8
Set-Up and Testing
POWERLINX PLC4.1 CONTROLLER
Before applying power to the system, insure that all audio connections are properly
terminated and all level controls including the control room feeds are set to minimum.
Once your system is fully wired to a sound source and speakers, a careful balancing of all levels is necessary to provide
pleasing sound levels, adequate audio headroom, and system protection from excessive volume or overdriving.
System Commisioning Procedure-
Unless fitted with a remote volume control, all level adjustments (excepting the control room feeds) are performed on
the PLC4.1 Controller.
1) Set all level controls to minimum. Remove security covers and set all
FILTER SELECT
switches to
FULL FREQUENCY
.
2) Plug the PLA4.1 into a 110vac wall output.
3) Set
MASTER LEVEL
control to mid position.
4) Start the music source and adjust audio feeds to mid position.
5) Adjust
CH 1
through
CH 4 LEVEL
controls to their desired operating levels. If satisfactory levels cannot be
achieved, increase the
MASTER LEVEL
control and readjust the channel levels if necessary.
6) Switch
FILTER SELECT
switches to their
DOWN
position (80 Hz high-pass) for those speakers that will be used
in conjunction with a subwoofer, or cannot reproduce frequencies below 80 Hz.
7) Adjust the
SUB LEVEL
control until the subwoofer level is balanced with its main speakers.
Note that the use of high-pass filters will increase the overall system headroom by several dB.
8) Once all levels are satisfactory, reinstall the security covers on the PLC4.1.
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