Crown Audio S Series Input Sensitivity Switch, Connect to AC Mains, Startup Procedure

Page 11

S-SeriesPower Amplifiers

2 Setup

2.7 Input Sensitivity Switch

A two-position Input Sensitivity switch is located on the back panel near the input connectors (Figure 2.12). Your amplifier is shipped from the factory with this switch set to the 1.4V position. At this setting, a 1.4V input signal will drive the amplifier to full power into an 8-ohm load when the level controls are turned to maximum. This setting works best when the amplifier is being driven by equipment with a +4 dBu output — an output level at which most professional equip- ment operates.

If required, the Input Sensitivity switch can be moved to the 26-dB position, so that the ampli- fier provides a fixed voltage gain of 20 (or 26 dB: 1 volt in, 20 volts out). This setting works best with output levels of +10 dBu (2.5 volts RMS) or more. Some brands of DJ mixers, in particular, have output levels in this range.

Selecting the correct sensitivity will allow your equipment to operate at its optimum level and improve the signal-to-noise of the system.

Make sure the amplifier is turned off and the level controls are turned down before you change the switch setting.

Sensitivity Switch

Figure 2.12 Location of Input Sensitivity Switch

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 connec- tor (ground) is an important safety feature. Do not attempt to disable this ground con- nection by using an adapter or other meth- ods.

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 10% variation above or below the amplifier’s speci- fied line voltage and within the specfied 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 indicator- should glow.

4.Turn up the level of your audio source to an opti- mum 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.

Operation Manual

page 11

Page 10 Page 12
Image 11
Page 10 Page 12
Contents Some models may be exported under the name Amcron SeriesUse 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 Accurate, undistorted sound FeaturesHow to Use This Manual WelcomeYou may also stack amps without using a cabinet SetupUnpack Your Amplifier Install Your Amplifier Balanced Input Connector Wiring Choose Input Wire and ConnectorsNeutrik Speakon Connector Choose Output Wire and Con- nectorsSee the next page for Bridge-Mono wiring Wire Your System Stereo ModeHow to Parallel the Inputs 11 Typical System Wiring, Bridge-Mono Mode Bridge-Mono ModeConnect to AC Mains Input Sensitivity SwitchSensitivity Switch Startup ProcedureOperation PrecautionsControls, Indicators and Connectors Clip Indicators Front Panel Controls Indicators Power SwitchReset Switch Fault IndicatorsAdvanced Features Options SST-4632 SST-4622SST-3632 Location of Fault Jack Fault MonitoringTamper-Resistant Hole Plugs Options AccessoriesAlternate Output Connectors Optional 0.775 V Input Sensitivity SettingPrinciples 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.
Top Page Image Contents