PowerLinx Multi-channel Sound Reinforcement Systems - Tannoy

POWERLINX PLC4.1 CONTROLLER
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Set-Up and Testing
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.