Crown Audio I-T12000 HD, I-T5000 HD Input Signal Compressor, Input Delay and Driver Delay

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I-Tech HD Series Power Amplifiers

4 Advanced Operation

4.8.7 Input Signal Compressor

An input signal compressor is available for each channel. Several parameters control this feature:

On/off button: Enables or disables this function.

Threshold: Sets the level, in dBu, above which the compressor begins to attenuate the input signal. This level corresponds to the input level meter reading. The compressor is “feed- forward,” meaning that the level detection point is located before the gain control stage. The range is from +20 dBu to – 50 dBu.

Attack Time: Sets the attack time of the compressor. The attack time is defi ned as the time it takes the compressor to attenuate the signal gain by 20 dB. The range is from 1 millisecond to 0.1 second.

Release Time: Sets the release time of the compressor. The release time is defi ned as the time it takes the compressor to increase the signal gain by 20 dB. The range is from 10 milliseconds to 10 seconds.

Compression Ratio: Sets the compression ratio of the compressor. The ratio is the relation between the amount of attenuation applied by the compressor verses the amount that the input signal is over the threshold. The available settings are 2:1 to 32:1.

Makeup gain: The amount of gain you want to apply to the compressed signal to raise it to a higher level.

Knee width: The knee of the compression curve is the transition point between no compression and compression. The wider the knee, the more gradual is the transition -- so compression is not so obvious when the signal is close to threshold.

Beyond the controls for each channel, a single-control Compressor Tie connects the compressors together. The compressors are tied at their sense points, meaning that the greater of the two input signals will be used as stimulus for both compressors. Each compressor will still compress based on its individual threshold, attack, release and ratio settings.

4.8.8Input Delay and Driver Delay

In these screens you can set the signal delay for each channel in seconds, feet or meters.

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Operation Manual

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Contents Some models may be exported under the name Amcron T5000 HDT9000 HD T12000 HD 140811-1Important Safety Instructions Wichtige SicherheitsinstruktionenFamily Name I-Tech HD Safety StandardEuropean Representative’s Name and Address EMC StandardsTable of Contents T12000HD T5000HDT9000HD WelcomeYou may also stack amps without using a cabinet SetupUnpack and Install Your Amplifier Magnetic FieldConnecting to AC Mains Wire Inputs and Outputs Wiring basicsChoose Input Wire and Connectors Choose Output Wire and ConnectorsDistance Stereo Mode Wiring Important Turn off the amplifier and unplug its power cordBridge-Mono Mode DisabledOperation Startup ProcedurePrecautions Protecting Your SpeakersUSB 2.0 Connector Front Panel Controls and IndicatorsPower Switch Fault IndicatorOutputs Section Back Panel Controls, Indicators and Connectors FansAnalog Inputs Section Digital Inputs SectionPresets Advanced OperationNext Navigating the LCD Control Screen IntroductionMenu Tree Exit30.0 dB DB MuteOperation Examples 96 kHz Advanced MenuAnalog Analog +15dBu+ + OFF v OFFOFF dB OFF 108.8 Hrs Monitor Menu120 VAC Alert MenuNetworking Menu Networking MenuCobranet Menu Cobranet MenuPresets Introduction User PresetsDownloadable Presets How to transfer a file from a USB flash drive to the amplifier File Transfer Via the USB PortList of Pop-Up Boxes and Descriptions These messages may appear on the LCD screenNetwork Troubleshooter Digital Audio Options AES/EBUNetworking the Amplifier Select Network CardInput Signal Level Meter Amplifier ModeInput Level, Mute, Link, Level Meters, and Indicators Clip Indicator Output Signal Level MeterAnalog Signal Detect Threshold -100 dB to 0 dB Input Signal RouterDigital with Analog Backup Digital with Analog OverrideCobraNet Advanced Settings Source ConfigurationInput Signal Compressor Input Delay and Driver DelayInput EQ and Output EQ Crossover Filters Peak Voltage Limiter Average Power LimiterLevelMax Suite Transducer Thermal LimitingOn Enables or disables the load-supervision function Continuous Load MonitoringADC DSP DAC Preset Manager Signal Generator Sine On/Off Turns the sine-wave generator on or offFixed-Gain Mode in the I-Tech HD AES input Limiters Amplifier Cobranet input trimTroubleshooting Amplifi er’s power switch is offSpeakers not connected Open circuit due to speaker failure Ethernet link is brokenSpecifications Hz 20 kHz with 0.35% THDAC Line Connector Crosstalk below rated power, 20 Hz to 1 kHzCommon Mode Rejection CMR 20 Hz to 1 kHz DimensionsCharts Typical Frequency Response 1WTypical Damping Factor vs. Frequency AC Power Draw and Thermal Dissipation 225 767 660 Btu/hr Kcal/hr205 177 57.6 91.2 99.8 392 1338 337213 726 625 Per 1A Line Current212 183 63.6 103.3 111.8 441 1504 379Advanced Features HiQnet Networks HiQnet control offers many advantagesNetwork Addresses 00-0A-40-00-DC-2F 192.168.0.1IP Router Audio Specs Closer Look at CobraNetFast Ethernet 100Base-T Bundles and Audio ChannelsSwitched Networks ConductorAppendix B Setting Sensitivity for Best Gain Staging Service Warranty Items Excluded from this CROWN- Warranty Worldwide Except USA & CanadaMishawaka Rd Crown Audio, IncFax Purchase DateThis 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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