I-Tech HD Series Power Amplifiers

8 Advanced Features

8.1 Protection Systems

Your Crown amplifi er provides extensive protection and diagnostic capabilities, including thermal level control, fault indicators, high-pass fi ltering, DC protect, AC under/over voltage protection, inrush limiting, and variable-speed fans with tachometer feedback. Microprocessor monitors fans, and signals an error via System Architect if fans are not operating.

8.1.1 Thermal Level Control (TLC)

If the amplifi er becomes too hot for safe operation, the TLC will engage the input compressor and the clip LED will illuminate. By compressing the input, the amplifi er will not generate as much heat and will have a chance to cool down. The degree of compression is proportional to the amount of overheating. This feature allows the show to go on, rather than having the amplifi er shut down, and only occurs in extreme situations.

8.1.2 Circuit Breaker

If the current draw of the amplifi er exceeds safe limits, this breaker automatically disconnects the power supply from the AC mains.

8.2Global Switching Power Supply with PFC

Thanks to its global power supply, the I-Tech amplifi er works anywhere in the world. There’s no need to reset an AC mains voltage switch, and no need to order a special model. The amp will work and meet all specs on 100V - 240VAC, 50/60 Hz.

Crown’s Switching Power Supply minimizes the amplifi er’s weight.

Typical non-switching power supplies require large, heavy transformers in order to produce the required power at the output stage. These transformers must be large to operate at 50 to 60 Hz (standard AC supplied by the power company).

By contrast, switching power supplies can oper- ate with a much smaller (and lighter) transformer because they fi rst convert the AC up to a much higher frequency, thereby reducing waste.

Power Factor Correction (PFC) controls how your amplifi er draws current from the AC mains. Instead of drawing high-magnitude current spikes that reduce the capacity of your power

distro (and couple noise into other system components), PFC draws a smooth and quiet current waveform that is in phase with the mains voltage waveform. PFC allows you to reduce the size and weight of your power distribution and improve the performance of your signal processors.

8.3 3rd Generation Class I Circuitry

Class I (BCA, Balanced Current Amplifi er) Interleave technology allows high levels of power output without all the associated heat found in a conventional amplifi er. This highly effi cient design also provides accurate, uncolored sound with very low distortion and a high damping factor for tight, clean bass response. And it can deliver more power to reactive loads than conventional dissipative designs (comfortably driving the latest high- technology transducers). Class I also reduces current draw of the AC mains, providing energy conservation.

8.4 Color-Coded Rear Overlay

The labels on the rear panel are color coded to group similar functions under common colors.

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Operation Manual

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Crown Audio I-T5000 HD, IT9000 HD, I-T12000 HD, I-T9000 HD operation manual Advanced Features
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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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