a MRC44 system to eight. When doing
so there are additional Xantech components that will have to be added to the system.
1. AV61 Audio/Video Six Way Distribution Amplifier. This device allows the single A/V outputs of source
components to be properly split to the inputs of both MRC44 Controllers. System requirement: 1 per source.
2. 793-10 Serial Control Combiner. This device combines the IR outputs from multiple MRC44 Controllers to
drive a single emitter. System requirement: 1 per source.
Source A/V Distribution and Power Management
The Application Diagram, Figure 24, shows two MRC44 Controllers being used in a four-source, eight-zone
system. Each of the source components, DVD, SAT, VCR, CD have their A/V outputs running through an AV61
to the A/V inputs on the two MRC44 Controllers. In this configuration, any one of the eight zones in the system
can select and monitor any of the four sources program material.
AV61 Connections
1. Connect the A/V output of source 1 to the A/V input on the AV61. Connect output 1 on the AV61 to input 1
on the Primary MRC44 Controller.
2. Connect output 2 on the AV61 to input 1 on the Secondary MRC44 Controller.
3. Repeat for all sources.
Combining IR Outputs
Application Diagram, Figure 24, also shows multiple 793-10s being used to combine the IR outputs from the
two MRC44 Controllers so no more than one emitter need be used for any source component. Any time an IR
code is sent to a specific source from either MRC44 Controller, it will be run through the 793-10 Serial Control
Combiner and out to the emitter for that source.
793-10 Connections
1. Using a mono mini to mini plug cable, [Xantech P/N 6015900 (5’ cable) P/N 6017450 (10’ cable)] connect
IR out 1 from the Primary MRC Controller to input 1 on the 793-10.
2. Using a mono mini to mini plug cable, connect IR out 1 from the Secondary MRC Controller to input 2 on
the 793-10.
3. Plug the emitter for source 1 into control output A on the 793-10.
4. Attach the emitter to the IR eye on component to be controlled.
5. Repeat for as many sources used.
IMPORTANT NOTE: Internal Amplifier Commands cannot be communicated from Controller to Controller.
These commands can be used for zones running through a single Controller.
