Crown Audio S Series operation manual Troubleshooting, Condition Power indicator is off

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S-SeriesPower Amplifiers

6 Troubleshooting

CONDITION: Power indicator is off.

POSSIBLE REASON

• The amplifier has lost AC power.

• The amplifier’s Power switch is off.

• The amplifier’s power cord is not plugged in at either end.

• The amplifier’s circuit breaker has tripped. Allow the amplifier to cool, remove excessive loads, and press the reset switch on the front panel.

CONDITION: No input signal (Signal indi- cator is not flashing even though audio is applied).

POSSIBLE REASON:

• Input signal level is very low.

• Master audio from mixer turned down.

• Input cable broken or not plugged in.

• Front-panel Level controls are turned down.

CONDITION: Fault indicator is flashing.

POSSIBLE REASON:

• The amplifier has just been turned on and is still in the 4-second turn-on delay.

• The heatsinks are too hot.

• The transformer thermal protection is activated.

• The amplifier output wires have developed a short circuit.

• The amplifier output stage has stopped operat- ing. Refer the unit to an authorized Crown Ser- vice Center

The fault status of the amplifier can also be moni- tored remotely by attaching a signal device to the Fault jack located on the amplifier back panel. See Section 4.2.2 for more detail.

CONDITION: Distorted sound.

POSSIBLE REASON:

•Load is wired incorrectly or Stereo/Mono mode switch is set incorrectly. Check both.

•Input signal level is too high. Turn down your amplifier level controls, or turn down the input signal, until the clip LED goes out.

Note: If sound is distorted but clip LED is not flash- ing, check mixer levels and gain staging, mixer clip lights, and pads built into microphones.

CONDITION: Input signal but no sound.

POSSIBLE REASON:

•Speakers not connected. Make sure the Neutrik NL4 connector is fully seated and locked.

Operation Manual

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Contents Some models may be exported under the name Amcron SeriesImportant Safety Instructions Series amplifiers require Class 2 output wiringUse only with a cart, stand, tripod, bracket, or Safety Standard Crown International, IncFamily Name S-Series Model Names S-2,S-3 EMC Standards Table of Contents How to Use This Manual FeaturesWelcome Accurate, undistorted soundSetup Unpack Your Amplifier Install Your AmplifierYou may also stack amps without using a cabinet Balanced Input Connector Wiring Choose Input Wire and ConnectorsNeutrik Speakon Connector Choose Output Wire and Con- nectorsWire Your System Stereo Mode How to Parallel the InputsSee the next page for Bridge-Mono wiring 11 Typical System Wiring, Bridge-Mono Mode Bridge-Mono ModeSensitivity Switch Input Sensitivity SwitchStartup Procedure Connect to AC MainsOperation PrecautionsControls, Indicators and Connectors Reset Switch Front Panel Controls Indicators Power SwitchFault Indicators Clip IndicatorsAdvanced Features Options SST-4622 SST-3632SST-4632 Location of Fault Jack Fault MonitoringAlternate Output Connectors Options AccessoriesOptional 0.775 V Input Sensitivity Setting Tamper-Resistant Hole PlugsPrinciples of Operation Power LED is driven from the low-voltage supplySeries Amplifier Block Condition Power indicator is off Troubleshooting120 VAC, 60 Hz Units, Bridge mono mode SpecificationsService Worldwide Except USA & Canada WarrantyThis page intentionally left blank SeriesPower Amplifiers Crown Audio Factory Service Information

S Series specifications

Crown Audio's S Series amplifiers are renowned in the professional audio industry for their excellent sound quality, reliability, and advanced technology. Designed to meet the needs of both touring and installation applications, the S Series has gained a reputation for delivering powerful performance and exceptional value.

At the heart of the S Series is Crown's patented DriveCore technology, which integrates the power amplifier's drive and output stage into a single chip. This innovation reduces the size and weight of the amplifier while improving efficiency and thermal performance. As a result, users can expect less heat generation and the ability to drive loads with ease, ultimately leading to longer operational life and reduced energy costs.

One of the standout features of the S Series is its output power options, which offer a range of configurations to suit various applications. The amplifiers provide up to 6000 watts, ensuring that they can handle large-scale events and venues with demanding audio needs. The S Series also includes advanced signal processing capabilities, including EQ and limiting, allowing users to further refine their sound.

The S Series amplifiers are built with durability in mind. They feature rugged construction, including a steel chassis and highly-efficient internal components, making them suitable for both touring environments and permanent installations. Additionally, the amplifiers are designed for ease of use, with an intuitive front panel interface that includes LED indicators for power, signal, and thermal status.

Connectivity is another strength of the S Series. The amplifiers offer a variety of input and output options, ensuring compatibility with different audio sources and speaker systems. The built-in network capabilities allow for remote monitoring and control via Crown’s Software, enhancing flexibility and convenience in live sound scenarios or fixed installations.

The S Series amplifiers also boast a high signal-to-noise ratio and low total harmonic distortion, ensuring pristine audio reproduction. This is crucial for professional sound systems, where clarity and fidelity are paramount for delivering an exceptional listener experience.

Overall, Crown Audio's S Series amplifiers combine state-of-the-art technology, robust performance, and user-friendly features, making them a preferred choice among audio professionals worldwide. Whether for a concert, theater, or nightclub, the S Series delivers the power and reliability needed to ensure outstanding sound quality every time.
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