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).
FIG. 32
Auxiliary 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