QSC Audio CX168 Important Safety Precautions Explanation of Symbols, FCC Interference Statement

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IMPORTANT SAFETY PRECAUTIONS

& EXPLANATION OF SYMBOLS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous” voltage within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in this manual.

The lightning flashes printed next to the OUTPUT terminals of all ISA amplifiers are intended to alert the user to the risk of hazardous energy. Output connectors that could pose a risk are marked with the lightning flash.

Do not touch output terminals while amplifier power is on. Make all connections with amplifier turned off.

WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

This amplifier has a serial number located on the rear panel.

Please write this and the model number down and keep them for your records.

Model: CX168

Serial Number:______________________________

Date of Purchase:____________________________

Purchased From:_____________________________

FCC INTERFERENCE STATEMENT

NOTE: This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by switching the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

-Reorient or relocate the receiving antenna.

-Increase the separation between the equipment and the receiver.

-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

-Consult the dealer or an experienced radio or TV technician for help.

© Copyright 2001, QSC Audio Products, Inc.

QSC® is a registered trademark of QSC Audio Products, Inc.

“QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office

The Audio Precision logo is the property of Audio Precision, Beaverton OR

All trademarks are the property of their respective owners.

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Contents CX168 Important Safety Precautions Explanation of Symbols FCC Interference StatementTable of Contents Introduction Front Panel Front Panel with Security PlateRear Panel Dimensions Mounting Points Rack Mounting Installation Unpacking & Rack MountingWhat is Included Supporting the Rear of the AmplifierAC Mains Connection Installation Cooling & AC Mains RequirementsFan Cooling Setup Setting the Mode Configuration DIP Switches SetupSetup Setting the Mode STEREO, PARALLEL, or Bridge ModesLow Frequency Filter Setup Mode Switches Clip Limiter and LOW Frequency FiltersClip Limiter Low Frequency Filtering Tips Frequency Response CurvesConnections INPUTS- Using the Terminal Block Inputs Connections INPUTS- Using the DataPorts Connections Outputs Stereo and Parallel ModeBridge Mode OutputsConnections OUTPUTS- Using the Terminal Block Connectors Terminal Block ConnectionsOperation Power Switch and Gain Controls Power SwitchOperation LED Indicators LED IndicatorsOperation Gain Controls Gain ControlsOperation Gain Control Security Plate Gain Control Security PlateUsing the DataPort Operation Using the QSC Dataport ConnectionsDataPort Connectors General Guidelines to using the DataPorts on the CX168 What Can I Connect to the DataPort?Applications Typical Application Examples Four Room Stereo FeedOFF Appendix Description of Stereo & Parallel Operating Modes Stereo ModeParallel Mode Appendix Description of Bridge Operating Mode Normal Operating LevelsAppendix Multiple Speaker Loads in Series Multiple Lo-Z Loads in SeriesAppendix Multiple Speaker Loads in Parallel Multiple Lo-Z Loads in ParallelTroubleshooting no Sound Problem no SoundProblem Hiss SPECIFICATIONSCX168 Output Power in wattsSpecifications CX168Disclaimer Warranty Information & HOW to Contact QSCProduct Warranty Page Page