Crown Audio I-Tech Series Troubleshooting, Amplifier’s Power switch is off, Rated range

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I-Tech Series Power Amplifiers

5 Troubleshooting

CONDITION: Power indicator is off and power switch is not illu- minated.

POSSIBLE REASON

• The amplifier has lost AC power.

• The amplifier is not plugged into the power receptacle.

• Rear-panel breaker is off.

CONDITION: Thermal indicator is on.

POSSIBLE REASON:

•The amplifier is becoming too hot for safe operation. Allow amplifier to cool. Check for loads less than 2 ohms, and for excessive input levels. Check for proper ventilation.

CONDITION: Power indicator is off and power switch is illumi- nated.

POSSIBLE REASON

• The amplifier’s Power switch is off.

CONDITION: Power indicator is flashing.

POSSIBLE REASON:

•The AC line voltage has dropped below 15% or has risen above 15% of the

rated range.

“Off/Flashing/On” means that the LED can be off, or flashing, or on.

CONDITION: Fault indicator is flashing.

POSSIBLE REASON:

•The amplifier channel has stopped oper- ating. Refer the unit to an authorized Crown Service Center.

CONDITION: Distorted sound.

POSSIBLE REASON:

•Load is wired incorrectly or Output Mode switch in LCD-screen menu is set incor- rectly. Check both.

•Input is overloaded by a signal level that is too high. Turn down your amplifier level controls (Encoders), or turn down the input signal, until the clip light goes out.

Note: If the signal sounds distorted even though the Clip LED is off, the input signal may be distorted before it reaches the amplifier input. Check gain staging and output levels of the mixer or preamp.

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Operation Manual

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Contents T4000 T6000 T8000 Some models may be exported under the name Amcron137289-10 11/07Important Safety Instructions Importantes Instructions de SécuritéSafety Standard European Representatives Name and AddressFamily Name I-Tech EMC StandardsGetting Started With I-Tech Quick-Start Guide Stereo WiringFor bridge-mono operation, see Quick-Start Guide Bridge-Mono Wiring Figure A.5 Rear Panel Connections for Bridge-Mono WiringTable of Contents Features High power density, up to 8000 watts in a 2U chassisAnalog and digital thru connectors How to Use This ManualSetup Unpack and Install Your AmplifierConnecting to AC Mains Wire Inputs and Outputs Wiring basicsChoose Output Wire and Connectors Choose Input Wire and ConnectorsDistance Stereo Mode Wiring Important Turn off the amplifier and unplug its power cordBridge-Mono Mode Reach maximum attenuationStartup Procedure PrecautionsOperation Protecting Your SpeakersFront Panel Controls and Indicators Cooling Vents Back Panel Controls, Indica- tors and Connectors Fans Advanced Operation Table of Contents Advanced OperationNavigating the LCD Control Screen Introduction Attenuation and Bar MetersMute/Unmute Front Panel LockoutMenu/Exit Prev Prev CH1 LF-1&2 CH2 LF-3&4OFF v Digital DIG Analog AnlgOFF 114 Press Menu/Exit Operation Example Operation ExamplesMenu Tree Presets Introduction User PresetsDownloadable Presets Digital Audio Options AES/EBUNetwork Setup Wizard Fix Errors IndividuallySelect Network Card Address Devices on the NetworkInput Signal Level Monitor Power/ Standby ControlSignal Mute Error ReportingInput Signal Compressor/Limiter Average Power LimiterMemory Backup Configuration Clip EliminatorInput Signal Router Delay LatencyFilters Noise GeneratorAmplifier’s Power switch is off TroubleshootingRated range Speakers not connected Open circuit due to speaker failure Input signal level is very lowEthernet link is broken Specifications PerformanceHz 20 kHz with 0.35% THD Latency digital inputsCrosstalk below rated power, 20 Hz to 1 kHz Common Mode Rejection CMR 20 Hz to 1 kHzAC Line Connector DimensionsCharts Typical Frequency Response 1WTech 4000 AC Current Draw and Thermal Dissipation AC Power Draw and Thermal DissipationT4000 Tech 6000 AC Current Draw and Thermal Dissipation T6000Tech 8000 AC Current Draw and Thermal Dissipation T8000Advanced Features TCP/IQ and HiQnet Networks Appendix a Network BasicsTCP/IQ and HiQnet audio networks offer many advantages Network Addresses Let’s explain each identifier00-0A-40-00-DC-2F 192.168.0.1Appendix B Setting Sensitivity for Best Gain Staging Service Warranty United States & CanadaWorldwide Except USA & Canada Fax Crown Audio, IncProduct purchased from *Business/Individual Country This page Intentionally Left Blank Crown Audio Factory Service Information This page Intentionally Left Blank This page Intentionally Left Blank

I-Tech Series specifications

The Crown Audio I-Tech Series represents a pinnacle of power amplification technology, designed to meet the demanding needs of live sound reinforcement and installation applications. Renowned for their flexibility, efficiency, and sound quality, these amplifiers integrate cutting-edge features that appeal to both professional audio engineers and musicians alike.

One of the key technologies employed in the I-Tech Series is the use of DriveCore technology. This innovative design allows the amplifiers to achieve high power output while minimizing size and weight. The DriveCore technology combines the efficiency of Class D amplification with superior sound quality, yielding a lightweight solution that maintains high fidelity and low distortion even at peak volumes.

The I-Tech Series amplifiers come equipped with a comprehensive suite of digital signal processing (DSP) capabilities. Each amplifier integrates sophisticated DSP algorithms that enable advanced speaker management, including extensive equalization, delay settings, and limiting controls. This ensures optimal performance for a variety of loudspeakers and installation scenarios, allowing users to tailor the output to the specific acoustical environment.

Connectivity is another strong point for the I-Tech Series. The amplifiers often include a variety of input options, providing flexibility for different setups, whether analog or digital. The inclusion of Ethercon connectivity enables seamless integration into a networked environment, allowing for remote control and monitoring via Crown's sophisticated software interface. Users can access real-time data about the system's performance, making adjustments on-the-fly to maintain optimal sound quality.

Durability and reliability are fundamental characteristics of the Crown I-Tech amplifiers. Built to withstand the rigors of touring and the demands of permanent installations, these amplifiers are housed in rugged enclosures that dissipate heat effectively while maintaining a compact form factor. Integrated protection circuits safeguard against over-temperature, over-current, and short-circuits, ensuring longevity even under extreme conditions.

In terms of power output, the I-Tech Series features a range of models, each capable of delivering substantial wattage to drive large sound systems with authority. The efficient cooling design allows for extended use without compromising performance, making them suitable for both large concerts and smaller venues.

In summary, the Crown Audio I-Tech Series amplifiers combine advanced technologies, including DriveCore and flexible DSP, to deliver powerful and high-quality audio performance. Their robust design, comprehensive connectivity options, and tailored control make them a premier choice for audio professionals seeking reliable and effective amplification solutions.
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