Crown Audio S Series Front Panel Controls Indicators Power Switch, Reset Switch, Fault Indicators

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S-SeriesPower Amplifiers

3 Operation

3.3 Front Panel Controls and

Indicators

Power Switch

The power switch turns the amplifier on or off.

Note that dangerous voltages may still be present in the amplifier even when the power switch is in the off position. Before moving the amplifier or making any wiring or instal- lation changes, it is important to also disconnect the power cord from the amplifier or power source.

Reset Switch

The push-button reset switch is used to reset the circuit breaker that protects the power supply.

Fault Indicators

Two red LEDs (one for each channel) are located on the front panel. The Fault Indicators are normally OFF, but will blink under five different conditions:

1. When the amplifier is first powered up, until the unit is ready for operation.

2. If the heatsinks reach a temperature above normal working limits.

3. If the transformer thermal protection circuit is activated.

4. If the amplifier output wires develop a short-cir- cuit.

5. If the amplifier output stage stops operating.

The fault status of the amplifier can also be moni- tored remotely by attaching a signalling device to the Fault jack located on the amplifier back panel.

See Section 4.2.2 in this manual for more informa-

tion on fault monitoring and suggestions for signal- ling device circuity.

Some fault conditions may cause the output of the amplifier to be muted.

Clip Indicators

These are two red LEDs (one per channel). The Clip Indicator turns on when distortion is audible in the amplifier output.

Signal Indicators

These are two green LEDs (one per channel). The Signal Indicator illuminates when a signal (> –40 dBm) is present at the INPUT of the amplifier for that channel. Because these indicators receive the signal before the level controls, they can be used to troubleshoot wiring problems within a system. If the Signal indicator for a channel is not lit, no signal is reaching the amplifier on that channel.

Power Indicator

The green Power indicator lights when your S- Series amp has been turned on and has power.

Level Controls

Two rotary detented Level controls (one for each channel) are are used to adjust each channel’s out- put.

If you wish, the level control knobs may be pulled from the front panel and the holes plugged with the supplied caps to minimize tampering of control set- tings.

3.4Back Panel Controls and Connectors

Input Sensitivity Switch

This two-position Input Sensitivity switch is located near the input connectors. It lets you select between

1.4V input sensitivity or 26 dB gain. Please see Section 2.7 in this manual for details.

Mode Switch

This two-position switch selects either Stereo or Bridge-Mono mode of operation. Stereo mode pro- vides identical power output to each of the two amplifier output channels. Bridge-Mono mode combines the two amplifier output channels into a single mono channel with twice the voltage of a sin- gle stereo channel.

Do NOT select Bridge-Mono mode without first making sure the amplifier has been wired in a Bridge-Mono configuration. For more information on wiring for Bridge-Mono mode, see Section 2.6.2.

Fault Jack

This is an RJ-11 jack (which looks like a telephone jack). By attaching a signaling device to the Fault jack, you can monitor the amplifier’s Fault status from a remote location. See Section 4.2.2 for more information on fault monitoring.

Barrier Block Inputs

For each channel, this row of screw terminals pro- vides a balanced input, which is in parallel with the channel’s Combo input connector.

Neutrik Combo Input

One per channel, this combination 1/4-inch phone jack and XLR connector provides a balanced or unbalanced input.

Neutrik Speakon® Output

One per channel, this Neutrik Speakon® connector with four terminals connects to loudspeakers.

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Operation Manual

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Contents Series Some models may be exported under the name AmcronUse only with a cart, stand, tripod, bracket, or Important Safety InstructionsSeries amplifiers require Class 2 output wiring Family Name S-Series Model Names S-2,S-3 EMC Standards Safety StandardCrown International, Inc Table of Contents Welcome FeaturesHow to Use This Manual Accurate, undistorted soundYou may also stack amps without using a cabinet SetupUnpack Your Amplifier Install Your Amplifier Choose Input Wire and Connectors Balanced Input Connector WiringChoose Output Wire and Con- nectors Neutrik Speakon ConnectorSee the next page for Bridge-Mono wiring Wire Your System Stereo ModeHow to Parallel the Inputs Bridge-Mono Mode 11 Typical System Wiring, Bridge-Mono ModeStartup Procedure Input Sensitivity SwitchSensitivity Switch Connect to AC MainsPrecautions OperationControls, Indicators and Connectors Fault Indicators Front Panel Controls Indicators Power SwitchReset Switch Clip IndicatorsAdvanced Features Options SST-4632 SST-4622SST-3632 Fault Monitoring Location of Fault JackOptional 0.775 V Input Sensitivity Setting Options AccessoriesAlternate Output Connectors Tamper-Resistant Hole PlugsPower LED is driven from the low-voltage supply Principles of OperationSeries Amplifier Block Troubleshooting Condition Power indicator is offSpecifications 120 VAC, 60 Hz Units, Bridge mono modeService Warranty Worldwide Except USA & CanadaThis 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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