QSC Audio CX168 user manual Connections INPUTS- Using the Terminal Block Inputs

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CONNECTIONS: INPUTS- Using the Terminal Block Inputs

Each channel has an active balanced "Euro-style" terminal block input jack. These terminal blocks allow the input wiring to be terminated using simple hand tools and allows for quick reconfiguration when needed. The input impedance is 20k ohm balanced or 10k ohm unbalanced.

Balanced connection is recommended for all audio inputs. Balanced signals are less prone to AC hum and other electrical noise. Unbalanced signals can be suitable for short cable runs. The signal source's output impedance should be less than 600 ohms to avoid high frequency loss in long cables.

If the DataPort is being used for the input signal source, the terminal block connections should not be used for inputs. However, they may be used for daisy chaining the DataPort input signal to other channels or amplifiers. The signal available from the terminal block input connections will be about 10 dB lower than the signal presented to the DataPort.

TERMINAL BLOCK

CONNECTORS

Terminal Block Connectors:

Balanced inputs: Connect the conductors to the connector as shown.

Unbalanced inputs: Connect the conductors to the connector as shown. Make sure that the unused side of the balanced input is connected to ground, as shown.

shield

Terminal block: balanced connections

jumper

shield

Terminal block: unbalanced connections

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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