QSC Audio CX168 user manual Setup Setting the Mode STEREO, PARALLEL, or Bridge, Modes

Page 9

SETUP: SETTING THE MODE: STEREO, PARALLEL, OR BRIDGE

Modes

The following descriptions apply to a channel pair (such as Ch. 1 & 2 or Ch. 7 & 8). It is possible to set each channel pair’s mode differently and customize the system configuration. All possible combinations will not be shown. The following describes the behavior of one channel pair in the three modes of operation and the BRDG and PAR LED’s:

Stereo- Stereo mode supports two completely separate audio channels, usually referred to as ‘left’ and ‘right’. Stereo configurations have two separate input signals and two separate output signals.

Mode switch settings and LED indication for stereo mode operation.

BRDG and PAR indicators should not be illuminated when in stereo mode.

Parallel- Parallel mode applies one input signal to both channels. Both inputs of a channel pair are connected in parallel when the mode switch is set for parallel, therefore, connect only one input per channel pair when in parallel mode. The outputs are connected the same as stereo mode. Each speaker will be supplied the same signal, which is still controlled by that channel’s gain control.

Mode switch settings and LED indication for parallel mode operation. PAR indicator should be illuminated and BRDG indicator should not be illuminated when in parallel mode.

Bridge- Bridge mode combines the two channels of a pair (such as Ch. 3 & Ch. 4) into one higher- powered channel. Like parallel mode, both inputs of a channel pair are connected in parallel when the mode switch is set for parallel, therefore, connect only one input per channel pair when in bridge mode. There are 4 possible channel pairs that can be bridged on the CX168. They are Ch.1-2 Bridge, Ch. 3-4 Bridge, Ch. 5-6 Bridge, and Ch. 7-8 Bridge. Any pair or number of pairs can be independently configured in bridge mode. Use the first channel’s input and gain control when in bridge mode. The second channel’s gain control is non-operative and should be turned all the way down.

Mode switch settings and LED indication for parallel mode operation. BRDG indicator and PAR indicator should be illuminated when in bridge mode.

Note! Do not connect more than one input per channel pair when operating in parallel or bridge mode. However, in parallel or bridge mode, the unused input terminals may be used for daisy-chaining the input signal to other channels of the CX168 or to other amplifiers.

For pictorial description of operating modes, see Appendix.

9

Page 8 Page 10
Image 9
Page 8 Page 10
Contents CX168 FCC Interference Statement Important Safety Precautions Explanation of SymbolsTable of Contents Front Panel Front Panel with Security Plate IntroductionRear Panel Dimensions Mounting Points What is Included Installation Unpacking & Rack MountingRack Mounting Supporting the Rear of the AmplifierInstallation Cooling & AC Mains Requirements Fan CoolingAC Mains Connection Setup Setup Setting the Mode Configuration DIP SwitchesModes Setup Setting the Mode STEREO, PARALLEL, or BridgeSetup Mode Switches Clip Limiter and LOW Frequency Filters Clip LimiterLow Frequency Filter Frequency Response Curves Low Frequency Filtering TipsConnections INPUTS- Using the Terminal Block Inputs Connections INPUTS- Using the DataPorts Bridge Mode Stereo and Parallel ModeConnections Outputs OutputsTerminal Block Connections Connections OUTPUTS- Using the Terminal Block ConnectorsPower Switch Operation Power Switch and Gain ControlsLED Indicators Operation LED IndicatorsGain Controls Operation Gain ControlsGain Control Security Plate Operation Gain Control Security PlateOperation Using the QSC Dataport Connections DataPort ConnectorsUsing the DataPort What Can I Connect to the DataPort? General Guidelines to using the DataPorts on the CX168Four Room Stereo Feed Applications Typical Application ExamplesOFF Stereo Mode Parallel ModeAppendix Description of Stereo & Parallel Operating Modes Normal Operating Levels Appendix Description of Bridge Operating ModeMultiple Lo-Z Loads in Series Appendix Multiple Speaker Loads in SeriesMultiple Lo-Z Loads in Parallel Appendix Multiple Speaker Loads in ParallelProblem no Sound Troubleshooting no SoundProblem Hiss Output Power in watts SPECIFICATIONSCX168CX168 SpecificationsWarranty Information & HOW to Contact QSC Product WarrantyDisclaimer Page Page
Top Page Image Contents