Crown Audio I-T5000 HD, IT9000 HD, I-T12000 HD, I-T9000 HD operation manual Crossover Filters

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I-Tech HD Series Power Amplifiers

4 Advanced Operation

4.8.10 Crossover Filters

The Crossover section lets you use infi nite impulse response (IIR) or fi nite impulse response (FIR) fi lters for the crossover.

FIR advantages: FIR has a longer processing latency but has less phase artifacts compared to IIR. FIR allows for brickwall, 48dB/oct and 24dB/octave fi lters.

IIR advantages: FIR has one processing block per channel; IIR has one or more. For example, you can place an FIR at only one end of a channel, but you can place an IIR at either end.

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The amplifi er contains two FIR blocks which can be used in various confi gurations:

•2x2 mode: One FIR fi lter per channel can be used.

•Bridge mono mode: Both FIR fi lters can be used.

•1x2 mode: Two modes are available – Duplicate or Unique. In Duplicate mode the same settings are used on both channels, allowing two FIR

fi lters per bandpass. In Unique mode the FIR fi lters are limited to one per bandpass. However, if the High Pass of Channel 1 and Low Pass for Channel 2 are set to identical slopes and frequencies, you can use FIR on all the bandpasses. The logic for this operation is built into the software controls. In addition, the Processing (FIR) latency sets the minimum frequency that can be set for an FIR.

A polarity inverter button lets you change the polarity of each channel independently.

Each audio channel has three separate places where fi lters can be placed in the system: input EQ (16 fi lters), Crossover, and Output EQ. Up to 24 fi lters per channel are available, plus crossover fi lters and 4 fi lters for the signal generator. Each fi lter has up to +/-24dB of gain. The following fi lters are available:

•Lowpass: Bessel 2-4, Butterworth1-4, and Linkwitz-Riley 8

•Highpass: Bessel 2-4, Butterworth1-4, and Linkwitz-Riley 8

•Lowshelf: Low-frequency shelving EQ

•Highshelf: High-frequency shelving EQ

•Lowpass EQ: Variable bandwidth, can be expressed as Q (0.100 to 35) or Octaves (0.041 to 6.672)

•Highpass EQ: Variable Q from 0.1 to 25

•Parametric EQ: Variable Q form 0.1 to 35

Operation Manual

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Contents T5000 HD T9000 HD T12000 HDSome models may be exported under the name Amcron 140811-1Important Safety Instructions Wichtige SicherheitsinstruktionenSafety Standard European Representative’s Name and AddressFamily Name I-Tech HD EMC StandardsTable of Contents T5000HD T9000HDT12000HD WelcomeSetup Unpack and Install Your AmplifierYou may also stack amps without using a cabinet Magnetic FieldConnecting to AC Mains Wire Inputs and Outputs Wiring basicsDistance Choose Input Wire and ConnectorsChoose Output Wire and Connectors Stereo Mode Wiring Important Turn off the amplifier and unplug its power cordBridge-Mono Mode DisabledStartup Procedure PrecautionsOperation Protecting Your SpeakersFront Panel Controls and Indicators Power SwitchUSB 2.0 Connector Fault IndicatorBack Panel Controls, Indicators and Connectors Fans Analog Inputs SectionOutputs Section Digital Inputs SectionPresets Advanced OperationNavigating the LCD Control Screen Introduction Menu TreeNext ExitOperation Examples 30.0 dBDB Mute 96 kHz Advanced MenuAnalog Analog +15dBuOFF dB OFF + +OFF v OFF Monitor Menu 120 VAC108.8 Hrs Alert MenuNetworking Menu Networking MenuCobranet Menu Cobranet MenuDownloadable Presets Presets IntroductionUser 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 screenDigital Audio Options AES/EBU Networking the AmplifierNetwork Troubleshooter Select Network CardAmplifier Mode Input Level, Mute, Link, Level Meters, and IndicatorsInput Signal Level Meter Clip Indicator Output Signal Level MeterInput Signal Router Digital with Analog BackupAnalog Signal Detect Threshold -100 dB to 0 dB Digital with Analog OverrideCobraNet Advanced Settings Source ConfigurationInput Signal Compressor Input Delay and Driver DelayInput EQ and Output EQ Crossover Filters Average Power Limiter LevelMax SuitePeak Voltage Limiter 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% THDCrosstalk below rated power, 20 Hz to 1 kHz Common Mode Rejection CMR 20 Hz to 1 kHzAC Line Connector DimensionsCharts Typical Frequency Response 1WTypical Damping Factor vs. Frequency AC Power Draw and Thermal Dissipation Btu/hr Kcal/hr 205 177225 767 660 57.6 91.2 99.8 392 1338 337Per 1A Line Current 212 183213 726 625 63.6 103.3 111.8 441 1504 379Advanced Features Network Addresses HiQnet NetworksHiQnet control offers many advantages IP Router 00-0A-40-00-DC-2F192.168.0.1 Closer Look at CobraNet Fast Ethernet 100Base-TAudio Specs Bundles and Audio ChannelsSwitched Networks ConductorAppendix B Setting Sensitivity for Best Gain Staging Service Warranty Items Excluded from this CROWN- Warranty Worldwide Except USA & CanadaCrown Audio, Inc FaxMishawaka Rd 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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