Crown Audio CH Series, CL Series operation manual Operation, Precautions

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CH and CL Series Power Amplifiers

3 Operation

3.1 Precautions

Your amplifier is protected from internal and exter- nal faults, but you should still take the following precautions for optimum performance and safety:

1.Before use, your amplifier first must be config- ured for proper operation, including input and output wiring hookup. Improper wiring can result in serious operating difficulties. For information on wiring and configuration, please consult the Setup section of this manual or, for advanced setup techniques, consult Crown’s Amplifier Application Guide available online at www.crownaudio.com.

2.Use care when making connections, selecting signal sources and controlling the output level. The load you save may be your own!

3.Do not short the ground lead of an output cable to the input signal ground. This may form a ground loop and cause oscillations.

4.WARNING: Never connect the output to a power supply, battery or power main. Electrical shock may result.

5.Tampering with the circuitry, or making unau- thorized circuit changes may be hazardous and invalidates all agency listings.

6.Do not operate the amplifier with the red Clip LEDs constantly flashing.

7.Do not overdrive the mixer, which will cause clipped signal to be sent to the amplifier. Such signals will be reproduced with extreme accu- racy, and loudspeaker damage may result.

8.Do not operate the amplifier with less than the rated load impedance. Due to the amplifier’s output protection, such a configuration may result in premature clipping and speaker dam- age.

Remember: Crown is not liable for damage that results from overdriving other system components.

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Operation Manual

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Contents CH and CL Series Some models may be exported under the name AmcronImportant Safety Instructions Use only with a cart, stand, tripod, bracket, orEuropean Representatives Name and Address Safety StandardCrown International, Inc EMC StandardsTable of Contents Welcome FeaturesHow to Use This Manual Setup Unpack Your Amplifier Install Your AmplifierReinstall no-touch cover to maintain safety Choose Input Wire and ConnectorsChoose Output Wire and Connectors Switch Settings Model CH4 Models CH1 and CH2Models CH1 & CH2 140V Bridge Mode Wire Your System Models CH1 & CH2 Stereo ModeRefer to .5 for output connector pin assign- ments Inputs Connect input wiring to Channel Model CH4 Stereo ModeModel CH4 Bridge Mode Models CL1 & CL2 Bridge Mode Models CL1 & CL2 StereoInputs Connect input wiring to CH1 Model CL4 Stereo ModeModel CL4 Bridge Mode Screw terminal All Models How to Parallel the Inputs in Stereo ModeStartup Procedure Connect to AC MainsPrecautions OperationCH and CL Series Front Panel Controls and Indicators Operation Speed Fan-On-Demand Controls IndicatorsIf the amplifier output stage stops operating Advanced Features Options SST-4632 SST-4622SST-3632 Fault Monitoring Location of Fault JackPrecision Detented Level Controls Attenuation in dBPrinciples of Operation CH1, CH2, CL1 and CL2Power Indicator LED is driven from the low-voltage supply Models CL1 & CL2 Circuit Block DiagramCH4 and CL4 Audio Signal Path Model CH4 Circuit Block DiagramModel CL4 Circuit Block Diagram Power Supply Operation Flashing TroubleshootingAmplifier output wires have developed a short circuit Specifications 120V/60 Hz Units, Bridge mono modeOhms 275W KHz at rated THD Ohms 560WOhms 450W 600WModel CL1 & CL2 CH and CL Series Power Amplifiers Models CH4 & CL4 Damping Factor Typical Output Impedance AC Power Draw Thermal Dissipation Following equation is used to calculate thermal dissipationAC Power Draw Thermal Dissipation AC Power Draw Thermal Dissipation CL2 Service Warranty 12/01Worldwide Except USA & Canada Fax Mo/day/yrThis page Intentionally Left Blank ‰ Personal/Consumer ‰ Business/Corporate ModelIndividual or Business Name Phone # Fax #