I-Tech HD Series Power Amplifiers

4 Advanced Operation

Attenuator Limits: You can set the maximum attenuation from 0 dB to –100 dB. This feature allows you to set a limit on the attenuators. Once set, attenuation cannot be adjusted beyond this level. The attenuator limit appears as a line in the attenuator bar meter.

NOTE: The attenuator setting must be below the attenuator limit that you are trying to set. For example, if the attenuator is set at –3 dB, you cannot set the attenuator limit below –3 dB unless you decrease the attenuator level.

Attenuator Limits

0.0dB 0.0

Attenuator Link You can set the attenudators to be independent or linked. Turn an Encoder knob to choose one of those options, then press the knob to save your choice.

Attenuator Link

INDEPENDENT

Turn to Set-Press to Save

Input Sources: For each channel, turn the Encoder to select analog, digital, or automatic backup source. Options are:

Analog

Digital

Digital with analog backup <Digital A-Backup> Digital with analog override <Digital A-Ovride>

Digital with analog backup: The I-Tech HD is being fed a digital signal and an analog signal. The input is currently switched to the digital signal. If it fails, the I-Tech HD switches instantly to the analog signal.

Digital with analog override: The input is switched to the digital signal, and no analog signal is applied. If an analog signal is sent, the I-Tech HD switches instantly to the analog signal. If the analog signal fails, the I-Tech HD switches to the digital signal after a delay set by the Hold Time slider in the Input Section of the System Architect page.

Input Sources

<Analog> <Digital>

page 18

Analog Source Select: Turn the left Encoder knob to select Analog 1, Analog 2, or Analog 1+2 signals for Channel 1. The right Encoder does the same for Channel 2. Press the knob to confi rm your selection.

Analog 1 is Analog input Channel 1. Anolog 2 is Analog input Channel 2.

Analog 1 +2 is Analog input Channels 1 and 2.

Analog Source Select

Analog Analog

1 2

Maximum Analog Input: Turn an Encoder to select the maximum input level

to the amplifi er: +21 dBu or +15 dBu. Press the knob to confi rm your selection.

Note: Changing this value changes the range of sensitivities available to the amplifi er.

For more information see Figure 4.4 and the I-Tech Sensitivity Charts in the Appendix of the I-Tech Application Guide. It is available online at www. crownaudio.com/itech/pdf/137327.pdf.

Maximum Analog Input

+15dBu

Turn to Set-Press to Save

Digital Source Select: Turn the left Encoder knob to select the digital source

for Channel 1: AES or Cobranet. The right Encoder does the same for Channel 2. Press the knob to confi rm your choice.

Digital Source Select

AES <Cobra net>

AES Source Select: Turn the left Encoder knob to select the digital source for

Channel 1: AES1, AES2, or AES1+2. The right Encoder does the same for Channel 2. Press the knob to confi rm your choice.

AES 1 is AES input Channel 1. AES 2 is AES input Channel 2.

AES 1 +2 is AES input Channels 1 and 2.

AES Source Select

AES

AES

1

2

AES Input Trim: Turn the left Encoder knob to vary the gain of the AES digital

signal for Channel 1: -100.0 dB to +20 dB. The right Encoder does the same for Channel 2. See Figure 4.4 for more information.

AES Input Trim

0.0 dB 0.0

AES Input Status: “Lock” indicates that an AES cable is plugged in and the amplifi er is receiving (and locking to) the AES clock pulse. “No Lock” means that the amplifi er is not receiving, or is not locking to the AES clock pulse.

AES Input Status

No Lock

CobraNet Source Select: Turn the left Encoder knob to select the CobraNet

source for Channel 1: Cnet1, Cnet2, or Cnet 1+2. The right Encoder does the same for Channel 2. Press the knob to confi rm your choice.

Cnet1 is Bundle A. Cnet2 is Bundle B.

Cnet 1+2 is Bundles A+B.

Cobranet Source Select

Cnet 1

Cnet 2

CobraNet Input Trim: Turn the left Encoder knob to vary the gain of the

CobraNet digital signal for Channel 1: -100.0 dB to +20 dB. The right Encoder does the same for Channel 2. See Figure 4.4 for more information.

Cobranet Input Trim

0.0dB 0.0

Operation Manual

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Crown Audio I-T12000 HD, I-T5000 HD, IT9000 HD, I-T9000 HD operation manual Analog Analog, +15dBu
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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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