Crown Audio CL Series All Models How to Parallel the Inputs in Stereo Mode, Screw terminal

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CH and CL Series Power Amplifiers

2 Setup

2.7.9 All Models: How to Parallel the Inputs in Stereo Mode

There are three ways to feed the same signal to each amplifier channel:

1. Buy a “Y” cable. Plug the female end into your signal cable, and plug the split male ends into both amplifier inputs.

2. Feed your signal to the Channel-1 input (either barrier-block or XLR/Combo). Connect a jumper wire (Figure 2.18) between the barrier-block Chan- nel-1 (+) screw terminal and the Channel-2 (+) screw terminal. Connect another jumper wire between the Channel-1 (–) screw terminal and the Channel-2

(–) screw terminal.

3. Feed your signal to the Channel-1 input screw terminals. CH1, CH2, CL1 only: Using a male XLR-to-male XLR cable, connect Channel-1 XLR

connector to Channel-2 XLR connector. CH4, CL4 only: Using a stereo phone-to-phone cable, con- nect Channel 1 Combo connector to Channel 2 Combo connector.

2.8 Connect to AC Mains

Connect your amplifier to the AC mains power source (power outlet) with the supplied AC power cordset. First, connect the IEC end of the cordset to the IEC connector on the amplifier; then, plug the other end of the cordset to the AC mains.

WARNING: The third prong of this connector (ground) is an important safety feature. Do not attempt to disable this ground connec- tion by using an adapter or other methods.

Amplifiers don’t create energy. The AC mains volt- age and current must be sufficient to deliver the power you expect. You must operate your amplifier from an AC mains power source with not more than a 10% variation above or a 15% variation below the amplifier’s specified line voltage and within the specified frequency requirements (indicated on the amplifier’s back panel label). If you are unsure of the output voltage of your AC mains, please consult your electrician.

2.9 Startup Procedure

Use the following procedure when first turning on your amplifier:

1.Turn down the level of your audio source.

2.Turn down the level controls of the amplifier.

3.Turn on the “Power” switch. The Power indica- tor should glow.

4.Turn up the level of your audio source to an optimum level.

5.Turn up the Level controls on the amplifier until the desired loudness or power level is achieved.

6.Turn down the level of your audio source to its normal range.

If you ever need to make any wiring or installation changes, don’t forget to disconnect the power cord.

For help with determining your system’s optimum gain structure (signal levels) please refer to the Crown Amplifier Application Guide, available online at www.crownaudio.com.

Figure 2.18 Jumper Positions to Parallel the Inputs

Operation Manual

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Contents Some models may be exported under the name Amcron CH and CL SeriesUse only with a cart, stand, tripod, bracket, or Important Safety InstructionsCrown International, Inc Safety StandardEuropean Representatives Name and Address EMC StandardsTable of Contents How to Use This Manual FeaturesWelcome Unpack Your Amplifier Install Your Amplifier SetupChoose Output Wire and Connectors Choose Input Wire and ConnectorsReinstall no-touch cover to maintain safety Model CH4 Models CH1 and CH2 Switch SettingsRefer to .5 for output connector pin assign- ments Wire Your System Models CH1 & CH2 Stereo ModeModels CH1 & CH2 140V Bridge Mode Model CH4 Bridge Mode Model CH4 Stereo ModeInputs Connect input wiring to Channel Models CL1 & CL2 Stereo Models CL1 & CL2 Bridge ModeModel CL4 Bridge Mode Model CL4 Stereo ModeInputs Connect input wiring to CH1 Startup Procedure All Models How to Parallel the Inputs in Stereo ModeScrew terminal Connect to AC MainsOperation PrecautionsCH and CL Series Front Panel Controls and Indicators Operation Speed Fan-On-Demand If the amplifier output stage stops operating IndicatorsControls Advanced Features Options SST-3632 SST-4622SST-4632 Location of Fault Jack Fault MonitoringAttenuation in dB Precision Detented Level ControlsCH1, CH2, CL1 and CL2 Principles of OperationModels CL1 & CL2 Circuit Block Diagram Power Indicator LED is driven from the low-voltage supplyModel CH4 Circuit Block Diagram CH4 and CL4 Audio Signal PathModel CL4 Circuit Block Diagram Power Supply Operation Amplifier output wires have developed a short circuit TroubleshootingFlashing 120V/60 Hz Units, Bridge mono mode SpecificationsOhms 450W KHz at rated THD Ohms 560WOhms 275W 600WModel CL1 & CL2 CH and CL Series Power Amplifiers Models CH4 & CL4 Damping Factor Typical Output Impedance Following equation is used to calculate thermal dissipation AC Power Draw Thermal DissipationAC Power Draw Thermal Dissipation AC Power Draw Thermal Dissipation CL2 Service 12/01 WarrantyWorldwide Except USA & Canada Mo/day/yr FaxThis page Intentionally Left Blank Individual or Business Name Phone # Fax # Model‰ Personal/Consumer ‰ Business/Corporate
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