QSC Audio CX168 user manual Appendix Description of Stereo & Parallel Operating Modes, Stereo Mode

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APPENDIX: DESCRIPTION OF STEREO & PARALLEL OPERATING MODES

NOTE! In the following diagrams, channels 1 and 2 are shown as examples only. Any channel pair can be configured as shown here. The channels pairs on the CX168 are : Channels 1 and 2, Channels 3 and 4, Channels 5 and 6, and Channels 7 and 8. Therefore, in any example below, replace channel 1 and 2 with the channel pair numbers you are setting up.

Stereo Mode:

Each input signal is sent to its respective channel. Each channel has independent low-frequency (subaudio) filtering, clip limiting, gain control, and output connection.

When to use STEREO input configuration: Use stereo mode for stereo sources (L-R inputs) and any other situation that requires each channel to be completely separate from the other.

How to use STEREO mode:

1- Set the MODE switches for stereo mode operation.

2- Connect the two input signals to CH1 and to CH2 (or signals may be provided from DataPort connection).

3- Connect the two speakers; one to channel 1’s output terminals, one to channel 2’s output terminals.

STEREO MODE OPERATION

NOTE: Ensure that the MODE SWITCHES are set to STEREO when feeding two separate signals to the two channels.

Parallel Mode:

The channel 1 and channel 2 inputs are connected together, applying a single input signal to both channels of the amplifier. A signal into any input jack will drive both channels. Each channel's low frequency filtering, clip limiting, and gain control still function independently. Each channel drives its own speaker load.

You can patch the input signal on to additional amplifiers (daisy chain) by using any of the remaining input jacks. This feature eliminates the need for “Y” cables.

When to use PARALLEL input configuration: Use parallel mode when you need one signal to drive both channels; each channel having its own control (gain, clip limiter, low- frequency filter).

How to use PARALLEL mode:

1- Set the MODE switches for PARALLEL mode.

2- Connect the one input signal to either channel’s input connector. The unused input may be used for daisy chaining the signal to another device or channel pair.

3- Connect the two speakers: one to channel 1’s output terminals, one to channel 2’s output terminals.

PARALLEL MODE OPERATION

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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 Installation Unpacking & Rack Mounting What is IncludedRack Mounting Supporting the Rear of the AmplifierInstallation Cooling & AC Mains Requirements Fan CoolingAC Mains Connection Setup Setting the Mode Configuration DIP Switches SetupSetup Setting the Mode STEREO, PARALLEL, or Bridge ModesSetup Mode Switches Clip Limiter and LOW Frequency Filters Clip LimiterLow Frequency Filter Low Frequency Filtering Tips Frequency Response CurvesConnections INPUTS- Using the Terminal Block Inputs Connections INPUTS- Using the DataPorts Stereo and Parallel Mode Bridge ModeConnections Outputs 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 PlateOperation Using the QSC Dataport Connections DataPort ConnectorsUsing the DataPort General Guidelines to using the DataPorts on the CX168 What Can I Connect to the DataPort?Applications Typical Application Examples Four Room Stereo FeedOFF Stereo Mode Parallel ModeAppendix Description of Stereo & Parallel Operating Modes 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 CX168Warranty Information & HOW to Contact QSC Product WarrantyDisclaimer Page Page
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