Crown Audio CH Series, CL Series operation manual Model CH4 Stereo Mode, Model CH4 Bridge Mode

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CH and CL Series Power Amplifiers

2Setup

2.7.3Model CH4 Stereo Mode

See Figure 2.12. In this example, Channel 1 is wired to a 4/8 ohm load and Channel 2 is wired to a 70V load.

Make sure the Mode switch is set to the “Stereo” position. Set the Channel Operation Switch to 4/8 ohms on Channel1, and to 70V on Channel 2.

INPUTS: Connect input wiring for each channel.

OUTPUTS:

•Connect Channel 1 positive (+) speaker lead to Channel 1 positive (+) terminal of amp.

•Connect Channel 1 negative (–) speaker lead to Channel 1 negative (–) output terminal of amp.

•Connect Channel 2 positive (+) transformer lead to Channel 2 positive terminal of amp.

•Connect Channel 2 negative (–) transformer lead to Channel 2 negative (–) output terminal of amp.

Refer to Section 2.5 for output connector pin assignments.

2.7.4 Model CH4 Bridge Mode

See Figure 2.13. In this example, a 4/8-ohm load is connected in Bridge Mono across the positive terminals of Channel 1 and Channel 2. Both Channel Operation Switches are set to 4/8 ohms. Make sure the Mode switch is set to the “Bridge” position.

NOTE: When operating in Bridge-Mono mode, turn down (full CCW) the level control for Channel 2, as the Channel-1 level control works both channels.

INPUTS: Connect input wiring to Channel 1.

OUTPUTS: Connect positive (+) speaker lead to Channel 1 positive (+) terminal of amp. Connect negative (–) speaker lead to Channel 2 positive

(+)terminal of amp. Do not connect to negative output terminals.

Refer to Section 2.5 for output connector pin assignments.

8 or 4 ohms

70 V

Figure 2.12 Model CH4 Wiring for Stereo Mode

(Shown with No-Touch Cover Removed)

+

Mixer

Figure 2.13 Model CH4 Wiring for Bridge Mode

(Shown with No-Touch Cover Removed)

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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 How to Use This Manual FeaturesWelcome Setup Unpack Your Amplifier Install Your AmplifierChoose Output Wire and Connectors Choose Input Wire and ConnectorsReinstall no-touch cover to maintain safety Switch Settings Model CH4 Models CH1 and CH2Refer 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 Bridge Mode Models CL1 & CL2 StereoModel CL4 Bridge Mode Model CL4 Stereo ModeInputs Connect input wiring to CH1 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 If the amplifier output stage stops operating IndicatorsControls Advanced Features Options SST-3632 SST-4622SST-4632 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 Amplifier output wires have developed a short circuit TroubleshootingFlashing 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 Individual or Business Name Phone # Fax # Model‰ Personal/Consumer ‰ Business/Corporate