Crown Audio I-T9000 HD Operation, Protecting Your Speakers, Startup Procedure, Precautions

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I-Tech HD Series Power Amplifiers

3Operation

3.1Protecting Your Speakers

It’s wise to avoid clipping the amplifi er signal. Not only does clipping sound bad, it can damage high-frequency drivers. To prevent clipping, use System Architect software’s Level Max suite to enable or display the peak voltage limiter and average power limiter in your amplifi er’s built-in DSP. That way, no matter how strong a signal your mixer produces, the amplifi er output will not clip. Set the limiter threshold so that mixer signals above 0 dB or 0 VU on the mixer meters do not quite drive the amplifi er into clipping.

Also, avoid sending strong subsonic signals to the amplifi er. High- level, low-frequency signals from breath pops or dropped micro- phones can blow out drivers. To prevent subsonic signals, use one of these methods:

•Insert a highpass fi lter between mixer output and amplifi er input (or between mixer and limiter).

•Use the I-Tech’s onboard DSP to set up a highpass fi lters.

•Switch in highpass fi lters at your mixer. Set the fi lter to as high a frequency as possible that does not affect your program. For example, try 35 Hz for music and 75 Hz for speech. On each mixer input channel, set the fi lter frequency just below the lowest fundamental frequency of that channel’s instrument.

3.2 Startup Procedure

When fi rst turning on your amplifi er, follow the procedures in the Quick-Start Guide on page 4 (stereo) or page 5 (bridge-mono).

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.

3.3 Precautions

Your amplifi er is protected from internal and external faults, but you should still take the following precautions for optimum performance and safety:

1.Before use, your amplifi er fi rst must be confi gured for proper operation, including input and output wiring hookup. Improper wiring can result in serious operating diffi culties. For information on wiring and confi guration, please consult the Setup section of this manual or, for advanced setup techniques, consult Crown’s Amplifier Application Guide available online at www.crownaudio.com.

2.Use care when making connections, selecting signal sources and controlling the output level. The load you save may be your own!

3.Do not short the ground lead of an output cable to the input signal ground. This may form a ground loop and cause oscillations.

4.WARNING: Never connect the output to a power supply, battery or power main. Electrical shock may result.

5.Tampering with the circuitry, or making unauthorized circuit changes may be hazardous and invalidates all agency listings.

6.Do not operate the amplifi er with the red Clip LEDs constantly fl ashing.

7.Do not overdrive the mixer, which will cause clipped signal to be sent to the amplifi er. Such signals will be reproduced with extreme accuracy, and loudspeaker damage may result.

8.Do not operate the amplifi er with less than the rated load impedance. Due to the amplifi er’s output protection, such a confi guration may result in premature clipping and speaker damage.

9.CAUTION – SHOCK HAZARD: Potentially lethal voltages exist at the output connectors when the amplifier is turned on and is passing a signal.

Remember: Crown is not liable for damage that results from overdriving other system components.

Operation Manual

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Contents 140811-1 T5000 HDT9000 HD T12000 HD Some models may be exported under the name AmcronWichtige Sicherheitsinstruktionen Important Safety InstructionsEMC Standards Safety StandardEuropean Representative’s Name and Address Family Name I-Tech HDTable of Contents Welcome T5000HDT9000HD T12000HDMagnetic Field SetupUnpack and Install Your Amplifier You may also stack amps without using a cabinetWire Inputs and Outputs Wiring basics Connecting to AC MainsDistance Choose Input Wire and ConnectorsChoose Output Wire and Connectors Important Turn off the amplifier and unplug its power cord Stereo Mode WiringDisabled Bridge-Mono ModeProtecting Your Speakers Startup ProcedurePrecautions OperationFault Indicator Front Panel Controls and IndicatorsPower Switch USB 2.0 ConnectorDigital Inputs Section Back Panel Controls, Indicators and Connectors FansAnalog Inputs Section Outputs SectionAdvanced Operation PresetsExit Navigating the LCD Control Screen IntroductionMenu Tree NextOperation Examples 30.0 dBDB Mute Advanced Menu 96 kHz+15dBu Analog AnalogOFF dB OFF + +OFF v OFF Alert Menu Monitor Menu120 VAC 108.8 HrsNetworking Menu Networking MenuCobranet Menu Cobranet MenuDownloadable Presets Presets IntroductionUser Presets File Transfer Via the USB Port How to transfer a file from a USB flash drive to the amplifierThese messages may appear on the LCD screen List of Pop-Up Boxes and DescriptionsSelect Network Card Digital Audio Options AES/EBUNetworking the Amplifier Network TroubleshooterClip Indicator Output Signal Level Meter Amplifier ModeInput Level, Mute, Link, Level Meters, and Indicators Input Signal Level MeterDigital with Analog Override Input Signal RouterDigital with Analog Backup Analog Signal Detect Threshold -100 dB to 0 dBSource Configuration CobraNet Advanced SettingsInput Delay and Driver Delay Input Signal CompressorInput EQ and Output EQ Crossover Filters Transducer Thermal Limiting Average Power LimiterLevelMax Suite Peak Voltage LimiterContinuous Load Monitoring On Enables or disables the load-supervision functionADC DSP DAC Preset Manager Sine On/Off Turns the sine-wave generator on or off Signal GeneratorAES input Limiters Amplifier Cobranet input trim Fixed-Gain Mode in the I-Tech HDAmplifi er’s power switch is off TroubleshootingEthernet link is broken Speakers not connected Open circuit due to speaker failureHz 20 kHz with 0.35% THD SpecificationsDimensions Crosstalk below rated power, 20 Hz to 1 kHzCommon Mode Rejection CMR 20 Hz to 1 kHz AC Line ConnectorTypical Frequency Response 1W ChartsTypical Damping Factor vs. Frequency AC Power Draw and Thermal Dissipation 57.6 91.2 99.8 392 1338 337 Btu/hr Kcal/hr205 177 225 767 66063.6 103.3 111.8 441 1504 379 Per 1A Line Current212 183 213 726 625Advanced Features Network Addresses HiQnet NetworksHiQnet control offers many advantages IP Router 00-0A-40-00-DC-2F192.168.0.1 Bundles and Audio Channels Closer Look at CobraNetFast Ethernet 100Base-T Audio SpecsConductor Switched NetworksAppendix B Setting Sensitivity for Best Gain Staging Service Warranty Worldwide Except USA & Canada Items Excluded from this CROWN- WarrantyPurchase Date Crown Audio, IncFax Mishawaka RdThis page Intentionally Left Blank Crown Audio Factory Service Information

I-T9000 HD, I-T12000 HD, IT9000 HD, I-T5000 HD specifications

Crown Audio has established itself as a leader in the audio amplification industry, and its IT series, including the IT9000 HD, I-T9000 HD, I-T5000 HD, and I-T12000 HD, exemplifies this commitment to quality and innovation. These amplifiers are engineered to deliver exceptional audio performance, reliability, and user-friendly operation, making them ideal for a variety of applications, from concert sound to installed audio systems.

The IT9000 HD is a powerhouse that provides robust performance through its high-efficiency design. Featuring advanced Class I technology, it can deliver a staggering output of up to 9000 watts. This model is built with a lightweight, compact chassis that allows for easy installation and portability. The IT9000 HD incorporates Crown’s proprietary DriveCore technology, which combines the amplifier’s driver and output stage into a single chip, significantly increasing efficiency and reducing the overall size of the amplifier.

Next in line, the I-T9000 HD offers similar power output capabilities but adds flexibility with its network connectivity options. This model supports the latest in digital signal processing, allowing users to tailor their audio system with precision. It also features intelligent fan cooling technology that adjusts the fan speed based on heat generation, ensuring optimal performance under varying load conditions.

The I-T5000 HD stands out with its unique ability to deliver a maximum of 5000 watts, making it an ideal choice for smaller venues or mobile applications where power-to-weight ratio is critical. It shares many of the technological advancements of its larger counterparts, including enhanced DSP capabilities and comprehensive monitoring via onboard indicators and remote software control.

Lastly, the I-T12000 HD is the flagship model in this series, capable of an impressive 12000 watts output. It boasts advanced power management features and offers multiple operating modes, including stereo and bridged operation. The I-T12000 HD is designed for the most demanding applications, ensuring ultra-reliable performance and pristine sound quality in even the largest spaces.

All models in the Crown IT series feature a rugged construction for durability, along with intuitive front-panel controls for easy operation. They also include comprehensive network control options, allowing users to manage and monitor their systems remotely via DSI (Digital Signal Interface) and DSP capabilities.

In conclusion, Crown Audio's IT9000 HD, I-T9000 HD, I-T5000 HD, and I-T12000 HD amplifiers represent the pinnacle of amplifier technology, delivering unmatched performance, efficiency, and versatility for a wide range of audio applications. Whether for live events or permanent installations, these amplifiers provide the power and reliability necessary to meet the demands of modern audio environments.
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