I-Tech HD Series Power Amplifiers

9 Appendix A: Network and CobraNet Basics

9.1 HiQnet Networks

Background: A Local Area Network (LAN) is a group of computers in a venue that share data, either through cables or via wireless transmission. Ethernet is a popular LAN communication protocol for PCs. An audio network is a Local Area Network made of audio devices and one or more computers. A subnet is a small network within a larger network. For example, an audio network might have two subnets: one for entertainment audio, and one for paging.

One use of an audio network is to control and monitor power amplifi ers on stage from a computer at Front-of-House. You can set amplifi er levels, adjust crossovers, measure speaker impedance, check for overheating and clipping, all from the house mixing console.

You need a way to send computer commands to several audio devices at once. This is done with an Ethernet switch, which is something like an audio Y cable or distribution amp. The computer, and all the audio devices, connect to the switch as in Figure 9.1.

HiQnet protocol lets you control and monitor certain Harman products (including Crown) on an Ethernet network. Figure 9.1 shows a typical HiQnet network.

HiQnet control offers many advantages:

•Use of “off-the-shelf” network hardware. HiQnet uses standard hardware commonly used in the computer industry, making it both low-cost and readily available.

•Better Performance. Meters display faster in realtime because the network is wide bandwidth.

HiQnet provides these functions:

•Quickly fi nd all HiQnet components connected to the network.

•Synchronize multiple control points on a network.

•Control and monitor components on different Local Area Networks (LANs) through the use of an IP router (explained later).

•Upgrade fi rmware via the network.

Network Addresses

Each component in a HiQnet network has three addresses to identify it:

•Media Access Control (MAC) Address

•Internet Protocol (IP) Address

•HiQnet Address

Let’s explain each identifi er.

Computer

Laptop

I-T5000HD

I-T5000HD

I-T9000HD

I-T9000HD

I-T12000HD

100Mb Switch

Figure 9.1 A HiQnet Network

Operation Manual

page 49

Page 48 Page 50
Page 49
Image 49
Crown Audio IT9000 HD, I-T5000 HD, I-T12000 HD HiQnet Networks, HiQnet control offers many advantages, Network Addresses
Page 48 Page 50

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.
Top Page Image Contents