Crown Audio CDI1000

Amplification Designed for Contractors: the CDI Series and Its Product Logic

The CDI amplifiers (Contractor Digital Intelligence) were developed to meet the demands of installed sound systems: simple wiring, stability in continuous operation, and easily accessible adjustment tools. The series comes in several models with identical chassis and features, the main difference being the available power. This approach allows standardizing an installation (same adjustment habits, same connection methods) while adapting the power reserve to the areas to be amplified.

Who Is This CDI Amplifier For and In Which Applications Does It Excel?

This CDI model is primarily aimed at integrators, installation contractors, and site managers looking for a 2-channel power amplifier capable of driving both low impedance systems and 70V/140V line networks. It is particularly suitable for venues requiring reliable and uniform sound distribution: multipurpose rooms, commercial spaces, public venues, multiroom zones, or installations managing several types of speakers.

Thanks to its onboard DSP and presets, it facilitates commissioning and ensures consistent sound quality from site to site, while delivering a reproduction described as precise and transparent (low distortion). The 2U rack format and moderate weight also make it a pragmatic choice when optimizing space in technical racks.

DSP, Control, and Protections: A Complete Platform for Installation

Built-in DSP with Front Panel Controls

The CDI integrates a DSP with a control panel and LCD display on the front. Speaker programs allow saving and recalling essential installed sound settings: crossover frequencies, frequency correction, limiting, compression, delay, and subharmonic generation. The goal: save time during installation, protect loudspeakers, and maintain a consistent sonic signature during maintenance interventions.

Integration Connectivity: Terminal Blocks and Rack Logic

To meet clean and durable wiring requirements, inputs are provided via Phoenix / Euroblock terminal blocks, while outputs use a terminal block suitable for low impedance or 70V/140V line operation. This connector choice is especially appreciated in fixed installations for mechanical robustness, identification, and ease of maintenance.

A USB connector is also available for control via the HiQnet Audio Architect(TM) software, convenient for centralizing configuration and monitoring of an amplifier fleet from a supervision workstation.

Switch-Mode Power Supply, Speed-Controlled Ventilation, and Advanced Protections

The amplifier features a switch-mode power supply and speed-controlled ventilation to optimize cooling according to load and usage conditions. Operating indicators facilitate quick status reading of the device in the rack.

For safety, the design incorporates advanced protections against: output short circuit, open circuits, DC current, impedance mismatch, general overheating, high-frequency saturation, and internal amplifier malfunctions. This comprehensive set is essential to ensure reliable continuous operation and minimize service interruptions.

Technical specifications

2 ohm modulation	2 x 700 W*	Maximum power in Watts at specified total harmonic distortion	1 kHz, 0.5% THD, *1 kHz, 1% THD
4 ohm modulation	2 x 500 W	Rack units	2U
8 ohm modulation	2 x 275 W	Weight	8.6 kg
70V modulation	2 x 500 W	Dimensions	48.3 x 31.1 x 8.9 cm
4 ohm bridged modulation	1400 W*	Advanced protection systems against	output short circuit, open circuits, DC current, impedance mismatch, general overheating, high-frequency saturation, internal amplifier malfunctions
8 ohm bridged modulation	1000 W