Wiring and Connections
39
Metreau Keypads Instruction Manual
SWT Special Wiring Configurations
Auxiliary Amplifier Configuration
In some cases you may require more power for a given zone than the Matrix Controller can provide. You may purchase a DAS-LLC
to provide a line level output to incorporate a larger external amplifier, or you can make your own line level converter. FIG. 32 shows
the construction of a simple circuit of discrete components to reduce the "speaker level" output of the Matrix Controller to “line
level" so that it can drive an auxiliary amplifier.
This amplifier would typically be installed at the equipment rack (head end).
Remote Amplifier Configuration
In some cases, where the distance between the Matrix Controller and the zone is unusually long, it is sometimes desirable to have a
remote amplifier at the zone end. You may install a DAS-LLC to accomplish this task or you may build your own. FIG. 33 shows the
construction of a simple circuit of discrete components to reduce the Matrix Controller output to “line- level” so that it can be fed
into an auxiliary amplifier.
FIG. 32
Auxiliary Amplifier Configuration
FIG. 33
Remote Amplifier Configuration
Matrix Controller
Zone Output Terminal Connector
DATA
Ground (-)
Left Speaker
Right Speaker
Left RCA Jack to Amp
Right RCA Jack to AMP
R1
R2
R3
R4
Right Speaker
Left Speaker
Metreau keypad
R1, R3 = 47K 1/4 Watt Resistor
R2, R4 = 10K 1/4 Watt Resistor
Terminator
Matrix Controller
Zone Output Terminal Connector
Left RCA Jack to Amp
Right RCA Jack to AMP
R1
R2
R3
R4
R1, R3 = 47K 1/4 Watt Resistor
R2, R4 = 10K 1/4 Watt Resistor
Left Audio
Right Audio
Data
Ground
